[墨西哥城气体交换参数的表征]

[Characterization of gas exchange parameters in Mexico City].

作者信息

Santos-Martínez Luis Efren, Arias-Jiménez Adrián, Quevedo-Paredes Javier, Gómez-López Leticia, Ordoñez-Reyna Adriana, Moreno-Ruiz Luis Antonio

机构信息

Instituto Mexicano del Seguro Social, Centro Médico Nacional Siglo XXI, Hospital de Cardiología, Servicio de Hipertensión Pulmonar y Corazón Derecho. Ciudad de México, México.

Instituto Mexicano del Seguro Social, Centro Médico Nacional La Raza, Hospital de Especialidades "Antonio Fraga Mouret", Coordinación del Curso Profesional Técnico Universitario en Terapia Respiratoria. Ciudad de México, México.

出版信息

Rev Med Inst Mex Seguro Soc. 2021 Nov 1;59(6):473-481.

PMID:34905321

Abstract

BACKGROUND

At high altitude the gas exchange is impaired, in the moderate altitude of Mexico City they are not yet defined.

OBJECTIVE

To characterize the gas exchange in the moderate altitude of Mexico City.

MATERIAL AND METHODS

Through an analytical cross-sectional study, subjects born and inhabitants of Mexico City, both genders, aged 20 to 59 years without cardiopulmonary disease, were studied. Their demographic variables, simple spirometry and arterial blood gas were recorded. Differences in variables were calculated with one-way ANOVA for independent groups and Bonferroni adjustment. p < 0.05 was accepted as significant.

RESULTS

335 subjects were studied, 168 (50.15%) men. Group age 45 ± 11 years old, body mass index 22.97 ± 1.54 Kg/m2. Forced expiratory volume ratio in the first second / Forced vital capacity (FEV1/FVC) 91.58 ± 12.86%. The arterial oxygen pressure was: 66 ± 5.02 mmHg, carbon dioxide: 32.07 ± 2.66 mmHg, arterial oxygen saturation: 93.0 3 ± 1.80%, and hemoglobin: 14.07 ± 1.52 gr/dL.

CONCLUSIONS

The arterial oxygen pressure and carbon dioxide are lowered at the Mexico City altitude.

摘要

背景

在高海拔地区气体交换受损，而在墨西哥城的中度海拔地区，相关情况尚未明确。

目的

描述墨西哥城中度海拔地区的气体交换情况。

材料与方法

通过一项分析性横断面研究，对出生并居住在墨西哥城、年龄在20至59岁、无心肺疾病的男女受试者进行研究。记录他们的人口统计学变量、简易肺量计测量结果和动脉血气。使用独立组的单因素方差分析和Bonferroni校正计算变量差异。p < 0.05被认为具有统计学意义。

结果

共研究了335名受试者，其中168名（50.15%）为男性。平均年龄45 ± 11岁，体重指数22.97 ± 1.54 Kg/m²。第一秒用力呼气量/用力肺活量（FEV1/FVC）为91.58 ± 12.86%。动脉血氧分压为：66 ± 5.02 mmHg，二氧化碳分压为：32.07 ± 2.66 mmHg，动脉血氧饱和度为：93.03 ± 1.80%，血红蛋白为：14.07 ± 1.52 gr/dL。