Tài liệu Tiếng Anh B1 :Heart Failure / Đại học y dược Huế

Tài liệu Tiếng Anh B1 :Heart Failure / Đại học y dược Huế chi tiết giúp bạn ôn luyện, học tốt môn học và đạt điểm cao.

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ESC HEART FAILURE ORIGINAL ARTICLE
ESC Heart Failure 2021; 8: 48524862
Published online 30 October 2021 in Wiley Online Library (wileyonlinelibrary.com) DOI: 10.1002/ehf2.13677
The benefits of sacubitrilvalsartan in patients with
acute myocardial infarction: a systematic review and
meta-analysis
Bo Xiong
1
, Dan Nie
2
, Jun Qian
1
, Yuanqing Yao
1
, Gang Yang
1
, Shunkang Rong
1
, Que Zhu
1
, Yun Du
1
, Yonghong
Jiang
1
and Jing Huang
1
*
1
Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 4 00010, China; and
2
Department of
Gastroenterology, The Chongqing Traditional Chinese Medicine Hospital, Chongqing Academy of Traditional Chinese Medicine, Chongqing, China
Abstract
Aims We aimed to investigate whether sacubitrilvalsartan could further improve the prognosis, cardiac function, and left
ventricular (LV) remodelling in patients following acute myocardial infarction (AMI).
Methods and results We searched the PubMed, Embase, Cochrane Library, and China National Knowledge Infrastructure (CNKI)
from inception to 10 May 2021 to identify potential articles. Randomized controlled trials (RCTs) meeting the inclusion criteria
were included and analysed. Thirteen RCTs, covering 1358 patients, were analysed. Compared with angiotensin-converting
enzyme inhibitors (ACEI)/angiotensin receptor blockers (ARB), sacubitrilvalsartan did not significantly reduced the
cardiovascular mortality [risk ratio (RR) 0.65, 95% confidence interval (CI) 0.22 to 1.93, P = 0.434] and the rate of myocardial
reinfarction (RR 0.65, 95% CI 0.29 to 1.46, P = 0.295) of patients following AMI, but the rate of hospitalization for heart failure
(HF) (RR 0.48, 95% CI 0.35 to 0.66, P < 0.001) and the change of LV ejection fraction (LVEF) [weighted mean difference (WMD)
5.49, 95% CI 3.62 to 7.36, P < 0.001] were obviously improved. The N-terminal pro-brain natriuretic peptide (NT-ProBNP) level
(WMD 310.23, 95% CI 385.89 to 234.57, P < 0.001) and the LV end-diastolic dimension (LVEDD) (WMD 3.16, 95% CI 4.59 to
1.73, P < 0.001) were also significantly lower in sacubitrilvalsartan group than in ACEI/ARB group. Regarding safety, sacubitril
valsartan did not increase the risk of hypotension, hyperkalaemia, angioedema, and cough.
Conclusions This meta-analysis suggests that early administration of sacubitrilvalsartan may be superior to conventional
ACEI/ARB to decrease the risk of hospitalization for HF, improve the cardiac function, and reverse the LV remodelling in patients
following AMI.
Keywords Sacubitrilvalsartan; Angiotensin-converting enzyme inhibitors; Angiotensin receptor blockers; Heart failure; Acute
myocardial infarction; Meta-analysis
Received: 24 June 2021; Revised: 29 August 2021; Accepted: 5 October 2021
*Correspondence to: Jing Huang, MD, FACC, Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing
400010, China. Tel: +8618883909081; Fax: 0086-023-63693702. Email: huangjingcqmu@126.com
These authors are equal contributors.
Introduction
Acute myocardial infarction (AMI) is a common and severe
type of coronary heart disease with high morbidity and
mortality. Although primary percutaneous coronary
intervention (pPCI) has been widely performed in patients
with AMI
to reduce infarct size and preserve ventricular function,
almost 25% AMI patients would develop into heart failure
(HF).
1
Substantial evidences indicated that β blockers,
2
angiotensin-converting enzyme inhibitors (ACEI)/angiotensin
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receptor blockers (ARB),
3,4
and mineralocorticoid-receptor
antagonists (MRA)
5
could effectively attenuate the left
ventricular (LV) remodelling and reduce the risk of death of
AMI patients. However, their risk of re-hospitalization for HF
and mortality remain high.
6
Neuroendocrine hormones activation including the renin
angiotensin aldosterone system (RASS) and sympathetic
nervous system (SNS) play an important role in the
progression of LV remodelling and HF occurrence after AMI.
7,8
Therefore, besides timely revascularization, regulating
neuroendocrine hormone balance is another pivotal way to
improving their prognosis. In addition to blocking the RASS,
sacubitril valsartan is also focused on inhibiting the activity
of neprilysin and decreasing the degradation of natriuretic
peptides to further counteract the adverse effects of RASS and
SNS activation by promoting vasodilation, natriuresis, and
diuresis, along with inhibiting myocardial fibrosis and
hypertrophy.
9,10
Recently, several clinical trials compared the benefits of
sacubitrilvalsartan and ACEI/ARB in patients following AMI
and identified that sacubitrilvalsartan could further improve
the LV ejection fraction (LVEF) and significantly reduce the
major adverse cardiac events (MACE), HF re-hospitalization
risk, as well as LV dimensions.
6,11,12
However, Docherty et al.
13
found that in comparison with valsartan, sacubitrilvalsartan
neither effectively improved the LVEF nor significantly
reduced the N-terminal pro-brain natriuretic peptide (NT-
ProBNP) level, LV volume, and LV mass index in this kind of
patients. Hence, compared with ACEI/ARB, the benefits of
sacubitrilvalsartan in patients following AMI are still
controversial. For this purpose, we performed a meta-analysis
to investigate whether sacubitrilvalsartan could bring more
clinical benefits for patients following AMI than ACEI/ARB
drugs.
Methods
This meta-analysis was performed according to the Preferred
Reporting Items for Systematic Reviews and Meta-Analyses
(PRISMA) guidelines.
