Long-term outcome of bystander-witnessed out-of-hospital cardiac arrest in Estonia from 1999 to 2002.

Objective: To assess the long-term outcome of bystander-witnessed out-of-hospital cardiac arrest victims in Estonia by using the survival rate and quality of life assay.

Methods: All resuscitation attempts made from 01.01.1999 to 31.12.2002 in Estonia were retrospectively screened for bystander-witnessed adult out-of-hospital cardiac arrests of cardiac origin. The patients who survived hospital discharge were included in the study. Their long-term survival data were retrieved from Estonian Population Registry on March 15, 2004. Quality of life was assessed by RAND-36 questionnaire. Comparisons were made with population norms, and patients suffering from myocardial infarction or angina pectoris.

Results: 854 bystander-witnessed resuscitation attempts were made in four years. 91 patients (10.7%) survived to hospital discharge. Their one-year survival rate was 77.0% and five-year survival rate 64.3%. 44 patients responded to quality of life questionnaire, sent 16-62 months after out-of-hospital cardiac arrest (response rate 77.2%). Respondents rated their quality of life significantly worse than general population in five out of eight categories. The out-of-hospital cardiac arrest survivors with known cardiovascular disease in history (n=30) had quality of life similar to patients suffering from myocardial infarction or angina pectoris who had not required resuscitation.

Conclusion: In Estonia majority of bystander-witnessed out-of-hospital cardiac arrest victims who survive hospital discharge are alive one and also more than three years after resuscitation. Their quality of life is worse than that of general population.