E-cigarettes, a substitute to traditional cigarettes, have gained popularity in many countries, but their impact on smokers with heart disease continues to be uncertain. 

A study conducted in Korea utilized data from the Korean National Health Insurance database, analysing 17,973 adult smokers who underwent health screening before and after percutaneous coronary intervention (PCI). 

Participants were categorized into three groups: continued combustible cigarette users, successful quitters, and switchers to E-cigarettes. E-cigarette users were further divided into dual users (those using both combustible cigarettes and E-cigarettes) and exclusive E-cigarette users. The primary outcome of the study was major adverse cardiac events (MACE). 

At the 2.4-year follow-up, participants who quit smoking had MACE reduced by 13% and by 18% in E-cigarette switchers, compared to continued smokers. Additionally, E-cigarette users had a significantly lower risk of MACE than dual users.

Source: Academic | [Read Full Story] (https://academic.oup.com/eurheartj/article-abstract/46/1/84/7828721?redirectedFrom=fulltext)