Abstract Background Heroin addiction is currently a significant health problem, and information on the electrocardiographic effects of heroin is limited. Objetivo The aim of the present study is to investigate effects of heroin addiction on electrocardiographic parameters. Methods A total of 136 individuals, including 66 individuals who smoke heroin as the study group and 70 healthy individuals with no drug addiction as the control group, were included in the study. Individuals who inject heroin were excluded. Electrocardiographic (ECG) evaluation of […]