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The accurate measurement of the ratio of pulmonic to systemic flow (Qp/Qs) is important in the evaluation of the patient with left-to-right intracardiac shunting, since it is often used to determine subsequent therapy. 1 The asymptomatic patient with a Qp/Qs of <1.5 usually is managed conservatively, whereas the patient with a Qp/Qs of >1.5 ...
20 wrz 2010 · Answer: Circulation in a nutshell: Normally, O2 poor (“Venous”) blood from the right side of your heart goes to the lungs where CO2 is removed and replaced with O2. This is called the ‘Pulmonary” circulation.
Left to right shunt occurs mainly during mid to late systole as ‘v’ wave of left atria is larger than right atria (Fig. 7). 8–11 The second wave of left to right shunt occur with atrial contraction. The following pattern of shunting can be appreciated in patient of ASD.
17 maj 2023 · As a PDA represents a shunt at the level of the great vessels, the degree of left‐to‐right shunting depends on the dimensions of the PDA, the ratio of PVR and SVR, the ratio of PA pressure to systemic blood pressure, and blood viscosity as determined by the hemoglobin level.
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