A COMPARISON BETWEEN THE 2010 AND 2005 BASIC LIFE SUPPORT GUIDELINES DURING SIMULATED MICROGRAVITY

INTRODUCTION: 2010 terrestrial (1 Gz) CPR algorithm increased external chest compression (ECQ depth from 2005 guidelines to at least 50 mm and has been advocated by space agencies for the microgravity environment, but may not be feasible. The purpose of this study was to evaluate male performance ov...

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Bibliographic Details
Published in:Aviation, space, and environmental medicine space, and environmental medicine, 2013-04, Vol.84 (4), p.313c-3314
Main Authors: Baers, J, Ashcroft, A, Velho, R, Rehnberg, L, Baptista, R, Russomano, T
Format: Article
Language:English
Subjects:
Algorithms
Computer simulation
Devices
Elbows
Guidelines
Males
Mannequins
Microgravity
Online Access:Get full text
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Summary:INTRODUCTION: 2010 terrestrial (1 Gz) CPR algorithm increased external chest compression (ECQ depth from 2005 guidelines to at least 50 mm and has been advocated by space agencies for the microgravity environment, but may not be feasible. The purpose of this study was to evaluate male performance over 1.5 min of ECCs during simulated microgravity (uG) relative to 1 Gz and rest baseline, and to compare male physiological costs of conducting ECCs during simulated uG in accordance with the 2010 and 2005 CPR guidelines. METHODS: 30 healthy male volunteers (17-30years) performed 4 cycles of 30 ECCs, with 6s between sets for ventilation, on a CPR mannequin (Resusci Anne Skill Reporter, Laerdal Medical Ltd). ECC depth and rate, range of elbow flexion, heart rate (HR), VE, V02peak and rate of perceived exertion (RPE) were measured pre and post CPR. Simulated uG (Evetts-Rus-somano method; ER) was achieved via a body suspension device. RESULTS: All volunteers completed the study. Mean ECC rate was achieved for IGz and simulated uG. Depth considering inadequate recoil during simulated uG was not sufficient for 2005 (28.5 plus or minus 7.0 mm) and 2010 (32.9 plus or minus 8.7 mm) guidelines, even with a mean range of elbow flexion of 15 degree . Physiological variables increased during simulated pG, but showed no inter-guideline difference. RPE was the only variable to increase with 2010 guidelines. DISCUSSION: The physiological demand of CPR (V02peak, HR and RPE) was greater during simulated uG. Effective ECCs were not achievable for both guidelines in simulated pG using the ER BLS method. This suggests that future implementation of an ER BLS in simulated pG instruction program, as well as upper arm strength training, are required to perform effective BLS in space.
ISSN:0095-6562