Outcome in survivors of out-of-hospital cardiac arrest in a tertiary care center of North India: A prospective observational study

Abstract

Background: OHCA (out of hospital cardiac arrest) is a leading cause of death in developed countries, outcome of which depends upon various factors. Not much data is available in India, on outcome of OHCA. Thus, this study was conducted to assess various clinical and biochemical parameters in predicting outcome of survivors of out of hospital cardiac arrest. Methods: This prospective study was done in HDHI Unit of DMCH, Ludhiana over a period of 12 months (January, 2016 to December 2016). Patients of OHCA who were revived following CPR were enrolled for the study and outcome in terms of GCPS and NYHA was seen after one month. Results: A total of 542 patients of OHCA presented to the emergency, of which 49 (9.04%) patients were admitted after ROSC following CPR. Of these 49 patients, 18 (36.73%) survived to hospital discharge and 31 (63.26%) expired or took discharge in a critical condition and presumed to be expired. Mean age of patients was 58.06 ± 15.1 years and males constituted 67.35%. Mean time from arrest to hospital was 7.44 ± 6.9 minutes (survivors) compared to 13.23 ± 8.1 minutes (non survivors) (P value = 0.009). Mean duration of stay was more among discharged (P = 0.006). Patients presenting with VF/VT (P = 0.003) as first monitored rhythm compared to asystole (P = 0.004) had better outcome. On multivariate analysis VF, duration of hospital stay, raised urea and creatinine, time from arrest to first help and hospital were predictors of good outcome. Conclusion: Shorter time interval from arrest to reaching the hospital and shockable rhythm were associated with better outcome in patients of OHCA. Duration of CPR (cardiopulmonary resuscitation), age, gender, comorbidities, witnessed arrest and resuscitation attempt by bystander (bystander CPR) did not show any relation in predicting outcome in out of hospital cardiac arrest survivors. Raised urea and creatinine (correctable biochemical parameters) played a significant role in survival was cardiac arrest on way to hospital.