RT Journal Article
SR Electronic
T1 Inspiratory Capacity and Vital Capacity of Healthy Subjects 9–81 Years of Age at Moderate-High Altitude
JF Respiratory Care
FD American Association for Respiratory Care
SP respcare.06284
DO 10.4187/respcare.06284
A1 Silvia Cid-Juárez
A1 Ireri Thirión-Romero
A1 Luis Torre-Bouscoulet
A1 Laura Gochicoa-Rangel
A1 David Martínez-Briseño
A1 Iván Y Hernández-Paniagua
A1 Olivia Delgadillo-Ruiz
A1 Selene Guerrero-Zúñiga
A1 Rodrigo Del Río-Hidalgo
A1 Daniel Cortés-Medina
A1 Peter E Bapo-López
A1 Pablo León-Gómez
A1 Anaid Bautista-Bernal
A1 Rogelio Pérez-Padilla
YR 2019
UL http://rc.rcjournal.com/content/early/2019/01/15/respcare.06284.abstract
AB BACKGROUND: Measurements of inspiratory capacity (IC) and vital capacity (VC) are used to recognize dynamic hyperinflation, but appropriate reference values are required to achieve accurate clinical interpretations. Altitude above sea level is a potential determining factor for lung volumes, including IC and VC.OBJECTIVE: To describe IC and VC for healthy people who live in Mexico City at an altitude of 2,240 m above sea level.METHODS: Healthy subjects ages 9–81 y completed slow spirometry by following 2005 American Thoracic Society/European Respiratory Society standards. Once associations were explored, linear regression models were constructed and values were compared with those from previously published equations.RESULTS: A total of 441 healthy subjects (55.1% women) participated. The mean age was 32 y (minimum age, 9 y; maximum age, 81 y). IC and VC measurements were associated with sex, age, height, and weight. An accelerated increase in IC and VC was evident from 9 to 20 y of age, followed by a gradual decrease in both sexes. In general, IC was higher in our population than predicted by previously published reference equations.CONCLUSION: IC in healthy people at 2,240 m above sea level was higher than that of previous reports about European and Latin-American subjects of the same height, sex, and age who were at sea level. The present study provided robust reference values for persons who lived at a moderate altitude.