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Flow drag has attracted attention as the dominant hydrodynamic force causing systolic anterior motion (SAM). SAM begins when the flow velocity in the outflow tract is low, precluding the Venturi… Click to show full abstract
Flow drag has attracted attention as the dominant hydrodynamic force causing systolic anterior motion (SAM). SAM begins when the flow velocity in the outflow tract is low, precluding the Venturi effect. It also may begin during isovolumic systole before the aortic valve opens. In this study, the authors presented a case using the Ross procedure during which SAM developed and was difficult to relieve. Left ventricular blood flow and flow energy loss were analyzed using real-time vector flow mapping, a novel flow visualization technology. Vector flow mapping revealed that both early systolic flow impacting the
Journal Title: Journal of cardiothoracic and vascular anesthesia
Year Published: 2017
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