Effect of Frame Rate, Color Gain, and Filter Setting on Automated Cardiac Output Measurement by Spatio-temporal Integration of Doppler Velocity Profile in Vivo

1998 ◽  
Vol 31 (2) ◽  
pp. 43A
Author(s):  
T Hozumi
Keyword(s):  
Cardiac Output ◽  
Velocity Profile ◽  
Temporal Integration ◽  
Cardiac Output Measurement ◽  
Frame Rate ◽  
Doppler Velocity ◽  
Output Measurement ◽  
Spatio Temporal

Pediatric cardiac output measurement using surface integration of velocity vectors: An in vivo validation study

2000 ◽  
Vol 28 (11) ◽  
pp. 3664-3671 ◽  
Author(s):  
Michelle S. Chew ◽  
MB BS ◽  
Joakim Brandberg ◽  
Steinar Bjarum ◽  
Katrine Baek-Jensen ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Validation Study ◽  
Cardiac Output Measurement ◽  
Output Measurement ◽  
Surface Integration ◽  
In Vivo Validation

scholarly journals An Evaluation of Thermodilution Cardiac Output Measurement Using the Swan-Ganz Catheter

1981 ◽  
Vol 9 (3) ◽  
pp. 208-220 ◽  
Author(s):  
W. B. Runciman ◽  
A. H. Ilsley ◽  
J. G. Roberts
Keyword(s):  
Cardiac Output ◽  
Ambient Temperature ◽  
Cardiac Output Measurement ◽  
In Vivo Studies ◽  
Output Measurement ◽  
Thermodilution Cardiac Output ◽  
Performance Effect ◽  
Factors Affecting

Errors in thermodilution cardiac output measurement were quantitated to determine the order of accuracy of routine measurements performed by unskilled personnel. In vitro and in vivo studies were undertaken to examine factors affecting the volume and temperature of the injectate, catheter thermistor and computer performance, effect of respiration, use of cold (0-4 °C) versus ambient temperature (20-25 °C) injectate, and the interpretation of measurements. Ambient temperature injectate incurred unacceptably large errors; cold injectate (injections were timed with respiration) produced variations in performance by equipment and personnel which accounted for only 2% of the variation between successive measurements. Real changes in cardiac output and inherent variability of the downslope of the thermal curve, necessitating an empirically based calculation, account for up to 10% variation between successive measurements. When cold injectate was used, and the average of three corrected measurements taken, thermodilution cardiac output measurements were within 10% of a simultaneous dye dilution measurement.

Non-Invasive Cardiac Output Measurement: Where Are We Now?

2018 ◽  
Vol 5 (4) ◽  
pp. 221-227
Author(s):  
Mingqiang Li ◽  
Longqiu Yang ◽  
Liwen Zhou ◽  
Jasmine Liu ◽  
Srikant Patel ◽  
...  
Keyword(s):  
Cardiac Output ◽  
Cardiac Output Measurement ◽  
Output Measurement ◽  
Non Invasive
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