14
Search strategy and study selection
Literatures were searched in PubMed, Embase, Cochrane
Library, and China National Knowledge Infrastructure (CNKI)
without any restrictions from inception to 10 May 2021. The
search strategy included the following MeSH headings or
keywords: angiotensin-receptor neprilysin inhibitor,
sacubitrilvalsartan, LCZ696, MI, and AMI (Supporting
Information, Table S1). Moreover, we manually checked the
reference list of retrieved articles to identify the potentially
relevant studies. Studies were included if they met the
following criteria: (i) randomized controlled trials (RCTs); (ii)
adult (age > 18 years) patients following AMI were treated
with sacubitrilvalsartan vs. ACEI/ARB; and (iii) studies
reported the primary or secondary outcomes.
Data extraction and quality assessment
Data extraction was performed by two independent
reviewers with discrepancies resolved by discussion. The
following data were extracted from each included study: basic
characteristics of studies (authors, publication year, journal,
country, study design), characteristics of patients (sample
size, gender, age, type of MI, time of pPCI, LVEF, medical
history), sacubitrilvalsartan and ACEI/ARB treatments (initial
time, dosage, frequency, duration, mean follow-up time),
primary outcomes (cardiovascular mortality, rate of
myocardial reinfarction, rate of hospitalization for HF), and
secondary outcomes [NT-ProBNP level, change of LVEF,
change of 6 min walk test (6MWT) distance, change of left
ventricular end-diastolic dimension (LVEDD), and incidence of
side effects including hypotension, hyperkalaemia,
angioedema, and cough]. The risk of bias of included studies
was evaluated by RoB2 tool from
Cochrane.
15
Statistical analysis
Statistical methods according to our previous study were used
with STATA 14.0 (Stata Corp, College Station, Texas).
16
Heterogeneity was evaluated using I
2
test (040%: not
important; 3060%: moderate heterogeneity; 5090%:
substantial heterogeneity; 75100%: considerable
heterogeneity). Risk ratio (RR) and 95% confidence interval
(CI) were calculated for cardiovascular mortality, rate of
myocardial reinfarction, rate of hospitalization for HF, and
incidence of side effects with fixed effect model, if there was
no significant heterogeneity. Otherwise, a random effect
model was used. Weighted mean difference (WMD) and 95%
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CI were calculated for NT-ProBNP level, and changes of LVEF,
6MWT distance, as well as LVEDD with fixed effect model,
when there was no significant heterogeneity. Otherwise, a
random effect model was used. In addition, sensitivity
analysis, funnel plots, and Eggers test were used to assess the
stability of estimates and the publication bias, respectively.
The P value < 0.05 is considered significant.
Results
Study characteristics
The literature research and selection are shown in Figure 1. A
total of 234 articles were acquired. A total of 212 articles were
excluded by title and abstract screening and 22 articles were
involved in full text evaluation. Seven articles were excluded
for duplication, cohort study, or not reporting associated
outcomes and 13 RCTs were finally included in
our meta-analysis.
6,1113,1725
The baseline characteristics of
included RCTs are summarized in Table 1. Generally, the 13
Figure 1 Study selection. CNKI, China National Knowledge Infrastructure; RCT, randomized controlled trial.
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RCTs with a total of 1358 patients were published between
2019 and 2021. The baseline characteristics, such as sample
size, mean age, and sex ratio of each study, were not
significantly different between the two groups. The mean
follow-up duration ranged from 1 to 13 months. The risk of
bias analysis indicated that one study was high risk, six studies
were some concerns, and six studies were low risk (Figure S1).
Primary outcomes
Three studies with a total of 424 patients reported the
cardiovascular mortality. No significant heterogeneity was
found (I
2
= 0%) and fixed effect model was used. In
comparison with ACEI/ARB, the cardiovascular mortality was
not significantly improved by sacubitrilvalsartan in AMI
patients (RR 0.65, 95% CI 0.22 to 1.93, P = 0.434; Figure 2). In
addition, the rates of myocardial reinfarction (I
2
= 0%) and
hospitalization for HF (I
2
= 0%) were investigated in 5 RCTs
including 469 and 660 patients, respectively, without
significant heterogeneity. The results indicated that
compared with ACEI/ARB, sacubitrilvalsartan did not
significantly lower the rate of myocardial reinfarction (RR
0.65, 95% CI 0.29 to 1.46,
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Figure 2 Risks of cardiovascular mortality, myocardial reinfarction, and hospitalization for HF with sacubitrilvalsartan vs. angiotensin-converting
enzyme inhibitors/angiotensin receptor blockers. CI, confidence interval; HF, heart failure; RR, risk ratio.
P = 0.295; Figure 2); the rate of hospitalization for HF (RR 0.48,
95% CI 0.35 to 0.66, P < 0.001; Figure 2) was obviously lower
in sacubitrilvalsartan group than in ACEI/ARB group. In
addition, subgroup analysis suggested that sacubitril
valsartan was superior to both ACEI and ARB for decreasing
the rate of hospitalization for HF (Figure S2).
Secondary outcomes
Eleven studies with 1001 patients compared the NT-ProBNP
level at the time of last visit between the two groups. There
was considerable heterogeneity (I
2
= 96.7%) and random
effect model was used for analysis. The NT-ProBNP level was
significantly lower in sacubitrilvalsartan group than in
ACEI/ARB group (WMD 310.23, 95% CI 385.89 to
234.57, P < 0.001; Figure 3), and this effect was always
observed in the subgroup analysis of ACEI and ARB (Figure S3).
Moreover, the improvement of 6MWT distance was
evaluated in 3 studies including 288 patients with
considerable heterogeneity (I
2
= 99.8%). Compared with
ACEI/ARB, sacubitrilvalsartan was inclined to effectively
improve the 6MWT distance in patients following AMI, but no
significant difference was observed (WMD 73.44, 95% CI
25.81 to 172.69, P = 0.147; Figure 4).
