Journal of the Medical Association of Thailand Vol 93, No 12:DECEMBER 2010 (SUPPL.7) 0125-2208 93 12 2010 Dec Evaluation of Related Factors and the Outcome in Cardiac Arrest Resuscitation at Thammasat Emergency Department 26 EN Kumpol Amnuaypattanapon Umaporn Udomsubpayakul Original Article In the present study, we aimed to define the factors contributing to patient survival after treatment by cardiopulmonaryresuscitation (CPR) following cardiac arrest. Retrospective analysis was performed on cardiac arrest patients (n = 138) who had CPR in theemergency department (ED) at Thammasat University hospital from 2007-2009. Logistic regression was used to analyzefactors that related to the sustained return of spontaneous circulation (ROSC) for 20 minutes, survival until discharge, andsurvival up to 1 month post discharge. The sustained ROSC was 22.5%, survival to discharge 5.6%, and survival from discharge to 1 month 3.6%.Significant factors related to sustained ROSC was the location of cardiac arrest, the cause of arrest, shockable rhythm withdefibrillation, the time until chest compression, and CPR duration. The factor influencing survival to discharge was chestcompression performed within 15 minutes after cardiac arrest (p = 0.048). No factor however could be attributed tosurvivability up to 1 month following discharge. Our findings attribute six factors associated to ROSC including the location of arrest, the cause of cardiacarrest, initial cardiac rhythm, shockable rhythm with defibrillation, the time until chest compression and CPR duration.Statistically, resuscitation performed within 15 minutes of cardiac arrest increases the survivability of patients until discharge.However, no factors could be related to the percentage of patients surviving up to 1 month post discharge. Cardiopulmonary resuscitation Outcomes Factors