Noninvasive measurement of cardiac output during general surgery using transtracheal doppler.
نویسندگان
چکیده
منابع مشابه
Esophageal Doppler: noninvasive cardiac output monitor.
In this article we describe the esophageal Doppler, a noninvasive, instantaneous cardiac output monitor. Its reliability has been demonstrated to be comparable to that of other current techniques used in the clinical arena to measure cardiac output. It helps guiding intravascular fluid resuscitation by quantifying the increase in flow in response to fluid challenges and by indicating the platea...
متن کاملDoppler measurement of cardiac output during cardiopulmonary resuscitation.
OBJECTIVE To estimate the cardiac output produced by external cardiac compression during standard cardiopulmonary resuscitation performed by two groups of operators with different levels of experience and training. METHODS Cardiac output was measured by Doppler aortovelography. All patients included in the study had necropsy examinations. Only patients without evidence of pulmonary embolism, ...
متن کاملNoninvasive Doppler determination of cardiac output in man. Clinical validation.
A noninvasive technique for assessing cardiac output (CO) was evaluated by comparing it with thermodilution determinations in patients in the intensive care unit. The new method uses pulsed ultrasound to measure aortic diameter and continuous-wave Doppler ultrasound to obtain aortic blood velocity. An initial study evaluating just the velocity measurement showed that changes of the Doppler inde...
متن کاملResearch utility of noninvasive methods for measurement of cardiac output.
Two noninvasive methods of cardiac index (Q) determination, pulsed Doppler echocardiography (QDop), and CO2 rebreathing (QCO2) were compared to dye dilution in eight normal volunteers. Measurements of Q were made by dye dilution (QDD) and the two noninvasive techniques under the following conditions: supine rest, after inflation of cuffs around the thighs, 35-degree head-up tilt, supine rest re...
متن کاملNon-invasive cardiac output determination by two-dimensional independent Doppler during and after cardiac surgery.
PURPOSE This study was to compare noninvasive measurement of cardiac output (CO) using a novel Doppler technique with invasive CO measurements in the postcardiac surgical intensive care unit. DESCRIPTION Thirty-six patients (67.2 +/- 10 years, New York Heart Association functional class 3.1 +/- 0.3) undergoing coronary revascularization were prospectively examined postoperatively. One hundred...
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ژورنال
عنوان ژورنال: THE JOURNAL OF JAPAN SOCIETY FOR CLINICAL ANESTHESIA
سال: 1990
ISSN: 0285-4945,1349-9149
DOI: 10.2199/jjsca.10.374