University of Oklahoma Health Sciences Center

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Author/s:

He, X, Zhao, J, He, J, Dong, Y, Liu, C

Date Added:

January 3, 2020

Journal/Publication:

BMC Cardiovascular Disorders

Publisher:

BioMed Central Ltd

Publication Date:

December 2, 2019

Issue:

Volume:

URL:

Association of household secondhand smoke exposure and mortality risk in patients with heart failure

Type:

Clinical Research Results

DOI (1):

10.1186/s12872-019-1269-y

PMID (1):

31791236

Keywords

heart failure

mortality

secondhand smoke

MeSH

Adult

Humans

self report

Proportional Hazards Models

risk factors

Tobacco Smoke Pollution

Nutrition Surveys

cardiovascular diseases

follow-up studies

Odds Ratio

health status

Surveys and Questionnaires

Prognosis

heart failure

Socioeconomic Factors

RPR Commentary

Second-hand smoke exposure appears to hasten death in patients with CHF. James W. Mold, MD, MPH

Abstract

BACKGROUND:

Secondhand smoke (SHS) exposure is a well-established cardiovascular risk factor, yet association between SHS and prognosis of heart failure remains uncertain.

METHOD:

Data were obtained from the US National Health and Nutrition Examination Surveys III from 1988 to 1994. Currently nonsmoking adults with a self-reported history of heart failure were included. Household SHS exposure was assessed by questionnaire. Participants were followed up through December 31, 2011. Cox proportional-hazards models were used to assess the association of household SHS exposure and mortality risk. Potential confounding factors were adjusted.

RESULTS:

Of 572 currently nonsmoking patients with heart failure, 88 were exposed to household SHS while 484 were not. There were totally 475 deaths during follow-up. In univariate analysis, household SHS was not associated with mortality risk (hazard ratio [HR]: 0.98, 95% confidence interval [CI]: 0.76-1.26, p = 0.864). However, after adjustment for demographic variables, socioeconomic variables and medication, heart failure patients in exposed group had a 43% increase of mortality risk compared with those in unexposed group (HR: 1.43, 95% CI: 1.10-1.86, p = 0.007). Analysis with further adjustment for general health status and comorbidities yielded similar result (HR: 1.47, 95% CI: 1.13-1.92, p = 0.005).

CONCLUSION:

Household SHS exposure was associated with increased mortality risk in heart failure patients.

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