Fiberoptic-Dye Dilution Method for Measurement of Cardiac Output

Fiberoptic-Dye Dilution Method for Measurement of Cardiac Output

A new method for the measurement of cardiac output has been tested in 69 patients undergoing catheterization of the right and left sides of the heart. It is based on the recently described fiberoptic hemoreflection method. In order to verify the validity of these measurements, correlations with stroke indices determined by the Fick principle and by biplane angiocardiography were also carried ou...

Fiberoptic-dye dilution method for measurement of cardiac output. Comparison with the direct Fick and the angiocardiographic methods.

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...

Automated non-invasive measurement of cardiac output by the carbon dioxide rebreathing method: comparisons with dye dilution and thermodilution.

The accuracy and reproducibility of indirect measurement of cardiac output at rest by the carbon dioxide rebreathing (indirect Fick) method with an automated respiratory analysis system (Gould 9000IV) were compared with simultaneous measurements made in duplicate by dye dilution and thermodilution in 25 patients having cardiac catheterisation studies. Measurements of cardiac output by the carbo...