Observation of pulmonary arterial pressure index of military personnel stationed on plateau
10.3760/cma.j.cn113854-20210201-00029
- VernacularTitle:军事人员进驻高原肺动脉压力指数变化观察
- Author:
Mei XU
1
;
Kechun YAO
;
Xiaoyan FAN
;
Xuemei WANG
;
Lamu PUBU
;
Xi LIU
Author Information
1. 空军特色医学中心，北京 100142
- Publication Type:Journal Article
- Keywords:
Altitude;
Hypertension, pulmonary;
Echocardiography;
Heart ventricle;
Military personnel
- From:
Chinese Journal of Aerospace Medicine
2021;32(4):226-229
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To provide the reference for aeromedical support to long-distance delivery to plateau by comparing the changes of pulmonary artery pressure and right heart correlation parameters of military personnel between the states of pre-entering and different time periods on plateau.Methods:The correlation indexes on pulmonary artery pressure of 23 healthy military personnel were measured before and after entering plateau, including blood flow acceleration time (ACT) of pulmonary artery, right ventricular ejection time (RVET) and right ventricular pre-ejection period (RVPEP). The systolic pulmonary artery pressure (SPAP) and mean pulmonary artery pressure (MPAP) were calculated. The right ventricular outflow tract (RVOT), main pulmonary artery diameter (MPAD), right ventricular diameter (RVD) and right atrium diameter (RAD) were measured. According to the different stationed time, the military personnel were divided into 3 groups: 10 cases for 2 months, 7 cases for 3 months and 6 cases for 8 months. The changes of pulmonary artery pressure of military personnel were compared among the different time periods, as well as before and after stationed on plateau for each group that distinguished the states on plain and plateau.Results:After entering plateau, ACT of subjects was significantly reduced ( F=3.25, P<0.01), RVPEP was increased, the difference was significant ( F=4.51, P<0.05), SPAP and MPAP were significantly increased, and the differences were statistically significant ( F=4.19, 2.69, P<0.01). Two months after entering plateau, ROVT and RVD of subjects were significantly increased ( t=1.442, 2.643, P<0.05), but the MPAD and RAD were not different as compared those before entering plateau (P>0.05). Conclusions:① The hypoxic and low-pressure in plateau areas cause the significantly higher pulmonary artery pressure of military personnel than that in plain areas, and the right ventricular structure is also changed accordingly. ② The pulmonary artery pressure shows insignificant difference with the progresses of body adaptation and the time stationed on plateau. ③ Pulmonary hypertension occurs in the early stage of stationing on plateau. So preventing or alleviating the occurrence of pulmonary hypertension at the early stage of plateau stationing is important for the military personnel assigned via air delivery.
