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My research interests include two general areas: Respiratory and Cardiovascular Physiology and Pathophysiology. This includes assessment and management of patients with acute and chronic lung disease, and patients at risk for Perioperative Heart Failure. Intraoperative noninvasive cardiac output studies show cardiac index is the most reliable indicator for hypovolemia during acute surgical anemia, and also for intraoperative heart failure. We have confirmed that a steep alveolar plateau on the capnograph of morbidly obese patients during laparoscopic CO2 insufflation, or during congestive heart failure, is induced by lung volume (FRC) falling below closing capacity towards residual volume. The capnograph slope recovers with increased FRC via positive end-expiratory pressure.
References (Selected From 19 Publications )
Dueck R. Assessment and monitoring of flow limitation and other parameters from flow/volume loops. J Clin Mon 2000; 16:425-432
Dueck R, Mitchell M, Albo M, Yi K. Noninvasive Cardiac Index as a Blood Volume Surrogate to Assess the Need for Transfusion during Radical Retropubic Prostatectomy. Anesthesiology 2003; ASA Meeting Abstracts, A-180
Dueck R. Pulmonary Blood Flow. Noninvasive Cardiac Output. In: Capnography: Clinical Aspects. ED: J Gravenstein, M Jaffe, D Paulus. Cambridge University Press 2004, PP 199-212
Dueck, R. Alveolar recruitment versus hyperinflation: a balancing act. Curr Curr Opin Anaesthesiol 2006; 19:650-654
Wong EG, Prisk GK, Hastings RH, Dueck R. Capnographic identification of expiratory flow limitation. American Society of Anesthesiologists Annual Meeting Abstracts, 2008: A1230.
Dueck R, Hastings R, Prisk K. Low FRC Induces Flow Limitation and Elevated Phase III slope during Laparscopic Surgery. American Society of Anesthesiologists Annual Meeting Abstracts, 2009: A1380.