Objective: to estimate reference values for spirometry parameters in healthy workers at different altitude levels in Peru. Materials and methods: we performed a secondary analysis of records from occupational medical examinations carried out between May and June 2019 in workers at four different altitude levels: level 1: 0-100 m above sea level (ASL) (Trujillo, Pisco, Marcona, Lima), level 2: 2.300–2.800 m ASL (Arequipa and Cajamarca), level 3: 3.200–3.800 m ASL (Huancayo, La Oroya, Orcopampa, and Oyon); and level 4: 4.000–4.400 m ASL (Carhuacoto and Cerro de Pasco). Spirometry reference values for forced expiratory volume during the first second (FEV1), forced vital capacity (FVC), and the FEV1/FVC rate were constructed and compared using a multiple linear regression model. Results: we analyzed 33.232 records obtained from healthy workers in different altitude levels in Peru. In m...

Objective: to estimate reference values for spirometry parameters in healthy workers at different altitude levels in Peru. Materials and methods: we performed a secondary analysis of records from occupational medical examinations carried out between May and June 2019 in workers at four different altitude levels: level 1: 0-100 m above sea level (ASL) (Trujillo, Pisco, Marcona, Lima), level 2: 2.300–2.800 m ASL (Arequipa and Cajamarca), level 3: 3.200–3.800 m ASL (Huancayo, La Oroya, Orcopampa, and Oyon); and level 4: 4.000–4.400 m ASL (Carhuacoto and Cerro de Pasco). Spirometry reference values for forced expiratory volume during the first second (FEV1), forced vital capacity (FVC), and the FEV1/FVC rate were constructed and compared using a multiple linear regression model. Results: we analyzed 33.232 records obtained from healthy workers in different altitude levels in Peru. In m...

"Objetivo: Estimar los valores de referencia de los parámetros espirométricos en trabajadores sanos de diferentes altitudes del Perú. Materiales y métodos: El presente trabajo corresponde a un análisis secundario de base de datos poblacional para lo cual se propuso realizar un estudio transversal analítico. Resultados: Los parámetros de la función pulmonar se encontraron que existía un mayor promedio de la CVF y del VEF1 en los varones a medida que incrementa la altura. En cuanto al parámetro del VEF1/CVF, se evidencio un mayor promedio en las mujeres en los grupos geográficos de mayor altura. Conclusiones: Los valores espirométricos de VEF1 y CVF son diferentes según nivel de altitud de la población en donde se evalúa. Por lo tanto, existe una relación entre los valores espirométricos y los niveles de altitud en población peruana."