There were 11 RCTs with 1043 patients and 7 RCTs with 636
patients reported the changes of LVEF and LVEDD,
respectively. Both of them had considerable heterogeneity
(LVEF: I
2
= 99.8%; LVEF: I
2
= 99.6%) and random effect model
was used. Our results showed that sacubitrilvalsartan
significantly increased the LVEF (WMD 5.49, 95% CI 3.62 to
7.36, P < 0.001; Figure 5) and reversed the LVEDD (WMD
3.16,
95% CI 4.59 to 1.73, P < 0.001; Figure 6). Subgroup analysis
indicated that either compared with ACEI or ARB, sacubitril
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valsartan could invariably improve the LVEF (Figure S4) and
LVEDD (Figure S5).
With regard to the safety, we analysed the most common
side effects of sacubitrilvalsartan and ACEI/ARB including
hypotension (5 RCTs with 439 patients), hyperkalaemia (4
RCTs with 378 patients), angioedema (2 RCTs with 148
patients), and cough (2 RCTs with 198 patients). Except
hypotension with moderate heterogeneity, none of them had
Figure 3 N-terminal pro-brain natriuretic peptide with sacubitrilvalsartan vs. angiotensin-converting enzyme inhibitors/angiotensin receptor blockers.
CI, confidence interval; WMD, weighted mean difference.
Figure 4 The change of 6 min walk test distance with sacubitrilvalsartan vs. angiotensin-converting enzyme inhibitors/angiotensin receptor blockers.
CI, confidence interval; WMD, weighted mean difference.
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significant heterogeneity and fixed effect model was used.
The incidences of hypotension (RR 1.24, 95% CI 0.74
to 2.08, P = 0.421; Figure S6), hyperkalaemia (RR 0.85, 95% CI
0.28 to 2.62, P = 0.783; Figure S6), angioedema (RR 0.67, 95%
CI 0.12 to 3.85, P = 0.650; Figure S6), and cough (RR 0.60, 95%
CI 0.15 to 2.41, P = 0.468; Figure S6) were all similar between
sacubitrilvalsartan and ACEI/ARB groups.
Figure 5 The change of left ventricular ejection fraction with sacubitrilvalsartan vs. angiotensin-converting enzyme inhibitors/angiotensin receptor
blockers. CI, confidence interval; WMD, weighted mean difference.
Figure 6 The change of left ventricular end-diastolic dimension with sacubitrilvalsartan vs. angiotensin-converting enzyme inhibitors/angiotensin
receptor blockers. CI, confidence interval; WMD, weighted mean difference.
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Publication bias and sensitivity analysis
We evaluated the publication bias of the rate of myocardial
reinfarction, the rate of hospitalization for HF, the NT-ProBNP,
the change of LVEF, the change of LVEDD, and the incidence
of hypotension. The funnel plots of all were not symmetric
(Figure S7), but Eggers test indicated that publication bias
was only observed in the NT-ProBNP (P = 0.009) and there
were no significant publication bias in the rate of
hospitalization for HF (P = 0.211), the change of LVEF (P =
0.232), the change of LVEDD (P = 0.132), and the incidence of
hypotension (P = 0.749). To test the stability of our results, we
performed sensitivity analyses for all outcomes and the
results indicated that all estimates were stable (Table S2).
Discussion
Our meta-analysis demonstrated that compared with
conventional ACEI/ARB, early administration of sacubitril
valsartan neither significantly improved the cardiovascular
mortality and the rate of myocardial reinfarction nor
increased the 6MWT distance in patients following AMI. But
it was able to reduce the rate of hospitalization for HF and NT-
ProBNP level, improve the LVEF, and alleviate the LV
remodelling. Moreover, the risk of side effects, including
hypotension, hyperkalaemia, angioedema, and cough, was
similar between sacubitrilvalsartan and ACEI/ARB groups.
Substantial myocardial cells necrosis could decrease
myocardial contractility and cardiac output, and
compensatory activate several neurohormone pathways
including RASS and SNS, which is beneficial to maintain
haemodynamic stability in the short term.
6,26
However, RASS
and SNS long-term activation could increase cardiac volume
and pressure loads, enhance myocardial oxygen consumption,
facilitate cardiomyocyte hypertrophy, and finally result in LV
remodelling. On the contrary, the natriuretic peptide system,
as an important compensation pathway for HF, not only had
vasodilatory and diuretic effects but also could suppress the
RASS and SNS to facilitate myocardial relaxation and reverse
cardiac remodelling.
27
Therefore, suppressing the RAAS and
SNS pathways, and augmenting the natriuretic peptide
system, may be a promising strategy for the management of
patients following AMI, especially, in patients with LV
dysfunction or at high risk of developing HF.
Similar with ACEI/ARB, which is able to inhibit RASS,
sacubitrilvalsartan is also to suppress neprilysin to prevent
the degradation of ANP and BNP and elevate the activity of
natriuretic peptide system. Several studies have proved that
sacubitrilvalsartan was a more effective alternative than
ACEI/ARB to improve the clinical outcomes of HF with reduced
ejection fraction (HFrEF).
28,29
But whether early administration
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of sacubitrilvalsartan in patients following AMI could bring
more benefits is still unclear. In accordance with most
included RCTs, our meta-analysis found that in comparison
with ACEI/ARB, sacubitrilvalsartan could significantly
decrease the rate of hospitalization for HF, but not
cardiovascular mortality and myocardial reinfarction. In fact,
for patients following AMI, timely reperfusion, standard
antiplatelet, and lipid lowering therapies may be a more
pivotal management for lowering the risk factors of coronary
heart disease and decreasing the occurrence of myocardial
events and reinfarction.
11
The 6MWT distance is an important indicator for the
evaluation of cardiac function. In our meta-analysis,
sacubitrilvalsartan was inclined to increase the 6MWT
distance, but there was no significant difference. Actually, the
6MWT distance from each included RCTs was effectively
improved by sacubitrilvalsartan.
17,21,25
The limited sample
size and study numbers may decrease the power of our meta-
analysis. NT-ProBNP is not degraded by neprilysin, and hence,
the dynamic levels of NT-ProBNP could reflect the reduction
of LV wall stress in patients treated with sacubitrilvalsartan.
