Discuss the factors that decrease Pulmonary Vascular Resistance (PVR)?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Discuss the factors that decrease Pulmonary Vascular Resistance (PVR)?

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Step 1

Heart is located in the mediastinum;about two thirds of its mass is to the left of the midline. The right ventricle receives blood from the right atrium. It separated from the left ventricle by the interventrucler septum and pumps blood through the pulmonary valves into the pulmonary trunk. Oxygeneted blood enters the left atrium from the pulmonary vains and exist through the bicuspid valve.

Step 2

when pulmonary vascular resitance deacrese the factor those are; Nitric oxide, Increase pH, Prostaglandins I2, Isoprenaline, Acetocholine, Increased PaO2 DecreasesPaCO2.

Pulmonary vascular resitance have normal parameters -Pressure =25/15 and Vascular resitance is 2.6 torr/L.

 

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