Abstract 215: Does the Relation of CPR Performer to Victim Affect Survival of Out-of-Hospital Cardiac Arrest?

Abstract

Backgrounds and Aim Early cardiopulmonary resuscitation (CPR) with a considerable quality is essential for survival of out-of-hospital cardiac arrests (OHCAs). The present study was conducted to test our hypothesis that relation of CPR performer to cardiac arrest victim may affect the survival of out-of-hospital cardiac arrests (OHCAs). Methods Data from 2068 OHCAs with CPR before emergency medical technician arrival, that occurred at other locations than care facilities from April, 2003 to March, 2010 in Ishikawa prefecture, were prospectively collected and analyzed. The performers of CPR were categorized into 4 groups; family and relatives, friends, strangers and healthcare providers. The backgrounds, characteristics and outcomes of OHCAs were compared among the 4 groups and between family and other 3 or 2 groups. Results (see Table) Family and relatives were less frequently the CPR performers in witnessed OHCAs, and were more frequently the CPR performers in OHCAs that occurred at home. They more frequently initiate the CPR following telephone-CPR and perform chest compression-only CPR. When analyzed collectively for all OHCAs, family member or relative as a CPR performer was associated with poor outcomes. When analyzed for subgroups of OHCAs, the effects of relations to victim were significant only for unwitnessed OHCAs and the OHCAs that occurred at other locations than home. Critical time factors related to survival did not significantly differ among or between the groups. Multiple logistic regression analysis for OHCAs that occurred at other locations than home, but not for all OHCAs, disclosed that family member or relative as a CPR performer is an independent factor associated with 1-Y survival. Conclusions The relations to victims dependently affect the outcomes of OHCAs. Although the quality of CPR was not determined in this study, this observation should be considered to plan a better strategy for improving the quality of CPR and outcomes of OHCAs.