As with most RCTs, NT-ProBNP was significantly reduced by
sacubitrilvalsartan in this meta-analysis. However, Docherty
et al.
13
did not find this difference. It was noteworthy that the
initial time of sacubitrilvalsartan treatment in this study was
3 months after AMI, and before sacubitrilvalsartan
administration, the early therapies have made a rapid
reduction in NT-ProBNP to the almost normal level (baseline:
213 pg/mL vs. 242 pg/mL). Therefore, it is hard to further
decrease the NT-ProBNP from the aforementioned baseline
by sacubitrilvalsartan. In addition, the considerable
heterogeneity for NT-ProBNP and 6MWT may be also partly
attributed to the significant variations of baseline cardiac
function and sacubitrilvalsartan doses of participants in each
included RCT.
As the key clinical markers for cardiac function and LV
remodelling, both the LVEF and LVEDD were obviously
improved by sacubitrilvalsartan, but considerable
heterogeneity was observed. The heterogeneity may result
from the different measuring methods for LVEF and LVEDD.
Most RCTs used transthoracic echocardiography; however,
the Docherty et al. study used cardiac magnetic resonance
imaging (MRI), which is more accurate to assess the cardiac
function. Data from the Docherty et al. study
13
suggested that
sacubitril valsartan neither increased LVEF (36.9% vs. 39.1%)
nor reduced the left ventricular end-diastolic volume index
(LVEDVI, 111.0 mL/m
2
vs. 118.1 mL/m
2
). As we all known, the
cardiac remodelling started at the early stage of AMI and
myocardial fibrosis was completed in a few months.
30
Therefore, to inhibit the LV remodelling preferably, sacubitril
valsartan or ACEI/ARB should be used as soon as possible. The
initial time of sacubitrilvalsartan administration in most
included RCTs was in 24 h after the pPCI, except for the
Docherty et al. study in which was 3 months after AMI. Hence,
the discrepancy between this meta-analysis and the Docherty
et al. study may be mainly attributed to the initial time
difference of sacubitrilvalsartan use.
With regard to the safety of sacubitrilvalsartan, previous
studies demonstrated that hypotension was more frequently
appeared in patients receiving sacubitrilvalsartan. Data from
PARAGON-HF suggested that the mean systolic blood
pressure was approximately 5 mmHg lower in sacubitril
valsartan than in valsartan.
31
However, in our meta-analysis,
the incidences of hypotension, hyperkalaemia, angioedema,
and cough were similar between sacubitrilvalsartan and
ACEI/ARB groups. But, due to the limited study numbers,
these results about side effects should be interpreted
prudently.
There were several limitations in this meta-analysis. First,
the sample size of most included RCTs was small and may
make our estimates at risk of bias. Second, about sacubitril
valsartan administration, the initial time, dosage, and
duration were variable in each included RCT, which might
produce confound bias for the evaluation. Third, Eggers test
indicated that publication bias was observed in the NT-
ProBNP, and hence, it should be interpreted prudently.
Fourth, the different type and dosage of ACEI/ARB in each
study might also influence the accuracy of our estimates.
Lastly, the cardiac function of participants in included RCTs
was significant variation; this may influence the benefit
evaluation. Carefully selecting patients at higher risk of
developing HF, or even with early signs of LV dysfunction, may
increase the benefits of sacubitrilvalsartan for AMI patients.
Conclusions
In summary, this meta-analysis suggests that early
administration of sacubitrilvalsartan may be superior to
conventional ACEI/ARB to decrease the risk of hospitalization
for HF, improve the cardiac function, and reverse the LV
remodelling in AMI patients. In the future, PARADISE-MI
study,
32
a well-designed RCT with large sample size, will
confirm our findings and further investigate whether
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sacubitrilvalsartan could improve the long-term prognosis of
patients following AMI.
Acknowledgements
We acknowledge all the original authors of the included
studies for their excellent work.
Conflict of interest
The authors declare that they have no conflict of interest.
Funding
This work was funded by the National Natural Science
Foundation of China (No. 81900361).
Supporting information
Additional supporting information may be found online in the
Supporting Information section at the end of the article.
Table S1. Search strategies of PubMed and the Cochrane
Library.
Table S2. Results of sensitivity analysis of all outcomes.
Table S3. DOI number of included Chinese studies. Figure S1.
Risk of bias of included RCTs by RoB2 tool from Cochrane.
Figure S2. The subgroup analysis of hospitalization for HF
based on the use of ACEI or ARB in control group. ACEI,
angiotensin-converting enzyme inhibitors; ARB, angiotensin
receptor blockers; CI, confidence interval; HF, heart failure;
RR, risk ratio.
Figure S3. The subgroup analysis of the NT-ProBNP based on
the use of ACEI or ARB in control group. ACEI, angiotensin-
converting enzyme inhibitors; ARB, angiotensin receptor
blockers; CI, confidence interval; WMD, weighted mean
difference.
Figure S4. The subgroup analysis of the change of LVEF based
on the use of ACEI or ARB in control group. ACEI, angiotensin-
converting enzyme inhibitors; ARB, angiotensin receptor
blockers; CI, confidence interval; LVEF, left ventricular
ejection fraction; WMD, weighted mean difference. Figure S5.
The subgroup analysis of the change of LVEDD based on the
use of ACEI or ARB in control group. ACEI, angiotensin-
converting enzyme inhibitors; ARB, angiotensin receptor
blockers; CI, confidence interval; LVEDD, left ventricular end-
diastolic dimension; WMD, weighted mean difference.
Figure S6. The incidence of side effects with sacubitril
valsartan vs. ACEI/ARB. CI, confidence interval; RR, risk ratio.
Figure S7. Funnel plots of the rate of myocardial reinfarction
(A), the rate of hospitalization for heart failure (B), the change
of LVEF (C), the change of LVEDD (D), the level of NT-ProBNP
(E), the incidence of hypotension (F). LVEF, left ventricular
ejection fraction; LVEDD, left ventricular end-diastolic
dimension.
