Potential association of bystander–patient relationship with bystander response and patient survival in daytime out-of-hospital cardiac arrest. (January 2015)

• Record Type: Journal Article
• Authors: Tanaka, Yoshio; Maeda, Tetsuo; Kamikura, Takahisa; Nishi, Taiki; Omi, Wataru; Hashimoto, Masaaki; Sakagami, Satoru; Inaba, Hideo
• Is Part Of: Resuscitation. Volume 86(2015)
• Page Start: 74
• Page End: 81
• Publication Date: 2015-01
• Subjects: Cardiopulmonary resuscitation -- Out-of-hospital cardiac arrest -- Patient survival -- Bystander–patient relationship -- Time of day; Resuscitation -- Periodicals; Resuscitation -- Periodicals; Réanimation -- Périodiques; Electronic journals; 616.025
• DOI: 10.1016/j.resuscitation.2014.11.004
• Languages: English
• ISSNs: 0300-9572

Abstract

Abstract: Aim: To investigate whether the bystander–patient relationship affects bystander response to out-of-hospital cardiac arrest (OHCA) and patient outcomes depending on the time of day. Methods: This population-based observational study in Japan involving 139, 265 bystander-witnessed OHCAs (90, 426 family members, 10, 479 friends/colleagues, and 38, 360 others) without prehospital physician involvement was conducted from 2005 to 2009. Factors associated with better bystander response [early emergency call and bystander cardiopulmonary resuscitation (BCPR)] and 1-month neurologically favourable survival were assessed. Results: The rates of dispatcher-assisted CPR during daytime (7:00–18:59) and nighttime (19:00–6:59) were highest in family members (45.6% and 46.1%, respectively, for family members; 28.7% and 29.2%, respectively, for friends/colleagues; and 28.1% and 25.3%, respectively, for others). However, the BCPR rates were lowest in family members (35.5% and 37.8%, respectively, for family members; 43.7% and 37.8%, respectively, for friends/colleagues; and 59.3% and 50.0%, respectively, for others). Large delays (≥5 min) in placing emergency calls and initiating BCPR were most frequent in family members. The overall survival rate was lowest (2.7%) for family members and highest (9.1%) for friends/colleagues during daytime. Logistic regression analysis revealed that the effect of bystander relationship on survival was significant only during daytime [adjusted odds ratios (95% CI) for survival from daytime OHCAs with family as reference were 1.51 (1.36–1.68) for friends/colleagues and 1.23 (1.13–1.34) for others]. Conclusions: Family members are least likely to perform BCPR and OHCAs witnessed by family members are least likely to survive during daytime. Different strategies are required for family-witnessed OHCAs.