PO-05-137 ECG MORPHOLOGY IS A DETERMINANT OF SURVIVAL IN PULSELESS ELECTRICAL ACTIVITY

Sudden cardiac arrest (SCA) due to pulseless electrical activity (PEA) has a poor prognosis and identification of cases with higher likelihood survival could facilitate the resuscitation process. In PEA, QRS frequency morphology can vary significantly. To investigate if predict outcomes in PEA. The study population is drawn from two prospective, community-based studies out-of-hospital SCA U.S.: Oregon SUDS Portland, OR metro area (Pop. approx. 1 million; since 2002) Ventura PRESTO County CA 850,000, 2015). present study, we included resuscitated by EMS that had recording ECG available, PEA was presenting rhythm. We analyzed frequency, regularity, width rhythm subset 347 PEA-SCA (34 survivors 313 non-survivors). mean age subjects 70.3±15.5 years 60.2% were male. prevalence >60 bpm 23.1% <120 ms 32.6%. Females more likely have narrow complex than males (39.9% vs. 27.8%; p=0.02) but there no sex difference frequency. Those rate those <60 (17.5% 7.5%: p=0.02). addition, comparison >120 (17.7% 6.0%; p=0.001). Cases both (<120 ms) fast (>60 bpm) highest (10/38, 26.3%). There between regular irregular rhythms. PEAs associated survival. These results suggest efforts are most be beneficial pattern.