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Preview text:

lOMoARcPSD| 39099223 ESC HEART FAILURE ORIGINAL ARTICLE
ESC Heart Failure 2021; 8: 4852–4862
Published online 30 October 2021 in Wiley Online Library (wileyonlinelibrary.com) DOI: 10.1002/ehf2.13677
The benefits of sacubitril–valsartan in patients with
acute myocardial infarction: a systematic review and meta-analysis
Bo Xiong1†, Dan Nie2†, Jun Qian1, Yuanqing Yao1, Gang Yang1, Shunkang Rong1, Que Zhu1, Yun Du1, Yonghong Jiang1 and Jing Huang1*
1Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing, 4 00010, China; and 2Department of
Gastroenterology, The Chongqing Traditional Chinese Medicine Hospital, Chongqing Academy of Traditional Chinese Medicine, Chongqing, China Abstract Aims
We aimed to investigate whether sacubitril–valsartan could further improve the prognosis, cardiac function, and left
ventricular (LV) remodelling in patients following acute myocardial infarction (AMI).
Methods and results We searched the PubMed, Embase, Cochrane Library, and China National Knowledge Infrastructure (CNKI)
from inception to 10 May 2021 to identify potential articles. Randomized controlled trials (RCTs) meeting the inclusion criteria
were included and analysed. Thirteen RCTs, covering 1358 patients, were analysed. Compared with angiotensin-converting
enzyme inhibitors (ACEI)/angiotensin receptor blockers (ARB), sacubitril–valsartan did not significantly reduced the
cardiovascular mortality [risk ratio (RR) 0.65, 95% confidence interval (CI) 0.22 to 1.93, P = 0.434] and the rate of myocardial
reinfarction (RR 0.65, 95% CI 0.29 to 1.46, P = 0.295) of patients following AMI, but the rate of hospitalization for heart failure
(HF) (RR 0.48, 95% CI 0.35 to 0.66, P < 0.001) and the change of LV ejection fraction (LVEF) [weighted mean difference (WMD)
5.49, 95% CI 3.62 to 7.36, P < 0.001] were obviously improved. The N-terminal pro-brain natriuretic peptide (NT-ProBNP) level
(WMD 310.23, 95% CI 385.89 to 234.57, P < 0.001) and the LV end-diastolic dimension (LVEDD) (WMD 3.16, 95% CI 4.59 to
1.73, P < 0.001) were also significantly lower in sacubitril–valsartan group than in ACEI/ARB group. Regarding safety, sacubitril–
valsartan did not increase the risk of hypotension, hyperkalaemia, angioedema, and cough.
Conclusions This meta-analysis suggests that early administration of sacubitril–valsartan may be superior to conventional
ACEI/ARB to decrease the risk of hospitalization for HF, improve the cardiac function, and reverse the LV remodelling in patients following AMI.
Keywords Sacubitril–valsartan; Angiotensin-converting enzyme inhibitors; Angiotensin receptor blockers; Heart failure; Acute
myocardial infarction; Meta-analysis
Received: 24 June 2021; Revised: 29 August 2021; Accepted: 5 October 2021
*Correspondence to: Jing Huang, MD, FACC, Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, No. 76, Linjiang Road, Chongqing
400010, China. Tel: +8618883909081; Fax: 0086-023-63693702. Email: huangjingcqmu@126.com
These authors are equal contributors. Introduction
intervention (pPCI) has been widely performed in patients with AMI
Acute myocardial infarction (AMI) is a common and severe to reduce infarct size and preserve ventricular function,
type of coronary heart disease with high morbidity and
almost 25% AMI patients would develop into heart failure
mortality. Although primary percutaneous coronary
(HF).1 Substantial evidences indicated that β blockers,2
angiotensin-converting enzyme inhibitors (ACEI)/angiotensin lOMoARcPSD| 39099223
The benefits of sacubitril–valsartan in patients with acute myocardial infarction 4853
receptor blockers (ARB),3,4 and mineralocorticoid-receptor
without any restrictions from inception to 10 May 2021. The
antagonists (MRA)5 could effectively attenuate the left
search strategy included the following MeSH headings or
ventricular (LV) remodelling and reduce the risk of death of keywords: angiotensin-receptor neprilysin inhibitor,
AMI patients. However, their risk of re-hospitalization for HF
sacubitril–valsartan, LCZ696, MI, and AMI (Supporting and mortality remain high.6
Information, Table S1). Moreover, we manually checked the
Neuroendocrine hormones activation including the renin
reference list of retrieved articles to identify the potentially
angiotensin aldosterone system (RASS) and sympathetic
relevant studies. Studies were included if they met the
nervous system (SNS) play an important role in the
following criteria: (i) randomized controlled trials (RCTs); (ii)
progression of LV remodelling and HF occurrence after AMI.7,8
adult (age > 18 years) patients following AMI were treated
Therefore, besides timely revascularization, regulating
with sacubitril–valsartan vs. ACEI/ARB; and (iii) studies
neuroendocrine hormone balance is another pivotal way to
reported the primary or secondary outcomes.
