TY  - JOUR
ID  - uneatlantico59
TI  - Acute muscle fatigue and CPR quality assisted by visual feedback devices: A randomized-crossover simulation trial
AV  - public
A1  - Rey, Ezequiel
A1  - Abelairas-Gómez, Cristian
A1  - González-Salvado, Violeta
A1  - Mecías-Calvo, Marcos
A1  - Rodríguez-Ruiz, Emilio
A1  - Rodríguez-Núñez, Antonio
IS  - 9
N2  - Objective
To analyse the acute muscular fatigue (AMF) in triceps brachii and rectus abdominis during compression-only and standard cardiopulmonary resuscitation (CPR) performed by certified basic life support providers.

Methods
Twenty-six subjects were initially recruited and randomly allocated to two study groups according to the muscles analysed; eighteen finally met the inclusion criteria (nine in each group). Both groups carried out two CPR tests (compression-only and standard CPR) of 10 min divided into five 2-min intermittent periods. The ventilation method was freely chosen by each participant (mouth-to-mouth, pocket-mask or bag-valve-mask). CPR feedback was provided all the time. AMF was measured by tensiomyography at baseline and after each 2-min period of the CPR test, in triceps brachii or rectus abdominis according to the study group.

Results
Rectus abdominis? contraction time increased significantly during the fifth CPR period (p = 0.020). Triceps brachii?s radial muscle belly displacement (p = 0.047) and contraction velocity (p = 0.018) were lower during compression-only CPR than during standard CPR. Participants who had trained previously with feedback devices achieved better CPR quality results in both protocols. Half of participants chose bag-valve-mask to perform ventilations but attained lower significant ventilation quality than the other subjects.

Conclusions
Compression-only CPR induces higher AMF than standard CPR. Significantly higher fatigue levels were found during the fifth CPR test period, regardless of the method. Adequate rescuer?s strength seems to be a requisite to take advantage of CPR quality feedback devices. Training should put more emphasis on the quality of ventilation during CPR.
JF  - PLOS ONE
Y1  - 2018///
UR  - http://doi.org/10.1371/journal.pone.0203576
SN  - 1932-6203
VL  - 13
ER  -