RT Journal Article
T1 Physiological demands of quality cardiopulmonary resuscitation performed at simulated 3250 meters high
A1 Carballo Fazanes, Aida
A1 Barcala Furelos, Roberto
A1 Eiroa Bermúdez, Juan
A1 Fernández-Méndez, María
A1 Abelairas Gómez, Cristian
A1 Martínez Isasi, Santiago
A1 Murciano, Manuel
A1 Fernández Méndez, Felipe
A1 Rodríguez Núñez, Antonio
K1 CPR quality
K1 Chest compressions
K1 Heart rate
K1 High altitude
K1 Oxygenation
K1 Physiology
AB Aim: To analyse the effect of oxygen fraction reduction (O2 14%, equivalent to 3250 m) on Q-CPR and rescuers' physiological demands.Methodology: A quasi-experimental study was carried out in a sample of 9 Q-CPR proficient health care professionals. Participants, in teams of 2 people, performed 10 min CPR on a Laerdal ResusciAnne mannequin (30:2 compression/ventilation ratio and alternating roles between rescuers every 2 min) in two simulated settings: T21-CPR at sea level (FiO2 of 21%) and T14 - CPR at 3250 m altitude (FiO2 of 14%). Effort self-perception was rated from 0 (no effort) to 10 (maximum demand) points.Results: Quality of chest compressions was good and similar in both conditions (T21 vs T14). However, the percentage of ventilations with adequate tidal volume was lower in altitude than at sea level conditions (35.9 ± 25.2% vs. 54.7 ± 23.2%, p = 0.035). The subjective perception of effort was significantly higher at simulated altitude (5 ± 2) than at sea level (3 ± 2) (p = 0.038). Maximum heart rate during the tests was similar in both conditions; however, mean oxygen saturation was significantly lower in altitude conditions (90.5 ± 2.5% vs. 99.3 ± 0.5%, p < 0.001).Conclusion: Although performing CPR under simulated hypoxic altitude conditions significantly increases the physiological demands and subjective feeling of tiredness compared to sea level CPR, trained rescuers are able to deliver good Q-CPR in such conditions, at least in the first 10 min of resuscitation.
PB Elsevier
YR 2020
FD 2020-12
LK https://hdl.handle.net/10347/43891
UL https://hdl.handle.net/10347/43891
LA eng
NO Carballo-Fazanes A, Barcala-Furelos R, Eiroa-Bermúdez J, Fernández-Méndez M, Abelairas-Gómez C, Martínez-Isasi S, Murciano M, Fernández-Méndez F, Rodríguez-Núñez A. Physiological demands of quality cardiopulmonary resuscitation performed at simulated 3250 meters high. Am J Emerg Med. 2020;38(12):2580-2585. doi: 10.1016/j.ajem.2019.12.048.
DS Minerva
RD 4 may 2026