Abstract P158: Systematic Review and Meta-analysis of Acute Effects of Alcohol Consumption on Risk of Cardiovascular Events
Introduction: Although considerable research describes the cardiovascular effects of habitual moderate and heavy alcohol consumption, the acute risks following alcohol intake have not been well characterized. Based on its physiological effects, alcohol may have markedly different effects on acute and long-term risk. We assessed the hypothesis that moderate alcohol consumption is associated with an immediately higher risk of cardiovascular events that becomes protective after 24 hours, whereas heavy alcohol drinking is associated with higher cardiovascular risk both immediately and in the following days.
Methods: We searched CINAHL, Embase, PubMed and PsycINFO from inception to March 12 2015, supplemented with manual screening for observational studies assessing the association between alcohol intake and cardiovascular events in the following hours and days. We calculated pooled relative risks (RRs) and 95% confidence intervals (CIs) for the association between alcohol intake and myocardial infarction (MI), ischemic stroke (IS) and hemorrhagic stroke (HS) using DerSimonian and Laird random-effects models to model any alcohol intake or dose-response relationships of alcohol intake and cardiovascular events.
Results: Among 1056 citations and 37 full-text articles reviewed, 23 studies (29457 participants) were included. Moderate alcohol consumption was associated with an acutely higher cardiovascular risk that was attenuated after 24 hours and even protective for MI and HS (≈2-4 drinks: RR=30% lower risk), and protective against IS within one week (≈6 drinks: RR=19% lower risk). In contrast, heavy alcohol drinking was associated with higher cardiovascular risk in the following day (≈6-9 drinks: RR=1.3-2.3) and week (≈19-30 drinks: RR=2.25-6.2).
Conclusions: In conclusion, there appears to be a consistent finding of an acutely higher cardiovascular risk following any alcohol consumption but by 24 hours, only heavy alcohol intake conferred continued risk.
Author Disclosures: E. Mostofsky: None. H.S. Chahal: None. K.J. Mukamal: None. E.B. Rimm: None. M.A. Mittleman: None.
- © 2016 by American Heart Association, Inc.