At baseline, no patients had a history of heart failure or coronary heart disease, and over a median follow-up of 8.0 years, there were 147 hospitalizations for heart failure in the cohort, the investigators reported.
Current smoking, compared with never smoking, was significantly associated with incident heart failure hospitalization after adjusting for risk factors and coronary heart disease (hazard ratio, 2.82; 95% confidence interval, 1.71-4.64).
Likewise, smoking intensity of at least 20 cigarettes a day (HR, 3.48; 95% CI, 1.65-7.32) and smoking burden of at least 15 pack-years (HR, 2.06; 95% CI, 1.29-3.33) both were significantly associated with incident heart failure hospitalization .
Compared with never smoking, current smoking was significantly associated with higher mean LV mass index and lower mean LV circumferential strain, even after adjusting for confounding variables (P less than 0.05 for both comparisons).