Temporal trends in bystander cardiopulmonary resuscitation and favourable neurological outcome among older patients with out-of-hospital cardiac arrest stratified by bystander-patient relationship and age: a JCS-ReSS study.
6 affiliations
- 1Department of Cardiology, Osaka Saiseikai Senri Hospital, 1-1-6 Tsukumodai, Suita, Osaka 565-0862, Japan.
- 2Department of Cardiology, Kanazawa University Graduate School of Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa 920-8641, Japan.
- 3Department of Emergency and Critical Care Center, Noto General Hospital, 6-4 A-bu, Fujihashi-machi, Nanao, Ishikawa 926-0816, Japan.
- 4Department of Biostatistics, School of Medicine, University of Toyama, 2630 Sugitani, Toyama, Toyama 930-0194, Japan.
- 5Department of Cardiovascular Medicine, Kyushu University, 3-1-1 Maidashi, Higasi-Ku, Fukuoka, Fukuoka 812-8582, Japan.
- 6Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-shinmachi, Suita, Osaka 564-8565, Japan.
Abstract
Aim
To describe temporal trends in bystander cardiopulmonary resuscitation (CPR) and favourable neurological outcomes among older patients with bystander-witnessed out-of-hospital cardiac arrest (OHCA) according to bystander-patient relationship and age.Methods
A total of 322,943 patients aged ≥65 years with bystander-witnessed OHCA of cardiac origin were enrolled from the All-Japan Utstein Registry (2005-2022). Patients were stratified by age (65-74, 75-89, and ≥90 years) and bystander type (family member, friend/colleague/passerby, or other). Temporal trends in the proportions of bystander CPR and favourable neurological outcome at 1-month, defined as Cerebral Performance Category (CPC) 1-2, were assessed using the Cochran-Armitage test.Results
During the study period, the annual proportions of bystander CPR and CPC 1-2 in family member-witnessed OHCAs significantly increased across all age groups (all p for trend <0.001). However, bystander CPR remained at approximately 50% in all age groups. In other-witnessed OHCAs, bystander CPR also significantly increased across all age groups (all p for trend <0.001). However, CPC 1-2 significantly increased only in those aged 65-74 years (p for trend <0.05), with no significant temporal trend in older groups. Among those aged ≥90 years, bystander CPR increased to approximately 80%, whereas CPC 1-2 remained at approximately 1%, with no significant temporal trend.Conclusions
Temporal trends in bystander CPR and CPC 1-2 varied according to bystander-patient relationship and age. Further investigation is warranted to identify the factors underlying the observed differences in bystander CPR and favourable neurological outcomes.
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BibTeX
@article{funada2026temporal,
title = {{Temporal trends in bystander cardiopulmonary resuscitation and favourable neurological outcome among older patients with out-of-hospital cardiac arrest stratified by bystander-patient relationship and age: a JCS-ReSS study.}},
author = {Akira Funada and Yoshikazu Goto and Masayuki Takamura and Naohiro Yonemoto and Tetsuya Matoba and Yoshio Tahara},
journal = {Resuscitation plus},
year = {2026},
month = oct,
doi = {10.1016/j.resplu.2026.101525},
url = {https://europepmc.org/article/MED/42927342},
note = {CC BY},
}
RIS
TY - JOUR
TI - Temporal trends in bystander cardiopulmonary resuscitation and favourable neurological outcome among older patients with out-of-hospital cardiac arrest stratified by bystander-patient relationship and age: a JCS-ReSS study.
AU - Akira Funada
AU - Yoshikazu Goto
AU - Masayuki Takamura
AU - Naohiro Yonemoto
AU - Tetsuya Matoba
AU - Yoshio Tahara
PY - 2026
DA - 2026/10/07
JO - Resuscitation plus
DO - 10.1016/j.resplu.2026.101525
UR - https://europepmc.org/article/MED/42927342
AB - Aim To describe temporal trends in bystander cardiopulmonary resuscitation (CPR) and favourable neurological outcomes among older patients with bystander-witnessed out-of-hospital cardiac arrest (OHCA) according to bystander-patient relationship and age.Methods A total of 322,943 patients aged ≥65 years with bystander-witnessed OHCA of cardiac origin were enrolled from the All-Japan Utstein Registry (2005-2022). Patients were stratified by age (65-74, 75-89, and ≥90 years) and bystander type (family member, friend/colleague/passerby, or other). Temporal trends in the proportions of bystander CPR and favourable neurological outcome at 1-month, defined as Cerebral Performance Category (CPC) 1-2, were assessed using the Cochran-Armitage test.Results During the study period, the annual proportions of bystander CPR and CPC 1-2 in family member-witnessed OHCAs significantly increased across all age groups (all p for trend <0.001). However, bystander CPR remained at approximately 50% in all age groups. In other-witnessed OHCAs, bystander CPR also significantly increased across all age groups (all p for trend <0.001). However, CPC 1-2 significantly increased only in those aged 65-74 years (p for trend <0.05), with no significant temporal trend in older groups. Among those aged ≥90 years, bystander CPR increased to approximately 80%, whereas CPC 1-2 remained at approximately 1%, with no significant temporal trend.Conclusions Temporal trends in bystander CPR and CPC 1-2 varied according to bystander-patient relationship and age. Further investigation is warranted to identify the factors underlying the observed differences in bystander CPR and favourable neurological outcomes.
SN - 2666-5204
ER -