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- W1530870800 abstract "Introduction: Pump thrombosis is a potentially life-threatening event that currently presents a diagnostic challenge. We therefore sought to explore the diagnostic utility and the association of measured cardiac computed tomography (CT) parameters in patients with LVAD malfunction due to pump thrombosis. Methods: From 2009 to 2013, 150 patients underwent placement of Heart Mate II continuous flow pump at our institution. Of these 52 patients, underwent cardiac CT with contrast either as part of a prospective protocol or for suspected malfunction. 14 patients had pump thrombosis per the INTERMACS criteria and the remaining were used as controls. Rigorous linear and area measurements for the inflow and outflow tracts of LVADs were performed. Results: The mean age of the population was 55 ± 11, 36 were male, and 28 had ischemic cardiomyopathy. Results are shown in table 1. For inflow cannula, measurement of axial area shown in figure 1, was significantly higher in the pump thrombosis group compared to the control group 31±16 cm2 vs 20 ± 12 cm2 (p=.02). Although, the difference in the acute angle for the inflow cannula relative to the perpendicular axis between the midpoint of the mitral annulus and tip of inflow cannulas was not significantly different between the two groups, there was a trend towards greater angulation in the pump thrombosis group (60 ± 6 vs 53 ± 15) and there was a positive correlation between both measurements r=0.513, p-value= 0.003. Conclusions: Area in the axial view of the ventricle at the site of the inflow cannula tip may be a surrogate for off axis placement of the cannula. This area may be helpful in predicting pump thrombosis in patients." @default.
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- W1530870800 date "2014-11-25" @default.
- W1530870800 modified "2023-09-25" @default.
- W1530870800 title "Abstract 19192: Utility of Cardiac Computed Tomography in Detecting Malposition of Left Ventricular Assist Devices Associated With Pump Thrombosis" @default.
- W1530870800 doi "https://doi.org/10.1161/circ.130.suppl_2.19192" @default.
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