Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Apr 2010
Comparative StudyValidity of an arterial pressure waveform analysis device: does the puncture site play a role in the agreement with intermittent pulmonary artery catheter thermodilution measurements?
The measurement of cardiac output is a key element in the assessment of cardiac function. Recently, a pulse contour analysis-based device without need for calibration became available (FloTrac/Vigileo, Edwards Lifescience, Irvine, CA). This study was conducted to determine if there is an impact of the arterial catheter site and to investigate the accuracy of this system when compared with the pulmonary artery catheter using the bolus thermodilution technique (PAC). ⋯ The FloTrac/Vigileo system was shown to not produce exactly the same CO data when used in radial and femoral arteries, even though the percentage error was close to the clinically acceptable range. Thus, the impact of the introduction site of the arterial catheter is not negligible. The agreement with thermodilution was low.
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J. Cardiothorac. Vasc. Anesth. · Apr 2010
Comparative StudyFeasibility of measuring myocardial performance index of the right ventricle in anesthetized patients.
Myocardial performance index, the sum of the 2 isovolumic times divided by the ejection time, contains information on global systolic and diastolic function. This study was performed to determine the feasibility of right ventricular myocardial performance index measurements if measured by transesophageal echocardiography in patients under general anesthesia and positive-pressure ventilation. ⋯ This finding questions the use of right ventricular myocardial performance index measurements in anesthetized patients under positive-pressure ventilation.