tetano
Editor, Senior Moderator
Heart. 2019 Aug 23. pii: heartjnl-2019-315193. doi: 10.1136/heartjnl-2019-315193. [Epub ahead of print]
[h=1]Influenza vaccination in patients with heart failure: a systematic review and meta-analysis of observational studies.[/h] Rodrigues BS[SUP]1[/SUP], David C[SUP]2[/SUP], Costa J[SUP]2,[/SUP][SUP]3[/SUP], Ferreira JJ[SUP]2,[/SUP][SUP]3[/SUP], Pinto FJ[SUP]4,[/SUP][SUP]5[/SUP], Caldeira D[SUP]6,[/SUP][SUP]4,[/SUP][SUP]5[/SUP].
[h=3]Author information[/h] 1 Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. 2 Laboratory of Clinical Pharmacology and Therapeutics, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. 3 Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. 4 Faculdade de Medicina, Centro Cardiovascular da Universidade de Lisboa (CCUL), Centro Acad?mico M?dico de Lisboa (CAML), Universidade de Lisboa, Lisboa, Portugal. 5 Cardiology Department, Hospital Santa Maria / Santa Maria University Hospital - Centro Hospitalar Universit?rio Lisboa Norte (CHULN), Lisboa, Portugal. 6 Laboratory of Clinical Pharmacology and Therapeutics, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal dgcaldeira@hotmail.com.
[h=3]Abstract[/h] [h=4]OBJECTIVE:[/h] Despite the progression of treatments over decades, heart failure (HF) is a disease with high morbidity, mortality and economic burden. Influenza infection is an important trigger for cardiovascular (CV) events, including HF. Influenza vaccination has been seen to reduce the risk of CV mortality in patients with coronary disease, but the effect in patients with HF is still unclear. Therefore, we conducted a systematic review to evaluate the effect of influenza vaccination in the morbimortality of patients with HF.
[h=4]METHODS:[/h] MEDLINE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, Health Technology Assessment and PsycINFO databases (December 2018) were searched for longitudinal studies evaluating influenza vaccination compared with a non-vaccination control group in patients with HF. The risk of bias was assessed according to the ROBINS-I tool. We performed a random-effects meta-analysis to estimate the pooled HRs with 95% CIs, and heterogeneity was evaluated using the I[SUP]2[/SUP] statistics.
[h=4]RESULTS:[/h] Six cohort studies evaluating 179 158 patients with HF were included in the meta-analysis. Influenza vaccination was associated with a lower risk of all-cause mortality (HR=0.83; 95% CI 0.76 to 0.91; I[SUP]2[/SUP]=75%). The effect of the influenza vaccination was not statistically significant in a pooled analysis of CV mortality (HR=0.92, 95% CI 0.73 to 1.15; 2 studies) and of all-cause hospitalisations (HR=1.01, 95% CI 0.92 to 1.11; 2 studies). The majority of outcomes in the included studies had a serious risk of bias and almost all evaluated outcomes had very low Grading of Recommendation, Assessment, Development and Evaluation (GRADE) evidence.
[h=4]CONCLUSIONS:[/h] Influenza vaccination was associated with a significant decrease in all-cause mortality risk in patients with HF.
? Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.
[h=4]KEYWORDS:[/h] Coryza; Flu; Influenza; Vaccine; heart failure
PMID: 31444266 DOI: 10.1136/heartjnl-2019-315193
[h=1]Influenza vaccination in patients with heart failure: a systematic review and meta-analysis of observational studies.[/h] Rodrigues BS[SUP]1[/SUP], David C[SUP]2[/SUP], Costa J[SUP]2,[/SUP][SUP]3[/SUP], Ferreira JJ[SUP]2,[/SUP][SUP]3[/SUP], Pinto FJ[SUP]4,[/SUP][SUP]5[/SUP], Caldeira D[SUP]6,[/SUP][SUP]4,[/SUP][SUP]5[/SUP].
[h=3]Author information[/h] 1 Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. 2 Laboratory of Clinical Pharmacology and Therapeutics, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. 3 Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. 4 Faculdade de Medicina, Centro Cardiovascular da Universidade de Lisboa (CCUL), Centro Acad?mico M?dico de Lisboa (CAML), Universidade de Lisboa, Lisboa, Portugal. 5 Cardiology Department, Hospital Santa Maria / Santa Maria University Hospital - Centro Hospitalar Universit?rio Lisboa Norte (CHULN), Lisboa, Portugal. 6 Laboratory of Clinical Pharmacology and Therapeutics, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal dgcaldeira@hotmail.com.
[h=3]Abstract[/h] [h=4]OBJECTIVE:[/h] Despite the progression of treatments over decades, heart failure (HF) is a disease with high morbidity, mortality and economic burden. Influenza infection is an important trigger for cardiovascular (CV) events, including HF. Influenza vaccination has been seen to reduce the risk of CV mortality in patients with coronary disease, but the effect in patients with HF is still unclear. Therefore, we conducted a systematic review to evaluate the effect of influenza vaccination in the morbimortality of patients with HF.
[h=4]METHODS:[/h] MEDLINE, Cochrane Central Register of Controlled Trials, Cochrane Database of Systematic Reviews, Health Technology Assessment and PsycINFO databases (December 2018) were searched for longitudinal studies evaluating influenza vaccination compared with a non-vaccination control group in patients with HF. The risk of bias was assessed according to the ROBINS-I tool. We performed a random-effects meta-analysis to estimate the pooled HRs with 95% CIs, and heterogeneity was evaluated using the I[SUP]2[/SUP] statistics.
[h=4]RESULTS:[/h] Six cohort studies evaluating 179 158 patients with HF were included in the meta-analysis. Influenza vaccination was associated with a lower risk of all-cause mortality (HR=0.83; 95% CI 0.76 to 0.91; I[SUP]2[/SUP]=75%). The effect of the influenza vaccination was not statistically significant in a pooled analysis of CV mortality (HR=0.92, 95% CI 0.73 to 1.15; 2 studies) and of all-cause hospitalisations (HR=1.01, 95% CI 0.92 to 1.11; 2 studies). The majority of outcomes in the included studies had a serious risk of bias and almost all evaluated outcomes had very low Grading of Recommendation, Assessment, Development and Evaluation (GRADE) evidence.
[h=4]CONCLUSIONS:[/h] Influenza vaccination was associated with a significant decrease in all-cause mortality risk in patients with HF.
? Author(s) (or their employer(s)) 2019. No commercial re-use. See rights and permissions. Published by BMJ.
[h=4]KEYWORDS:[/h] Coryza; Flu; Influenza; Vaccine; heart failure
PMID: 31444266 DOI: 10.1136/heartjnl-2019-315193