ترجمه آماده – پویایی جریان بطن با طول کانول ورودی LVAD متفاوت

The geometry of a severely dilated LV, end systolic volume of 460 ml, was reconstructed from computed tomography (Liao et al., 2016). A 40 and 30 mm diameter tube represented the left atrium and aorta, respectively, with a parametric MV placed adjacent to the aortic valve (Domenichini and Pedrizzetti, 2014; Liao et al., 2016; Mao et al., 2008). The closed MV state was a 1 mm plane above the MV.
The apex was used as the insertion length reference point. The cannula axis intersected the apex and MV origin. Measured from a HeartWare HVAD, the inflow cannula was 27 mm between the tip and sewing ring attachment. Outer and inner diameters were 20.5 and 12.6 mm, respectively. The tip had a 3 mm fillet.
Four insertion lengths were investigated: based on a case of apical hypertrophic cardiomyopathy (5 mm – I5), the higher (19 mm – I19) and lower (24 mm – I24) ranges of reported apical thicknesses, and an experimental insertion length (50 mm – I50). The first three cases correspond to apical thicknesses of 22, 8 and 3 mm, respectively (Kawel et al., 2012; Lang et al., 2015).