Assessment of the clinical factors related to the prevalence of restenosis in patients undergone angioplasty using logistic regression

The incidence of restenosis after coronary angioplasty is one of the main concerns of heart specialists which can lead to heart bypass surgery, myocardial infarction, and death. The aim of this study was to determine the clinical factors related to the prevalence of restenosis in patients undergone angioplasty using logistic regression in patients of Zanjan city. In the present case-series study, all the patients who referred to Ayatollah Musavi hospital of Zanjan city from April 2009 till June of 2011 for angioplasty were followed-up for the occurrence of restenosis. Based on the patients’ medical records, all of the demographic and clinical data were gathered by “Data Gathering form of Patients Undergone Angioplasty”. Content validity was confirmed and its reliability was approved by Kappa test. Data was analyzed by SPSS/ 21. The prevalence of restenosis after angioplasty was estimated around 43%. According to the logistic regression model, the odds ratio of restenosis in smoking patients was 87%, in patients with unstable angina was 71% and in those who had a history of myocardial infraction was 76% more than other patients (P<0.05). In the present study, the effective factors of restenosis were reported as smoking, suffering from unstable angina and history of myocardial infraction. Therefore, in order to prevent the occurrence of these risk factors, it is crucial to perform regular follow-ups of patients at risk.