• Drago Rakić, Zvonko Rumboldt, Vedran Carević, Jugoslav Bagatin, Stojan Polić, Nediljko Pivac, Ruzica Avelini-Perković, and Approach to Sudden Cardiac Death Study Investigators.
• Department of Internal Medicine, Split University Hospital, Vjekoslava Spincica 1, 21000 Split, Croatia. drakic@kbsplit.hr
• Croat. Med. J. 2005 Dec 1;46(6):907-12.

AimTo assess the frequency of cardiac arrest and outcomes and predictors of survival after cardiopulmonary resuscitation in hospitalized patients.MethodsWe prospectively analyzed the data on all patients who experienced cardiac arrest while hospitalized at the Split University Hospital between January and December 2003. Data were collected on patients' demographic characteristics, etiology and presentation of cardiac arrest, time, site, methods, and outcomes of cardiopulmonary resuscitation.ResultsOut of 120 cases of cardiac arrest among 32,861 hospitalized patients, 76.7% were witnessed. Ninety-six (80.0%) patients with cardiac arrest underwent resuscitation, and 22.5% of them were discharged alive. The survival rate was 20.0% at the Department of Internal Medicine, 29.2% in the Coronary Care Unit, and only 7.1% in other departments (P=0.058, chi2 test). Out of 92 patients with witnessed cardiac arrest, 28.3% survived to discharge, whereas only one of 28 patient with unwitnessed cardiac arrest survived to discharge (P=0.004, Fisher's exact test). More patients with cardiac arrest due to ventricular fibrillation or pulseless ventricular tachycardia survived than patients with asystole and pulseless electrical activity (47.6% vs 10.7%, respectively, P<0.001, Fisher's exact test). None of the patients with unclassified cardiac arrest survived until discharge. Cardiac arrest survivors were significantly younger (60.8+/-12.9 vs 71.1+/-11.7 years, P<0.001, Student t-test). Sex had no influence on survival. There were no significant circadian or hospital shift differences in the frequency rate of cardiac arrest, but the rate of successful resuscitation was lower during the night shift.ConclusionThe rate of successful resuscitation was higher in the coronary care unit, during the day and in younger witnessed cardiac arrest patients with ventricular fibrillation or pulseless ventricular tachycardia.

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