Effects of deep helium-oxygen diving on divers’ pulmonary function
10.3760/cma.j.cn311847-20201027-00409
- VernacularTitle:大深度氦氧潜水对潜水员肺功能的影响
- Author:
Yongjun SUN
1
;
Guoju FU
1
;
Tao YANG
1
;
Xiaochen BAO
1
Author Information
1. 200433 上海，海军军医大学海军特色医学中心
- Publication Type:Journal Article
- Keywords:
Helium-oxygen diving;
Deep;
Pulmonary function;
Effects
- From:
Chinese journal of nautical medicine and hyperbaric medicine
2021;28(5):653-655,658
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effects of a single deep helium-oxygen (heliox) diving on divers’ pulmonary function.Methods:In April 2019, 15, 5, and 6 male divers of the Second Detachment of Risk Prevention and Rescue were selected to perform the 80 m, 100 m, and 120 m heliox diving, respectively. Their pulmonary functions were measured before, immediately after, and 24 h after diving.Results:The forced expired volume in one second (FEV1.0) / forced vital capacity (FVC), and maximum expiratory flow at 25% of vital capacity (MEF 25%) of divers immediately after 80 m heliox diving were lower than those before diving, and there were statistically significant differences ( P<0.05). The FEV1.0, FEV1.0/FVC, peak expiratory flow (PEF), and maximum expiratory flow at 75% of vital capacity (MEF 75%) of divers immediately after 100 m and 120 m heliox diving presented a decreasing trend, but there was no statistically significant difference( P>0.05). The results of the above measurements 24 h after the diving rebounded close to the levels before diving. Conclusion:A single deep heliox diving can cause temporary expiratory and small airway dysfunction, which will disappear 24 h after the diving.
