Estimation of Cardiac Output from Precordial Dilution Curves in Patients with Cardiopulmonary Disease

Estimation of cardiac output from precordial dilution curves in patients with cardiopulmonary disease.

Estimation of Cardiac Output from Precordial Dilution Curves in Patients with Cardiopulmonary Disease

Comparison of flow rates measured from precordial dilution curves, simultaneous direct arterial dilution curves, and nearly simultaneous Fick determinations in 29 patients failed to indicate any difference in precision. Successive precordial determinations of flow rate were adequately reproducible. It is concluded that the precordial dilution method gives flow values comparable to those obtaine...

On-line computation of cardiac output from dye dilution curves.

• Calculation of cardiac output from dye dilution curves as described by Hamilton has been well verified.' 3 The technique of calculating the cardiac output with the use of a planimeter or replotting on log paper is tedious and-often inexact. Furthermore, the necessary long delay between the dye injection and the availability of the result has limited the use of this technique in medical resear...

Dye dilution curves and cardiac output in newborn infants.

The pattern of ldye dilution curves and the cardiac output was studied in 29 healthy newborn infants during the first 26 hours of life by the method of Wood and his associates. Thirty-six per cent of all infants studied had curves of normal contour which occurred mostly in infants older than 15 hours. Infants younger than 15 hours tended to have curves of abnormal shape. These were either di-ph...

Calculation of Cardiac Output from Indicator - Dilution Curves in the Presence of Mitral

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...