Cardiopulmonary resuscitation duration and patient survival in a South Indian intensive care unit

Table 1 Baseline characteristics of the study population

Characteristic	n (%)
Age (years)
mean ± SD	62.3 (15.2)
Sex
Male	87 (61.3)
Female	55 (38.7)
Comorbidities
Hypertension	83 (58.5)
Diabetes mellitus	60 (42.3)
Coronary artery disease	45 (31.7)
Chronic kidney disease	28 (19.7)
Chronic obstructive pulmonary disease	22 (15.5)

Table 2 Survival outcomes stratified by return of spontaneous circulation achievement, n (%)

Outcome	ROSC achieved early (n = 68)	ROSC not achieved early (n = 74)	P value
Survival to ICU discharge	35 (51.5)	9 (11.8)	< 0.001
In-hospital mortality	33 (48.5)	65 (88.2)	< 0.001
6-month survival	19 (27.9)	13 (17.6)	0.042

CPR: Cardiopulmonary resuscitation; ICU: Intensive care unit; ROSC: Return of spontaneous circulation.

Table 3 Multivariate Cox regression analysis of mortality predictors

Predictor	HR	95%CI	P value
CPR duration (per minute)	1.05	1.02-1.08	0.002
Absence of early ROSC	4.87	2.31-10.28	0.001
Age (per year)	1.03	1.01-1.06	0.008
Chronic kidney disease	2.15	1.12-4.13	0.021
Unwitnessed arrest	1.89	1.05-3.41	0.034

HR: Hazard ratio; CPR: Cardiopulmonary resuscitation; ROSC: Return of spontaneous circulation.