Abstract P104: Socio-Emotional Stressors Increase Ventilation Rate During Advanced Cardial Life Support in a Manikin Model
BACKGROUND: Studies suggest that trained medical personnel deliver manual ventilations at excessive rates while performing advanced cardiac life support (ACLS). Excessive ventilation rates may contribute to increased mortality among these patients. We seek to uncover the root causes of hyperventilation during ACLS.
HYPOTHESIS: We hypothesized that the presence of socio-emotional stressors would increase the ventilation rate during simulated cardiac arrest in a manikin model.
METHOD: A within-subject study involved two conditions presented in randomized order. Ten students at the University of Oslo participated in the study. In one condition all participants ventilated a standard intubated manikin while being alone in the room. Another condition involved in addition the presence of six more people and a telephone conversation with a simulated 911 dispatcher. All participants were instructed to ventilate the manikin ten times per minute in both conditions. Ventilation rate was measured by the interval between the initiation of each ventilation event (Inter-Response-Interval; IRI).
RESULTS: The participants had a higher ventilation rate during exposure to socio-emotional stressors (Mean IRI = 5.55, SD =2.57) than during the alone condition (Mean IRI = 7.28, SD = 2.51; t(9) = −3.205, 95% CI −2.95, −.51; Cohen’s d = 1.04; p = .011). Five participants ventilated much faster than the recommended rate of 10 bpm during the socio-emotional scenario (range 11.5–22 bpm for these four people). Only two persons ventilated faster than the recommended rate of 10 bpm in the alone condition.
CONCLUSIONS: Socio-emotional pressure increases ventilation rate during advanced cardiac life support in a manikin model. This may have consequences for the organization and training of ACLS providers.