Background: Cigarette smoking has several known detrimental effect on cardiovascular system.  QT dispersion (QTd) is among the important predictors of cardiac death. Objective:  To assess the acute effect of smoking of a single standard cigarette on QT and QTc (corrected QT) dispersion, hence on the risk of ventricular arrhythmias in healthy smokers and non-smokers. Methods: 111 healthy men wit...

conclusions chronic smoking caused left ventricular diastolic dysfunction. acute intake caused left and right ventricular diastolic dysfunction. changes persisted up to 30 minutes after smoking, although diastolic blood pressure returned to normal state. objectives the current study aimed to evaluate the acute and chronic effects of smoking on the left and right ventricular (rv) diastolic funct...

effective factors on smoking based on basnef model in male students in tehran medical sciences university in 2009 zareipour ma1, sadeghi r*2, sadeghi tabatabaei sa3, seyedi s4 received: 25 nov, 2010 accepted: 25 dec, 2010 abstract background & aims: smoking as a health risk behavior endangers not only the individual but also community health and is one of the preventable causes of death. this r...

background: substance abuse is one of the most complicated social problems. understanding socio-demographic characteristics of those who abuse substances could help deal with this problem more efficiently. the main objective of this study was to determine socio-demographic characteristics associated with alcohol drinking, cigarettes smoking and drug abuse among a sample of male medical universi...

objectives: the mean age of cigarette smoking has decreased along with an increase in its prevalence, in developing countries. the aim of this systematic review is to determine the prevalence of lifetime, current and daily smoking among middle school students in iran . methods: various search methods have been used in this study including searching different international databanks such as pubm...