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Table 5 Probability of survival to hospital discharge and duration of cardiopulmonary resuscitation for different patient groups according to the regression model

From: Monitoring of serum lactate level during cardiopulmonary resuscitation in adult in-hospital cardiac arrest

Patient groups divided by variables identified in the regression model Probability of survival to hospital discharge when CPR was performed for 30 minutes Duration of CPR when probability of survival to hospital discharge decreased to 18 % (minutes) Duration of CPR when probability of survival to hospital discharge was half the initial probability (minutes)
Group 1: shockable rhythm (+), lactate level <9 mmol/L (+), hepatic insufficiency (−) 23 % 32.3 21.7
Group 2: shockable rhythm (+), lactate level <9 mmol/L (−), hepatic insufficiency (−) 13 % 22.2 17.4
Group 3: shockable rhythm (−), lactate level <9 mmol/L (+), hepatic insufficiency (−) 10 % 17.9 16.0
Group 4: shockable rhythm (+), lactate level < 9 mmol/L (+), hepatic insufficiency (+) 8 % 14.3 15.1
Group 5: shockable rhythm (−), lactate level < 9 mmol/L (−), hepatic insufficiency (−) 5 % 7.8 13.8
Group 6: shockable rhythm (+), lactate level <9 mmol/L (−), hepatic insufficiency (+) 4 % 4.2 13.2
Group 7: shockable rhythm (−), lactate level <9 mmol/L (+), hepatic insufficiency (+) 3 % NA 12.7
Group 8: shockable rhythm (−), lactate level <9 mmol/l (−), hepatic insufficiency (+) 2 % NA 12.0
  1. CPR cardiopulmonary resuscitation, NA not available (because the probabilities of survival to hospital discharge for group 7 and 8 were below 18 % from the start of CPR)