Farhad Mahmudy - General Practitioner, Department of Cardiology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
Seyyed Hossein Mousavi - Assistant Professor, Department of Cardiology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
Adel Jouhari-Moghadam - Assistant Professor, Department of Cardiology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran
Farzad Mehrabi - Assistant Professor, Department of Neurology, School of Medicine, AJA University of Medical Sciences, Tehran, Iran

BACKGROUND: Syncope is a transient brief loss of consciousness accompanied with loss of postural tone. Of common places in which people experience syncope, military barracks can be named where training soldiers spend their military courses. The current study aimed to assess etiology and risk factors of syncope among military training soldiers.METHODS: This was a retrospective case-control study conducted on training soldiers of Army-۵۰۱ hospital in Tehran, Iran, during the years ۲۰۱۷-۲۰۱۸. Cases were consisted of ۵۰ soldiers who experienced syncope during military training, and controls were ۱۵۰ soldiers who had not experienced syncope during their military training. Demographic data were recorded for cases and controls.RESULTS: Members of case and control groups were not statistically different regarding age (P = ۰.۴۶) and height (P = ۰.۷۰). Logistic regression test was performed and considering crude model, weight [odds ratio (OR): ۰.۹۴; ۹۵% of confidence interval (۹۵%CI): ۰.۹۰-۰.۹۸], body mass index (BMI) (OR: ۰.۷۲; ۹۵%CI: ۰.۶۱-۰.۸۵), standing duration (OR: ۱.۰۰۷; ۹۵%CI: ۱.۰۰-۱.۰۱), history of syncope (OR: ۱۵.۴۷; ۹۵%CI: ۴.۱۵-۵۷.۶۰), positive family history of syncope (OR: ۵.۹۴; ۹۵%CI: ۱.۶۶-۲۱.۲۵), smoking (OR: ۳.۵; ۹۵%CI: ۱.۵۴-۷.۹۱), medical problems (OR: ۷.۹۷; ۹۵%CI: ۱.۹۸-۳۲.۱۷), anxiety (OR: ۲.۰۲; ۹۵%CI: ۱.۱۳-۴.۲۶), stress (OR: ۶.۶۸; ۹۵%CI: ۳.۲۸-۱۳.۵۷), and depression (OR: ۴.۲۵; ۹۵%CI: ۲.۱۵-۸.۳۹) were detected as significant predictors of syncope occurrence.CONCLUSION: Based on the findings of this study, lower BMI, positive history of syncope, smoking, depression, and stress were significant risk factors of syncope occurrence among training soldiers. Higher BMI has protective role in syncope occurrence.

Syncope, Risk Factors, Case-Control Studies, Military Personnel