| Autor: |
Clark, Justin S., Lin, Yuxiang J., Criddle, Michael J., Jones, Roger, Koppert, Erik, Swier, Patrick |
| Zdroj: |
Journal of Applied Physiology; August 1998, Vol. 85 Issue: 2 p459-464, 6p |
| Abstrakt: |
A bolus method for noninvasive measurement of cardiac output (CO) and mixed venous oxygen content (Cv¯O2) has been tested against absolute CO andCv¯O2standards in dogs. No statistical differences in CO were found between bolus method and electromagnetic flowmeter measurement comparisons in an 18-dog study in which CO varied from 0.5 to 3.0 l/min. The SD for all paired differences was 0.14 l/min; however, data averaging over 10-min intervals were found to reduce the CO measurement uncertainty to <0.08 l/min. The ability of the bolus method to follow rapid CO changes, experimentally produced by control of a pump (surgically placed between the superior and inferior vena cava and the right atrium), was documented and found to satisfy CO monitoring requirements of unstable subjects.Cv¯O2bolus values were found to be statistically equivalent to reference measurements. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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