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Table 2 Quality of cardiopulmonary resuscitation (CPR)

From: Quality of cardiopulmonary resuscitation in out-of-hospital cardiac arrest before and after introduction of a mechanical chest compression device, LUCAS-2; a prospective, observational study

CPR variables

Manual CPR

LUCAS CPR

P-value

 

n = 155

n = 155

 

Episode duration, min.

5 (2; 6)

13 (11; 14)

<0.001

No-flow fraction, %

35 (33; 37)

16 (15; 18)

<0.001

Chest compression rate per minute

124 (121; 126)

102 (102; 102)

<0.001

Number of chest compressions per minute

75 (72; 79)

84 (82; 85)

<0.001

  1. No-flow time = Time without ROSC – time without chest compressions.
  2. No-flow fraction = No-flow time/(episode duration – time with ROSC). ROSC = Return of spontaneous circulation.
  3. CPR variables are presented as mean values (95% CI).