improving their prognosis. In addition to blocking the RASS,
sacubitril– valsartan is also focused on inhibiting the activity
of neprilysin and decreasing the degradation of natriuretic Data extraction and quality assessment
peptides to further counteract the adverse effects of RASS and
SNS activation by promoting vasodilation, natriuresis, and Data extraction was performed by two independent
diuresis, along with inhibiting myocardial fibrosis and
reviewers with discrepancies resolved by discussion. The hypertrophy.9,10
following data were extracted from each included study: basic
characteristics of studies (authors, publication year, journal,
Recently, several clinical trials compared the benefits of
country, study design), characteristics of patients (sample
sacubitril–valsartan and ACEI/ARB in patients following AMI
size, gender, age, type of MI, time of pPCI, LVEF, medical
and identified that sacubitril–valsartan could further improve
history), sacubitril–valsartan and ACEI/ARB treatments (initial
the LV ejection fraction (LVEF) and significantly reduce the
time, dosage, frequency, duration, mean follow-up time),
major adverse cardiac events (MACE), HF re-hospitalization
primary outcomes (cardiovascular mortality, rate of
risk, as well as LV dimensions.6,11,12 However, Docherty et al.13
myocardial reinfarction, rate of hospitalization for HF), and
found that in comparison with valsartan, sacubitril–valsartan
secondary outcomes [NT-ProBNP level, change of LVEF,
neither effectively improved the LVEF nor significantly
change of 6 min walk test (6MWT) distance, change of left
reduced the N-terminal pro-brain natriuretic peptide (NT-
ventricular end-diastolic dimension (LVEDD), and incidence of
ProBNP) level, LV volume, and LV mass index in this kind of side effects including hypotension, hyperkalaemia,
patients. Hence, compared with ACEI/ARB, the benefits of
angioedema, and cough]. The risk of bias of included studies
sacubitril–valsartan in patients following AMI are still
was evaluated by RoB2 tool from
controversial. For this purpose, we performed a meta-analysis Cochrane.15
to investigate whether sacubitril–valsartan could bring more
clinical benefits for patients following AMI than ACEI/ARB drugs. Statistical analysis
Statistical methods according to our previous study were used Methods
with STATA 14.0 (Stata Corp, College Station, Texas).16
This meta-analysis was performed according to the Preferred
Heterogeneity was evaluated using I2 test (0–40%: not
Reporting Items for Systematic Reviews and Meta-Analyses
important; 30–60%: moderate heterogeneity; 50–90%: (PRISMA) guidelines.14 substantial heterogeneity; 75–100%: considerable
heterogeneity). Risk ratio (RR) and 95% confidence interval
(CI) were calculated for cardiovascular mortality, rate of
Search strategy and study selection
myocardial reinfarction, rate of hospitalization for HF, and
incidence of side effects with fixed effect model, if there was
Literatures were searched in PubMed, Embase, Cochrane
no significant heterogeneity. Otherwise, a random effect
Library, and China National Knowledge Infrastructure (CNKI)
model was used. Weighted mean difference (WMD) and 95%
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223 4854 B. Xiong et al.
CI were calculated for NT-ProBNP level, and changes of LVEF, Results
6MWT distance, as well as LVEDD with fixed effect model,
when there was no significant heterogeneity. Otherwise, a Study characteristics
random effect model was used. In addition, sensitivity
analysis, funnel plots, and Egger’s test were used to assess the The literature research and selection are shown in Figure 1. A
Figure 1 Study selection. CNKI, China National Knowledge Infrastructure; RCT, randomized controlled trial.
stability of estimates and the publication bias, respectively.
total of 234 articles were acquired. A total of 212 articles were
The P value < 0.05 is considered significant.
excluded by title and abstract screening and 22 articles were
involved in full text evaluation. Seven articles were excluded
for duplication, cohort study, or not reporting associated
outcomes and 13 RCTs were finally included in
our meta-analysis.6,11–13,17–25 The baseline characteristics of
included RCTs are summarized in Table 1. Generally, the 13
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223
The benefits of sacubitril–valsartan in patients with acute myocardial infarction 4855
RCTs with a total of 1358 patients were published between
found (I2 = 0%) and fixed effect model was used. In
2019 and 2021. The baseline characteristics, such as sample
comparison with ACEI/ARB, the cardiovascular mortality was
size, mean age, and sex ratio of each study, were not
not significantly improved by sacubitril–valsartan in AMI
significantly different between the two groups. The mean
patients (RR 0.65, 95% CI 0.22 to 1.93, P = 0.434; Figure 2). In
follow-up duration ranged from 1 to 13 months. The risk of
addition, the rates of myocardial reinfarction (I2 = 0%) and
bias analysis indicated that one study was high risk, six studies
hospitalization for HF (I2 = 0%) were investigated in 5 RCTs
were some concerns, and six studies were low risk (Figure S1).
including 469 and 660 patients, respectively, without Primary outcomes
significant heterogeneity. The results indicated that
compared with ACEI/ARB, sacubitril–valsartan did not
Three studies with a total of 424 patients reported the
significantly lower the rate of myocardial reinfarction (RR
cardiovascular mortality. No significant heterogeneity was 0.65, 95% CI 0.29 to 1.46,
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223 4856 B. Xiong et al.
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223
The benefits of sacubitril–valsartan in patients with acute myocardial infarction 4857
Figure 2 Risks of cardiovascular mortality, myocardial reinfarction, and hospitalization for HF with sacubitril–valsartan vs. angiotensin-converting
enzyme inhibitors/angiotensin receptor blockers. CI, confidence interval; HF, heart failure; RR, risk ratio.
P = 0.295; Figure 2); the rate of hospitalization for HF (RR 0.48,
Moreover, the improvement of 6MWT distance was
95% CI 0.35 to 0.66, P < 0.001; Figure 2) was obviously lower
evaluated in 3 studies including 288 patients with
in sacubitril–valsartan group than in ACEI/ARB group. In
considerable heterogeneity (I2 = 99.8%). Compared with
addition, subgroup analysis suggested that sacubitril–
ACEI/ARB, sacubitril–valsartan was inclined to effectively
valsartan was superior to both ACEI and ARB for decreasing
improve the 6MWT distance in patients following AMI, but no
the rate of hospitalization for HF (Figure S2).
significant difference was observed (WMD 73.44, 95% CI
25.81 to 172.69, P = 0.147; Figure 4).
There were 11 RCTs with 1043 patients and 7 RCTs with 636 Secondary outcomes
patients reported the changes of LVEF and LVEDD,
respectively. Both of them had considerable heterogeneity
Eleven studies with 1001 patients compared the NT-ProBNP (LVEF: I2 = 99.8%; LVEF: I2 = 99.6%) and random effect model
level at the time of last visit between the two groups. There
was used. Our results showed that sacubitril–valsartan
was considerable heterogeneity (I2 = 96.7%) and random significantly increased the LVEF (WMD 5.49, 95% CI 3.62 to
effect model was used for analysis. The NT-ProBNP level was 7.36, P < 0.001; Figure 5) and reversed the LVEDD (WMD
significantly lower in sacubitril–valsartan group than in 3.16, ACEI/ARB group (WMD 310.23, 95% CI 385.89
to 95% CI 4.59 to 1.73, P < 0.001; Figure 6). Subgroup analysis
234.57, P < 0.001; Figure 3), and this effect was always
indicated that either compared with ACEI or ARB, sacubitril–
observed in the subgroup analysis of ACEI and ARB (Figure S3).
