Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Changes in respiratory values in each patient due to carbon dioxide rebreathing. (a) Increases in minute ventilation (VE) due to carbon dioxide rebreathing. (b) Increases in arterial carbon dioxide tension (PaCO2) due to carbon dioxide rebreathing. Medians (triangles) and interquartile ranges are also shown. *P < 0.05 versus 35 s rebreathing.
