Effects of socio-emotional stressors on ventilation rate and subjective workload during simulated CPR by lay rescuers

Several studies have documented the occurrence of high ventilation rates during cardiopulmonary resuscitation, but to date, there have been no scientific investigation of the causes of hyperventilation. The objective of the current study was to test the effects of socio-emotional stressors on lay re...

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Bibliographic Details
Published in:Applied ergonomics 2012-07, Vol.43 (4), p.799-802
Main Authors: Bjørkli, Cato A., Øvergård, Kjell I., Bjørshol, Conrad Arnfinn, Myklebust, Helge, Hoff, Thomas
Format: Article
Language:English
Subjects:
Adult
Applied physiology
Biological and medical sciences
Cardiopulmonary Resuscitation
Communication
Emergency services
Emotions
Ergonomics
Ergonomics. Work place. Occupational physiology
Female
Human physiology applied to population studies and life conditions. Human ecophysiology
Humans
Hyperventilation
Hyperventilation - etiology
Hyperventilation - prevention & control
Male
Medical sciences
Occupational stress
Physical Exertion
Respiration, Artificial
Simulated CPR
Socio-emotional stressors
Stress, Psychological - psychology
Subjective workload
Workload - psychology
Workloads
Young Adult
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Summary:Several studies have documented the occurrence of high ventilation rates during cardiopulmonary resuscitation, but to date, there have been no scientific investigation of the causes of hyperventilation. The objective of the current study was to test the effects of socio-emotional stressors on lay rescuers’ ventilation rate in a simulated resuscitation setting using a manikin model. A within-subjects experiment with randomized order of conditions tested lay rescuers’ ventilation rate on an intubated manikin during exposure to socio-emotional stressors and during a control condition where no external stressors were present. Ventilation rates and subjective workload were significantly higher during exposure to socio-emotional stressors than during the control condition. All but one of the nine participants ventilated at a higher ventilation rate in the experimental condition. All nine participants rated the subjective workload to be higher during exposure to socio-emotional stressors. Hence, exposure to socio-emotional stressors is associated with increased ventilation rates performed by lay rescuers during simulated cardiac arrest using a manikin model. These findings might have implications for the understanding of the type of situations which hyperventilation may occur. Awareness of these situations may have implications for training of lay rescues. ► Previous studies have found that rescuers deviate from medical guidelines in a resuscitation situation. ► This study investigated how socio emotional stress affect performance on a ventilation task in a resuscitation situation. ► The study shows that socio emotional stress is associated with high rates of ventilation that exceeds medical guidelines. ► Possible implications for training are discussed.
ISSN:0003-6870
1872-9126
DOI:10.1016/j.apergo.2011.11.015