Search Results - "Stephens, Andrew F"

Impact of Concomitant Mitral Regurgitation on the Hemodynamic Indicators of Aortic Stenosis by Šeman, Michael, Stephens, Andrew F, Walton, Antony, Duffy, Stephen J, McGiffin, David, Nanayakkara, Shane, Kaye, David M, Gregory, Shaun D, Stub, Dion

“…Background In patients with aortic stenosis (AS), the presence of mitral regurgitation (MR) can lead to underestimation of AS severity and worse clinical…”
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Ex vivo evaluation of personal protective equipment in hands-on defibrillation by Stephens, Andrew F., Šeman, Michael, Nehme, Ziad, Voskoboinik, Aleksandr, Smith, Karen, Gregory, Shaun D., Stub, Dion

“…Defibrillation guidelines recommend avoiding patient contact during shock delivery. However, hands-on defibrillation (compressions during shock) and manual…”
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HeartMate 3 for Heart Failure with Preserved Ejection Fraction: In Vitro Hemodynamic Evaluation and Anatomical Fitting by Langer, Nina, Stephens, Andrew F., Šeman, Michael, McGiffin, David, Kaye, David M., Gregory, Shaun D.

“…Heart failure with preserved ejection fraction (HFpEF) constitutes approximately 50% of heart failure (HF) cases, and encompasses different phenotypes. Among…”
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SHAP Model Explainability in ECMO – PAL mortality prediction: A Critical Analysis. Author’s reply by Stephens, Andrew F., Šeman, Michael, Hodgson, Carol L., Gregory, Shaun D.

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ECMO PAL: using deep neural networks for survival prediction in venoarterial extracorporeal membrane oxygenation by Stephens, Andrew F., Šeman, Michael, Diehl, Arne, Pilcher, David, Barbaro, Ryan P., Brodie, Daniel, Pellegrino, Vincent, Kaye, David M., Gregory, Shaun D., Hodgson, Carol

“…Purpose Venoarterial extracorporeal membrane oxygenation (VA-ECMO) is a complex and high-risk life support modality used in severe cardiorespiratory failure…”
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Rotary Ventricular Assist Device Control With a Fiber Bragg Grating Pressure Sensor by Stephens, Andrew F., Busch, Andrew, Salamonsen, Robert F., Gregory, Shaun D., Tansley, Geoffrey D.

“…Current ventricular assist devices (VADs) are rotary blood pumps used to treat end-stage heart failure. VADs are operated at a constant speed that is manually…”
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A novel fibre Bragg grating pressure sensor for rotary ventricular assist devices by Stephens, Andrew F., Busch, Andrew, Salamonsen, Robert F., Gregory, Shaun D., Tansley, Geoffrey D.

“…[Display omitted] •A novel fibre Bragg grating pressure sensor was developed for ventricular assist devices.•The sensor was found to have acceptable…”
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Hemodynamics of small arterial return cannulae for venoarterial extracorporeal membrane oxygenation by Stephens, Andrew F., Wickramarachchi, Avishka, Burrell, Aidan J. C., Bellomo, Rinaldo, Raman, Jaishankar, Gregory, Shaun D.

“…Background Venoarterial extracorporeal membrane oxygenation (ECMO) provides mechanical support for critically ill patients with cardiogenic shock. Typically,…”
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Intra-aortic Balloon Pump Use With Extra Corporeal Membrane Oxygenation—A Mock Circulation Loop Study by Farag, James, Stephens, Andrew F., Juene Chong, W., Gregory, Shaun D., Marasco, Silvana F.

“…Venoarterial extracorporeal membrane oxygenation (ECMO) is used in cardiogenic shock refractory to inotropic support and intra-aortic balloon pump (IABP)…”
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Use of Sutureless Valve in Aortic Root Enlargement by Marasco, Silvana F., Banham, Taylah, Gregory, Shaun D., Vu, Tony, Stephens, Andrew F.

