pulmonary vascular resistance वाक्य
उदाहरण वाक्य
मोबाइल
- Inhibition of these receptors prevents pulmonary vasculature constriction and thus decreases pulmonary vascular resistance.
- When the newborn takes his or her first breath, the lungs open and pulmonary vascular resistance decreases.
- Tadalafil is believed to increase pulmonary artery vasodilation, and inhibit vascular remodeling, thus lowering pulmonary arterial pressure and pulmonary vascular resistance.
- Individuals with a pulmonary vascular resistance ( PVR ) less than 7 wood units show regression of symptoms ( including NYHA functional class ).
- Pulmonary vascular resistance ( PVR ) also depends on the lung volume, and PVR is lowest at the functional residual capacity ( FRC ).
- 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.
- 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.
- 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.
- 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.
- 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.
- Stage 2 of the Norwood procedure is separation of the systemic and pulmonary circulation once pulmonary vascular resistance has fallen, by removing the aortopulmonary shunt followed by creation of a bidirectional SVC-pulmonary shunt, also known as a Glenn procedure.
- Inhaled nitric oxide vasodilates, decreasing pulmonary arterial pressure ( PAP ) and pulmonary vascular resistance ( PVR ) without affecting systemic artery pressure because it is rapidly inactivated by hemoglobin, and improves oxygenation by redistributing pulmonary blood flow to ventilated areas of lung.
- Several factors inhibit this process including increased cardiac output, hypocapnia, hypothermia, acidosis / alkalosis, increased pulmonary vascular resistance, inhaled anesthetics, calcium channel blockers, positive end-expiratory pressure ( PEEP ), high-frequency ventilation ( HFV ), isoproterenol, nitric oxide, and vasodilators.
- Since the right ventricle generates far lower pressures than the left ventricle ( approximately 20 mmHg versus around 120 mmHg, respectively, in the healthy individual ) but nonetheless generates cardiac output exactly equal to the left ventricle, this means that a small increase in pulmonary vascular resistance causes a large increase in amount of work the right ventricle must perform.
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