HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Personal Folders Download to citation manager Author home page(s): Artur Lichtenberg Permission Requests Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Knobloch, K. Articles by Phillips, R. Search for Related Content PubMed PubMed Citation Articles by Knobloch, K. Articles by Phillips, R.

Ann Thorac Surg 2005;80:1479-1483
© 2005 The Society of Thoracic Surgeons

---

New technology

Non-Invasive Cardiac Output Determination by Two-Dimensional Independent Doppler During and After Cardiac Surgery

^a Department of Trauma Surgery, Hannover, Germany
^b Department of Thoracic and Cardiovascular Surgery, Hannover, Germany
^c Department of Anesthesiology, Hannover, Germany
^d Department of Gynecology, Medical School Hannover, Hannover, Germany
^e University of Queensland, Brisbane, Qld, Australia

Accepted for publication December 21, 2004.

^_* Address reprint requests to Dr Knobloch, Department of Trauma Surgery, Hannover Medical School, Carl-Neuberg-Str 1, Hannover, 30625 Germany (Email: kknobi{at}yahoo.com).

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 eighty paired CO and stroke volume measurements were compared from the noninvasive USCOM device (Sydney, Australia) and the invasive Swan-Ganz catheter at varying COs. Eighteen measurements were performed intraoperatively by direct insonation of the right ventricular outflow tract.

EVALUATION: Mean noninvasive and invasive CO values were 5.15 ± 1.98 L/min and 4.92 ± 2.0 L/min, respectively (r = 0.870; p < 0.01). The mean difference between methods was –0.23 ± 1.01 L/min greater than a range of CO values from 2.5 to 9.9 L/min. Mean central venous saturation percentage was 72 ± 9%, correlating with both noninvasive and invasive CO (r = 0.474 and 0.606, respectively, p < 0.01). Intraoperatively, both direct and invasive CO were identical.

CONCLUSIONS: Using the ultrasonic cardiac output monitoring (USCOM) device it is possible to determine noninvasive beat-to-beat CO in postcardiac surgery patients without the possible complications associated with invasive right heart catheterization. The USCOM CO and stroke volume showed a very good agreement with invasive Swan-Ganz measures and correlated with central venous saturation percentage.

This article has been cited by other articles:

				O. Thom, D. M. Taylor, R. E. Wolfe, J. Cade, P. Myles, H. Krum, and R. Wolfe Comparison of a supra-sternal cardiac output monitor (USCOM) with the pulmonary artery catheter Br. J. Anaesth., December 1, 2009; 103(6): 800 - 804. [Abstract] [Full Text] [PDF]

				K. Knobloch eComment: Non-invasive ultrasonic cardiac output monitoring in the surgical operating room Interactive CardioVascular and Thoracic Surgery, June 1, 2009; 8(6): 646 - 646. [Full Text] [PDF]

				R. Phillips, P. Lichtenthal, J. Sloniger, D. Burstow, M. West, and J. Copeland Noninvasive Cardiac Output Measurement in Heart Failure Subjects on Circulatory Support Anesth. Analg., March 1, 2009; 108(3): 881 - 886. [Abstract] [Full Text] [PDF]

				K. Knobloch eComment: Double-knotted Swan-Ganz catheter - potential for non-invasive ultrasonic cardiac output monitoring? Interactive CardioVascular and Thoracic Surgery, October 1, 2008; 7(5): 862 - 863. [Full Text] [PDF]

				L. Siu, A. Tucker, S. K. Manikappa, and J. Monagle Does Patient Position Influence Doppler Signal Quality from the USCOM Ultrasonic Cardiac Output Monitor? Anesth. Analg., June 1, 2008; 106(6): 1798 - 1802. [Abstract] [Full Text] [PDF]

				K. Knobloch, M. Spies, and P. M. Vogt The more the better? Cardiac output monitoring during cardiopulmonary rescuscitation. Interactive CardioVascular and Thoracic Surgery, February 1, 2008; 7(1): 157 - 157. [Full Text] [PDF]

				R. Savage and L. G. Svensson Invited commentary Ann. Thorac. Surg., October 1, 2005; 80(4): 1483 - 1484. [Full Text] [PDF]