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223 4858 B. Xiong et al.
valsartan could invariably improve the LVEF (Figure S4) and hypotension (5 RCTs with 439 patients), hyperkalaemia (4 LVEDD (Figure S5).
RCTs with 378 patients), angioedema (2 RCTs with 148
With regard to the safety, we analysed the most common
patients), and cough (2 RCTs with 198 patients). Except
side effects of sacubitril–valsartan and ACEI/ARB including
hypotension with moderate heterogeneity, none of them had
Figure 3 N-terminal pro-brain natriuretic peptide with sacubitril–valsartan vs. angiotensin-converting enzyme inhibitors/angiotensin receptor blockers.
CI, confidence interval; WMD, weighted mean difference.
Figure 4 The change of 6 min walk test distance with sacubitril–valsartan vs. angiotensin-converting enzyme inhibitors/angiotensin receptor blockers.
CI, confidence interval; WMD, weighted mean difference.
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223
The benefits of sacubitril–valsartan in patients with acute myocardial infarction 4859
significant heterogeneity and fixed effect model was used.
CI 0.12 to 3.85, P = 0.650; Figure S6), and cough (RR 0.60, 95%
The incidences of hypotension (RR 1.24, 95% CI 0.74
CI 0.15 to 2.41, P = 0.468; Figure S6) were all similar between
to 2.08, P = 0.421; Figure S6), hyperkalaemia (RR 0.85, 95% CI
sacubitril–valsartan and ACEI/ARB groups.
0.28 to 2.62, P = 0.783; Figure S6), angioedema (RR 0.67, 95%
Figure 5 The change of left ventricular ejection fraction with sacubitril–valsartan vs. angiotensin-converting enzyme inhibitors/angiotensin receptor
blockers. CI, confidence interval; WMD, weighted mean difference.
Figure 6 The change of left ventricular end-diastolic dimension with sacubitril–valsartan vs. angiotensin-converting enzyme inhibitors/angiotensin
receptor blockers. CI, confidence interval; WMD, weighted mean difference.
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223 4860 B. Xiong et al.
Publication bias and sensitivity analysis
hypotension, hyperkalaemia, angioedema, and cough, was
similar between sacubitril–valsartan and ACEI/ARB groups.
We evaluated the publication bias of the rate of myocardial
Substantial myocardial cells necrosis could decrease
reinfarction, the rate of hospitalization for HF, the NT-ProBNP, myocardial contractility and cardiac output, and
the change of LVEF, the change of LVEDD, and the incidence compensatory activate several neurohormone pathways
of hypotension. The funnel plots of all were not symmetric including RASS and SNS, which is beneficial to maintain
(Figure S7), but Egger’s test indicated that publication bias haemodynamic stability in the short term.6,26 However, RASS
was only observed in the NT-ProBNP (P = 0.009) and there and SNS long-term activation could increase cardiac volume
were no significant publication bias in the rate of and pressure loads, enhance myocardial oxygen consumption,
hospitalization for HF (P = 0.211), the change of LVEF (P = facilitate cardiomyocyte hypertrophy, and finally result in LV
0.232), the change of LVEDD (P = 0.132), and the incidence of remodelling. On the contrary, the natriuretic peptide system,
hypotension (P = 0.749). To test the stability of our results, we as an important compensation pathway for HF, not only had
performed sensitivity analyses for all outcomes and the vasodilatory and diuretic effects but also could suppress the
results indicated that all estimates were stable (Table S2).
RASS and SNS to facilitate myocardial relaxation and reverse
cardiac remodelling.27 Therefore, suppressing the RAAS and
SNS pathways, and augmenting the natriuretic peptide Discussion
system, may be a promising strategy for the management of
patients following AMI, especially, in patients with LV
Our meta-analysis demonstrated that compared with dysfunction or at high risk of developing HF.
conventional ACEI/ARB, early administration of sacubitril–
Similar with ACEI/ARB, which is able to inhibit RASS,
valsartan neither significantly improved the cardiovascular sacubitril–valsartan is also to suppress neprilysin to prevent
mortality and the rate of myocardial reinfarction nor the degradation of ANP and BNP and elevate the activity of
increased the 6MWT distance in patients following AMI. But natriuretic peptide system. Several studies have proved that
it was able to reduce the rate of hospitalization for HF and NT-
sacubitril–valsartan was a more effective alternative than
ProBNP level, improve the LVEF, and alleviate the LV ACEI/ARB to improve the clinical outcomes of HF with reduced
remodelling. Moreover, the risk of side effects, including ejection fraction (HFrEF).28,29 But whether early administration
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223
The benefits of sacubitril–valsartan in patients with acute myocardial infarction 4861
of sacubitril–valsartan in patients following AMI could bring cardiac remodelling started at the early stage of AMI and
more benefits is still unclear. In accordance with most myocardial fibrosis was completed in a few months.30
included RCTs, our meta-analysis found that in comparison Therefore, to inhibit the LV remodelling preferably, sacubitril–
with ACEI/ARB, sacubitril–valsartan could significantly valsartan or ACEI/ARB should be used as soon as possible. The
decrease the rate of hospitalization for HF, but not initial time of sacubitril–valsartan administration in most
cardiovascular mortality and myocardial reinfarction. In fact, included RCTs was in 24 h after the pPCI, except for the
for patients following AMI, timely reperfusion, standard Docherty et al. study in which was 3 months after AMI. Hence,
antiplatelet, and lipid lowering therapies may be a more the discrepancy between this meta-analysis and the Docherty
pivotal management for lowering the risk factors of coronary et al. study may be mainly attributed to the initial time
heart disease and decreasing the occurrence of myocardial difference of sacubitril–valsartan use. events and reinfarction.11
With regard to the safety of sacubitril–valsartan, previous
The 6MWT distance is an important indicator for the studies demonstrated that hypotension was more frequently
evaluation of cardiac function. In our meta-analysis, appeared in patients receiving sacubitril–valsartan. Data from
sacubitril–valsartan was inclined to increase the 6MWT PARAGON-HF suggested that the mean systolic blood
distance, but there was no significant difference. Actually, the pressure was approximately 5 mmHg lower in sacubitril–
6MWT distance from each included RCTs was effectively valsartan than in valsartan.31 However, in our meta-analysis,
improved by sacubitril–valsartan.17,21,25 The limited sample the incidences of hypotension, hyperkalaemia, angioedema,
size and study numbers may decrease the power of our meta-
and cough were similar between sacubitril–valsartan and
analysis. NT-ProBNP is not degraded by neprilysin, and hence, ACEI/ARB groups. But, due to the limited study numbers,
the dynamic levels of NT-ProBNP could reflect the reduction these results about side effects should be interpreted
of LV wall stress in patients treated with sacubitril–valsartan. prudently.
