Figure 3
Development of chest compression rate. Development of chest compression rate for each of 19 resuscitation attempts, the good are illustrated in A (6/19, 32%), the bad in B (6/19, 32%) and those with decay in C (7/19, 37%). Arrows indicate when each paramedic developed decay in chest compression rate to < 100 or > 120 per minute. See text for definition of groups.