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2018 ; 97
(15
): e0409
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Cardioprotective effect of histamine H2 antagonists in congestive heart failure:
A systematic review and meta-analysis
#MMPMID29642208
Zhang J
; Cai WK
; Zhang Z
; Wang P
; Lin XQ
; Feng J
; Fu SC
; He GH
Medicine (Baltimore)
2018[Apr]; 97
(15
): e0409
PMID29642208
show ga
BACKGROUND: Histamine H2 antagonists (H2RAs) have long been suggested to have
beneficial effects on congestive heart failure (CHF). However, full agreement
about the cardioprotective effects of H2RAs is still not reached yet. Therefore,
this study aims to clarify the effects of H2RAs on myocardial function in CHF
patients by meta-analysis. METHODS: Electronic databases including PubMed,
Embase, and Cochrane Library were retrieved. Randomized controlled trials
comparing the cardiac effects of H2RAs and placebo or other medicines were
collected. Pooled mean differences (MDs) with 95% confidence intervals (CIs) were
calculated and meta-analysis was performed using RevMan 5.3 software. RESULTS: A
total of 10 studies (472 participants) were included in this meta-analysis. H2RAs
exhibited significant negative inotropic and chronotropic effects to reduce heart
rate (MD: -3.90; 95%CI: -7.07 to -0.73, P?=?.02). Furthermore, although H2RAs did
not affect the blood pressure in health volunteers, they significantly decreased
the blood pressure of CHF patients. Additionally, H2RAs were also associated with
significant increase in pre-ejection period and the ratio of pre-ejection period
to left ventricular ejection time. CONCLUSION: In summary, these findings showed
that H2RAs exerted negative inotropic and chronotropic effects to reduce heart
rate and blood pressure, which, similar to beta-adrenergic receptor blockers,
might decrease myocardial oxygen demand and eventually result in improvement of
CHF symptoms. These data provided further evidence for the effect of H2RAs on
cardiac function and novel potential strategy for treatment of CHF.