“…The small aortic annulus is a surgical challenge in patients undergoing aortic valve replacement which may lead to patient prosthesis mismatch. Management…”
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Smaller Return Cannula in Venoarterial Extracorporeal Membrane Oxygenation Does Not Increase Hemolysis: A Single-Center, Cohort Study by Joyce, Patrick R, Hodgson, Carol L, Bellomo, Rinaldo, Gregory, Shaun D, Raman, Jaishankar, Stephens, Andrew F, Taylor, Kieran, Paul, Eldho, Wickramarachchi, Avishka, Burrell, Aidan

“…The aim of this study was to explore the association between arterial return cannula diameter and hemolysis during peripheral VA ECMO. We identified 158 adult…”
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Flow capabilities of arterial and drainage cannulae during venoarterial extracorporeal membrane oxygenation: A simulation model by Wickramarachchi, Avishka, Burrell, Aidan J C, Joyce, Patrick R, Bellomo, Rinaldo, Raman, Jaishankar, Gregory, Shaun D, Stephens, Andrew F

“…Large cannulae can increase cannula-related complications during venoarterial extracorporeal membrane oxygenation (VA ECMO). Conversely, the ability for small…”
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Estimation of Left Ventricular Stroke Work for Rotary Left Ventricular Assist Devices by Wu, Eric L., Maw, Martin, Stephens, Andrew F., Stevens, Michael C., Fraser, John F., Tansley, Geoffrey, Moscato, Francesco, Gregory, Shaun D.

“…Continuous monitoring of left ventricular stroke work (LVSW) may improve the medical management of patients with rotary left ventricular assist devices (LVAD)…”
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The Importance of Venous Return in Starling‐Like Control of Rotary Ventricular Assist Devices by Stephens, Andrew F., Gregory, Shaun D., Salamonsen, Robert F.

“…Rotary ventricular assist devices (VADs) are less sensitive to preload than the healthy heart, resulting in inadequate flow regulation in response to changes…”
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Computational modelling of valvular heart disease: haemodynamic insights and clinical implications by Šeman, Michael, Stephens, Andrew F., Kaye, David M., Gregory, Shaun D., Stub, Dion

“…An aging population and an increasing incidence of cardiovascular risk factors form the basis for a global rising prevalence of valvular heart disease (VHD)…”
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The effect of arterial cannula tip position on differential hypoxemia during venoarterial extracorporeal membrane oxygenation by Wickramarachchi, Avishka, Burrell, Aidan J C, Stephens, Andrew F, Šeman, Michael, Vatani, Ashkan, Khamooshi, Mehrdad, Raman, Jaishankar, Bellomo, Rinaldo, Gregory, Shaun D

“…Interaction between native ventricular output and venoarterial extracorporeal membrane oxygenation (VA ECMO) flow may hinder oxygenated blood flow to the…”
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In Vitro Evaluation of an Immediate Response Starling‐Like Controller for Dual Rotary Blood Pumps by Stephens, Andrew F., Stevens, Michael C., Gregory, Shaun D., Kleinheyer, Matthias, Salamonsen, Robert F.

“…Rotary ventricular assist devices (VADs) are used to provide mechanical circulatory support. However, their lack of preload sensitivity in constant speed…”
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Comparison of Circulatory Unloading Techniques for Venoarterial Extracorporeal Membrane Oxygenation by Stephens, Andrew F., Wanigasekara, Devindi, Pellegrino, Vincent A., Burrell, Aidan J.C., Marasco, Silvana F., Kaye, David M., Steinseifer, Ulrich, Gregory, Shaun D.

“…Left ventricular (LV) distention and pulmonary congestion are major complications inherent to venoarterial extracorporeal membrane oxygenation (ECMO). This…”
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Physiological principles of Starling-like control of rotary ventricular assist devices by Stephens, Andrew F, Gregory, Shaun D, Burrell, Aidan J C, Marasco, Silvana, Stub, Dion, Salamonsen, Robert F

“…: This review explores the Starling-like physiological control method (SLC) for rotary ventricular assist devices (VADs) for severe heart failure. The SLC,…”
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HeartWare HVAD Flow Estimator Accuracy for Left and Right Ventricular Support by Stephens, Andrew F., Mapley, Martin, Wu, Eric L., Fraser, John F., Steinseifer, Ulrich, Bartnikowski, Nicole, Gregory, Shaun D.

“…This study investigated the accuracy of the HeartWare HVAD flow estimator for left ventricular assist device (LVAD) support and biventricular assist device…”
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