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Flow Through Open Channels Rajesh Srivastava Pdf Download
Antegrade flow is treated depending on post BDG SVC pressure, its pulsatility, and the increment obtained in systemic pressures upon snugging the MPA, which gives an idea regarding the amount of antegrade flow and, of course, the systemic O2 saturation after the BDG. The advantage of retaining some antegrade flow into the PAs through the native MPA or through a patent ductus arteriosus or a systemic to PA shunt is an augmented pulmonary blood flow and hence better systemic O2 saturations. However, this advantage comes with a tradeoff of elevation of SVC pressure and hence may need titration by means of a PA band. The other advantage is that this allows the so-called hepatic factor egress to the pulmonary circulation. Absence of exposure to this hepatic factor has been said to set the stage for early development of short-circuiting intrapulmonary vascular channels (pulmonary arteriovenous shunts) that results in systemic desaturation by not permitting pulmonary arterial blood to reach the alveoli [5, 6]. 2ff7e9595c
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