Inhibition of these receptors prevents pulmonary vasculature constriction and thus decreases pulmonary vascular resistance.
2.
When the newborn takes his or her first breath, the lungs open and pulmonary vascular resistance decreases.
3.
Tadalafil is believed to increase pulmonary artery vasodilation, and inhibit vascular remodeling, thus lowering pulmonary arterial pressure and pulmonary vascular resistance.
4.
Individuals with a pulmonary vascular resistance ( PVR ) less than 7 wood units show regression of symptoms ( including NYHA functional class ).
5.
Pulmonary vascular resistance ( PVR ) also depends on the lung volume, and PVR is lowest at the functional residual capacity ( FRC ).
6.
At birth the neonate begins breathing and the associated decrease in pulmonary vascular resistance leads to a reversal of the pressure differential between the atria.
7.
In a fetus, there is high pulmonary vascular resistance and low pulmonary blood flow as the fetus does not use the lungs for oxygen transfer.
8.
When the baby is born, the lungs are needed for oxygen transfer and need high blood flow which is encouraged by low pulmonary vascular resistance.
9.
In patients with pulmonary arterial hypertension, the pulmonary vascular lumen is decreased as a result of vasoconstriction and vascular remodeling, resulting in increased pulmonary artery pressure and pulmonary vascular resistance.
10.
These low oxygen levels increases the pulmonary vascular resistance ( PVR ) and thus improve blood flow to the rest of the body, due to the greater pressure difference between the lungs and body.
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