As with most RCTs, NT-ProBNP was significantly reduced by
There were several limitations in this meta-analysis. First,
sacubitril–valsartan in this meta-analysis. However, Docherty the sample size of most included RCTs was small and may
et al.13 did not find this difference. It was noteworthy that the make our estimates at risk of bias. Second, about sacubitril–
initial time of sacubitril–valsartan treatment in this study was valsartan administration, the initial time, dosage, and
3 months after AMI, and before sacubitril–valsartan duration were variable in each included RCT, which might
administration, the early therapies have made a rapid produce confound bias for the evaluation. Third, Egger’s test
reduction in NT-ProBNP to the almost normal level (baseline: indicated that publication bias was observed in the NT-
213 pg/mL vs. 242 pg/mL). Therefore, it is hard to further ProBNP, and hence, it should be interpreted prudently.
decrease the NT-ProBNP from the aforementioned baseline Fourth, the different type and dosage of ACEI/ARB in each
by sacubitril–valsartan. In addition, the considerable study might also influence the accuracy of our estimates.
heterogeneity for NT-ProBNP and 6MWT may be also partly Lastly, the cardiac function of participants in included RCTs
attributed to the significant variations of baseline cardiac was significant variation; this may influence the benefit
function and sacubitril–valsartan doses of participants in each evaluation. Carefully selecting patients at higher risk of included RCT.
developing HF, or even with early signs of LV dysfunction, may
As the key clinical markers for cardiac function and LV increase the benefits of sacubitril–valsartan for AMI patients.
remodelling, both the LVEF and LVEDD were obviously improved by sacubitril–valsartan, but considerable
heterogeneity was observed. The heterogeneity may result Conclusions
from the different measuring methods for LVEF and LVEDD. In summary, this meta-analysis suggests that early
Most RCTs used transthoracic echocardiography; however,
administration of sacubitril–valsartan may be superior to
the Docherty et al. study used cardiac magnetic resonance
conventional ACEI/ARB to decrease the risk of hospitalization
imaging (MRI), which is more accurate to assess the cardiac
for HF, improve the cardiac function, and reverse the LV
function. Data from the Docherty et al. study13 suggested that
remodelling in AMI patients. In the future, PARADISE-MI
sacubitril– valsartan neither increased LVEF (36.9% vs. 39.1%)
study,32 a well-designed RCT with large sample size, will
nor reduced the left ventricular end-diastolic volume index
confirm our findings and further investigate whether
(LVEDVI, 111.0 mL/m2 vs. 118.1 mL/m2). As we all known, the
ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677 lOMoARcPSD| 39099223 4862 B. Xiong et al.
sacubitril–valsartan could improve the long-term prognosis of Figure S2. The subgroup analysis of hospitalization for HF patients following AMI.
based on the use of ACEI or ARB in control group. ACEI,
angiotensin-converting enzyme inhibitors; ARB, angiotensin
receptor blockers; CI, confidence interval; HF, heart failure; Acknowledgements RR, risk ratio.
Figure S3. The subgroup analysis of the NT-ProBNP based on
We acknowledge all the original authors of the included
the use of ACEI or ARB in control group. ACEI, angiotensin-
studies for their excellent work.
converting enzyme inhibitors; ARB, angiotensin receptor
blockers; CI, confidence interval; WMD, weighted mean difference. Conflict of interest
Figure S4. The subgroup analysis of the change of LVEF based
on the use of ACEI or ARB in control group. ACEI, angiotensin-
The authors declare that they have no conflict of interest.
converting enzyme inhibitors; ARB, angiotensin receptor Funding
blockers; CI, confidence interval; LVEF, left ventricular
This work was funded by the National Natural Science
ejection fraction; WMD, weighted mean difference. Figure S5.
Foundation of China (No. 81900361).
The subgroup analysis of the change of LVEDD based on the
use of ACEI or ARB in control group. ACEI, angiotensin-
converting enzyme inhibitors; ARB, angiotensin receptor
blockers; CI, confidence interval; LVEDD, left ventricular end- Supporting information
diastolic dimension; WMD, weighted mean difference.
Figure S6. The incidence of side effects with sacubitril–
Additional supporting information may be found online in the
valsartan vs. ACEI/ARB. CI, confidence interval; RR, risk ratio.
Supporting Information section at the end of the article.
Figure S7. Funnel plots of the rate of myocardial reinfarction
(A), the rate of hospitalization for heart failure (B), the change
Table S1. Search strategies of PubMed and the Cochrane
of LVEF (C), the change of LVEDD (D), the level of NT-ProBNP Library.
(E), the incidence of hypotension (F). LVEF, left ventricular
Table S2. Results of sensitivity analysis of all outcomes.
ejection fraction; LVEDD, left ventricular end-diastolic
Table S3. DOI number of included Chinese studies. Figure S1. dimension.
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ESC Heart Failure 2021; 8: 4852–4862 DOI: 10.1002/ehf2.13677