Abstract P138: Influence of Body Mass Index on Outcome in Cardiac Arrest Survivors
Introduction Body Mass Index may influence quality of CPR and is an independent risk factor for intensive care unit death. To review the direct effect of obesity on outcome after cardiac arrest the following retrospective analysis was conducted.
Methods This study based on a cardiac arrest registry comprising all adult patients with cardiac arrest of any origin and restoration of spontaneous circulation (ROSC) admitted to the Department of Emergency Medicine of a tertiary-care facility between January 1992 and December 2007. We assessed the association between body mass index (BMI) according to the WHO-classification (Group 1=BMI 29.99) and 6-month survival. Data were collected according to the Utstein criteria.
Results A total of 2.109 patients (33% female) comprised this analysis with a median age of 59 years (IQR 50 to 71) and a median BMI of 26.03 (IQR 23.63 to 29.05). Cardiac arrest was witnessed in 2.045 patients (97%), bystander CPR was documented in 461 cases (22%). Initial VF or VT was observed in 1.222 cases (58%), median time from cardiac arrest until ROSC was 15 minutes (IQR 4 to 26). Therapeutic hypothermia was applied in 525 patients (25%). The median follow-up-time was 100 days (IQR 2 to 180). Overall 6-month survival was 47.2% with no significant difference between the BMI-groups (Group 1=38.8%, Group 2=44.4%, Group 3=49.7%, Group 4=48.9%).
Conclusion Body mass index may have no direct influence on 6-month survival after cardiac arrest.