• Anouk P van Alem, Reinier A Waalewijn, Rudolph W Koster, and Rien de Vos.
• Department of Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands. a.p.vanalem@amc.uva.nl
• Am. J. Cardiol. 2004 Jan 15;93(2):131-5.

AbstractThis prospective cohort study evaluated the impact of the time-related elements of the "chain of survival" on the quality of life of patients, taking their characteristics into account. Between 1995 and 2002, consecutive, out-of-hospital cardiac arrest patients from Amsterdam and the surrounding areas were included in this study. A total of 227 patients (12%) survived to hospital discharge and 174 were definitive survivors who were available for assessment at 6 months. Quality of life was measured with the 136-item Sickness Impact Profile (SIP); cognitive functioning was assessed through the Mini Mental State Examination. SIP profiles were compared with profiles of an open Dutch population of the elderly and patients who experienced a stroke. Time intervals of the chain of survival were calculated from the estimated moment of collapse and related to outcome using regression analysis. The SIP profile of survivors was a little above the reference profile, indicating a slightly poorer quality of life, and below the profile of patients after stroke, indicating a better quality of life. Impaired cognitive function was associated with delay in the start of cardiopulmonary resuscitation (odds ratio 4.3, 95% confidence interval 1.0 to 19). Absence of the need for advanced cardiopulmonary life support was associated with better cognitive functioning (odds ratio 0.3, 95% confidence interval 0.1 to 0.9). Female gender and older age were associated with impaired physical functioning. Trends were found for better outcomes after early access, immediate resuscitation, early defibrillation, and early advanced care.

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