Related Experiment Video
Updated: Mar 21, 2026

Ultrasonographic Assessment During Cardiopulmonary Resuscitation
Published on: October 24, 2020
Investigation of low back and shoulder demand during cardiopulmonary resuscitation
R Scott Dainty1, Diane E Gregory2
1Department of Kinesiology and Physical Education, Wilfrid Laurier University, 75 University Ave West, Waterloo, Ontario N2L 3C5, Canada.
Abstract:
Limited research has examined the effect of different compression-ventilation ratios on the ergonomic demand of performing cardiopulmonary resuscitation (CPR) over time. This study aimed to compare the biomechanical demand of performing continuous chest compression CPR (CCC-CPR) and standard CPR (30:2 compression to breath ratio). Fifteen CPR certified individuals performed both standard CPR and CCC-CPR, randomly assigned, for three 2-min periods. Trunk and upper limb muscle activation, lumbar spine posture and compression force applied to a testing mannequin chest were measured throughout each CPR trial. No differences in muscle activation of spine posture were observed, however chest compression force decreased over the two minutes (p < 0.0001). Further, this drop in force was larger and initiated immediately during the CCC-CPR trials. This immediate drop in force during the CCC-CPR trials may be an anticipatory adjustment in order to be able to sustain continuous compressions for the full 2 min duration.
Related Concept Videos
Cardiopulmonary Resuscitation I: Adult
Cardiopulmonary Resuscitation II: ACLS Airway Management
Assessment of Respiration
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
Cardiopulmonary Resuscitation III: AED Use
Assessment of Airway, Skin Color, and Use of Accessory Muscles
Introduction
The initial evaluation of a patient's respiratory system...
Cardiopulmonary Resuscitation IV: Pharmacological Management

