Calculation of Cardiac Output from Indicator - Dilution Curves in the Presence of Mitral
نویسنده
چکیده
M EIER and Zierlerl have lucidly presented the theory underlying the application of indicator dilution of the measurement of flow in the vascular bed. This theory is not violated by the presence of valve incompetence provided that indicator particles that recirculate and reenter the vascular system can be excluded from the primary indicator concentration-time curve. Valve incompetence results in an increased dilution volume and a slowed clearance of indicator from the heart. Indicator-dilution curves in such circulatory systems show reduced magnitudes of concentration and a prolonged disappearance phase when compared to dilution curves obtained from similar systems without valve incompetence. Previous studies of indicator-dilution curves in patients with mitral incompetence have been concerned with the detection of the incompetence2 or with the estimation of the amount of regurgitation.3 The calculation of forward
منابع مشابه
Calculation of Cardiac Output from Indicator-dilution Curves in the Presence of Mitral Regurgitation.
M EIER and Zierlerl have lucidly presented the theory underlying the application of indicator dilution of the measurement of flow in the vascular bed. This theory is not violated by the presence of valve incompetence provided that indicator particles that recirculate and reenter the vascular system can be excluded from the primary indicator concentration-time curve. Valve incompetence results i...
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تاریخ انتشار 2005