Objective:This study was aimed to explore factors associated with short term survival from CPR among older patients in a middle-income country.

Materials and Methods:The author retrospectively reviewed data of all patients aged 60 years and older who presented to our emergency department (ED) after an out-of-hospital cardiac arrest (OHCA) during 2010 to 2017.Data collection was done using Utstein-Style Guidelines for uniform reporting of data by trained research assistants.

The primary outcome was to determine the success rate of CPR and factors associated with 7-days survival in OHCA among older patients. Data was calculated using appropriate statistical analysis. Overall survival from each factor were presented by median survival time, which analyzed in to hazard ratio.

Results:We had 308 patients in our study. One hundred and sixty-five patients (53.6%) were female, with a mean age of 74.78 ±9.50 years. An average CPR time was 26.75±16.64 minutes and average time to return of spontaneous circulation (ROSC) was 17.56±12.95 minutes. A total of 163(52.9%) achieved ROSC and 88 (28.6%) patients were survived to hospital admission. Overall median survival time was 7 days.

In multivariable analysis model, patients with first recorded ECG as asystole (HRadj 1.53 95%CI 1.18-1.98) and those required time to ROSC more than 12 minutes (HRadj 3.21 95%CI 2.98-4.74) decreased a chance of survival.

Conclusion:Half of the older patients had ROSC and almost one third survived to hospital admission. Asystole and time to ROSC> 12minutes decreased a chance of 7 days survival among older adults. Our study may give some idea in crucial decision-making for out of hospital cardiac arrest among older adults.