DocumentCode :
1847330
Title :
Transtracheal Doppler: a new method of cardiac output measurement
Author :
Weber, Roland E.
Author_Institution :
Appl. Biometrics Inc., Minnetonka, MN, USA
fYear :
1989
fDate :
9-12 Nov 1989
Firstpage :
1571
Abstract :
A noninvasive procedure for continuous cardiac output monitoring called transtracheal Doppler is presented. It utilizes Doppler ultrasound technology technology in combination with the endotracheal intubation which is routinely used for ventilation in the operating room and critical care unit. To calibrate the procedure for human use, the average angle between the ultrasound beam and the ascending aorta in a set of patients was determined by fitting the aortic diameters determined by transtracheal Doppler to those measured by external echocardiography. This calibration was then tested in a second set of patients by comparing the cardiac output measurements with the output of thermodilution, the current clinical standard. Good agreement was found
Keywords :
Doppler effect; biomedical measurement; biomedical ultrasonics; cardiology; haemodynamics; ultrasonic measurement; aortic diameter; cardiac output measurement; clinical standard; critical care unit; endotracheal intubation; noninvasive procedure; operating room; patient ventilation; thermodilution output; Calibration; Current measurement; Echocardiography; Humans; Measurement standards; Monitoring; Testing; Ultrasonic imaging; Ultrasonic variables measurement; Ventilation;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 1989. Images of the Twenty-First Century., Proceedings of the Annual International Conference of the IEEE Engineering in
Conference_Location :
Seattle, WA
Type :
conf
DOI :
10.1109/IEMBS.1989.96346
Filename :
96346
Link To Document :
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