Abnormal End-Tidal PO2 and PCO2 at the Anaerobic Threshold Correlate Well With Impaired Exercise Gas Exchange in Patients With Left Ventricular Dysfunction

Abnormal End-Tidal PO2 and PCO2 at the Anaerobic Threshold Correlate Well With Impaired Exercise Gas Exchange in Patients With Left Ventricular Dysfunction

Background: The aim of the present study was to compare the end-tidal O2 pressure (PETO2) to end-tidal CO2 pressure (PETCO2) 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, PETO2 or PETCO2, best c...

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Veröffentlicht in:Circulation Journal 2012, Vol.76(1), pp.79-87
Hauptverfasser: Kano, Hiroto, Koike, Akira, Hoshimoto-Iwamoto, Masayo, Nagayama, Osamu, Sakurada, Koji, Suzuki, Takeya, Tsuneoka, Hidekazu, Sawada, Hitoshi, Aizawa, Tadanori, Wasserman, Karlman
Format: Artikel
Sprache:eng
Schlagworte:
Anaerobic threshold
End-tidal CO2 pressure
End-tidal O2 pressure
Exercise testing
Peak VO2
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Zusammenfassung:Background: The aim of the present study was to compare the end-tidal O2 pressure (PETO2) to end-tidal CO2 pressure (PETCO2) 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, PETO2 or PETCO2, best correlated with exercise limitation. Methods and Results: Thirty-eight patients with left ventricular (LV) ejection fraction
ISSN:1346-9843
1347-4820
DOI:10.1253/circj.CJ-11-0599