A new method for the performance of external chest compressions during hypogravity simulation.
Life Sci Space Res (Amst)
; 18: 72-79, 2018 Aug.
Article
em En
| MEDLINE
| ID: mdl-30100150
ABSTRACT
INTRODUCTION:
2015 UK resuscitation guidelines aim for 50-60â¯mm depth when giving external chest compressions (ECCs). This is achievable in hypogravity if the rescuer flexes and extends their arms during CPR, or using a new method trialed; the 'Mackaill-Russomano' (MR CPR) method.METHODS:
10 participants performed 3 sets of 30 ECCs in accordance with 2015 guidelines. A control was used at 1Gz, with eight further conditions using Mars and Moon simulations, with and without braces in the terrestrial position and using the MR CPR method. The MR CPR method involved straddling the mannequin, using its legs for stabilization. A body suspension device, with counterweights, simulated hypogravity environments. ECC depth, rate, angle of arm flexion and heart rate (HR) were measured.RESULTS:
Participants completed all conditions, and ECC rate was achieved throughout. Mean (±â¯SD) ECC depth using the MR CPR method at 0.38Gz was 54.1⯱â¯0.55â¯mm with braces; 50.5⯱â¯1.7â¯mm without. ECCs were below 50â¯mm at 0.17Gz using the MR CPR method (47.5⯱â¯1.47â¯mm with braces; 47.4⯱â¯0.87â¯mm without). In the terrestrial position, ECCs were more effective without braces (49.4⯱â¯0.26â¯mm at 0.38Gz; 43.9⯱â¯0.87â¯mm at 0.17Gz) than with braces (48.5⯱â¯0.28â¯mm at 0.38Gz; 42.4⯱â¯0.3â¯mm at 0.17Gz). Flexion increased from approximately 2° - 8° with and without braces respectively. HR did not change significantly from control.DISCUSSION:
2015 guidelines were achieved using the MR CPR method at 0.38Gz, with no significant difference with and without braces. Participants were closer to achieving the required ECC depth in the terrestrial position without braces. ECC depth was not achieved at 0.17Gz, due to a greater reduction in effective body weight.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Reanimação Cardiopulmonar
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Simulação de Ausência de Peso
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Hipogravidade
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Medicina Aeroespacial
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Massagem Cardíaca
Tipo de estudo:
Qualitative_research
Limite:
Adult
/
Female
/
Humans
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Male
Idioma:
En
Revista:
Life Sci Space Res (Amst)
Ano de publicação:
2018
Tipo de documento:
Article