Abnormal end-tidal PO(2) and PCO(2) at the anaerobic threshold correlate well with impaired exercise gas exchange in patients with left ventricular dysfunction

The aim of the present study was to compare the end-tidal O(2) pressure (PETO(2)) to end-tidal CO(2) pressure (PETCO(2)) in cardiac patients during rest and during 2 states of exercise: at anaerobic threshold (AT) and at peak. The purpose was to see which metabolic state, PETO(2) or PETCO(2), best c...

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Bibliographic Details
Published in:Circulation journal : official journal of the Japanese Circulation Society 2012, Vol.76 (1), p.79-87
Main Authors: Kano, Hiroto, Koike, Akira, Hoshimoto-Iwamoto, Masayo, Nagayama, Osamu, Sakurada, Koji, Suzuki, Takeya, Tsuneoka, Hidekazu, Sawada, Hitoshi, Aizawa, Tadanori, Wasserman, Karlman
Format: Article
Language:English
Subjects:
Aged
Anaerobic Threshold - physiology
Carbon Dioxide - metabolism
Exercise - physiology
Exercise Test
Exercise Tolerance - physiology
Female
Humans
Male
Middle Aged
Oxygen - metabolism
Oxygen Consumption - physiology
Pulmonary Gas Exchange - physiology
Retrospective Studies
Severity of Illness Index
Stroke Volume - physiology
Tidal Volume - physiology
Ventricular Dysfunction, Left - physiopathology
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Summary:The aim of the present study was to compare the end-tidal O(2) pressure (PETO(2)) to end-tidal CO(2) pressure (PETCO(2)) in cardiac patients during rest and during 2 states of exercise: at anaerobic threshold (AT) and at peak. The purpose was to see which metabolic state, PETO(2) or PETCO(2), best correlated with exercise limitation. Thirty-eight patients with left ventricular (LV) ejection fraction
ISSN:1347-4820