A & P Pulmonary Blood Flow And Metabolism

systolic pulmonary artery pressure

diastolic pulmonary artery pressure

Mean pulmonary artery pressure

Capillary Pulmonary pressure

Systolic Pressure in R ventricle

Pulmonary wedge pressure estimates

Normal Pulmonary Wedge Pressure

pulmonary vascular resistance

ratio of total systemic vascular resistance to pulmonary vascular resistance

Mean PA pressure

Mean Aortic Pressure

LA pressure

RA pressure

pressure differences from inlet to outlet of pulmonary and systemic systems are (15-5)=10 for pulmonary and (100-2)=98 for systemic circulation which is

describe pulmonary circulation

total resistance of pulmonary circulation is less than 1/10 that of the systemic system

What causes pulmonary circulation to be a low resistance system?

Pulse pressure of pulmonary system

alveolar vessels

extra-alveolar vessels

Lung inflation collapses

lung inflation expands

transmural pressure

resistance of alveolar vessels depends on

Pressure inside alveolar vessels

pressure in alveoli

Increases in lung volume simultaneously

pulmonary vascular resistance is

pulmonary blood flow

PVR =

Increase in perfusion pressure (pulmonary artery pressure) results in

Distention

what is the predominant mechanism for fall in PVR when vascular pressures are high?

What is the primary mechanism for fall is PVR when pulmonary artery pressure is raised from low levels?

when a patient is upright, perfusion Q is greatest

distribution of blood flow os affected by

zone 1

zone 1 =

Zone 2

Zone 3

hypoxic pulmonary vasoconstriction

angiotensin 1

Bradykinin

Serotonin

norepinephrine

Leukotrienes

Prostaglandins E2 and F2 alpha

leukotrienes are generated by

prostaglandins and thromboxane A2

prostaglandins

prostaglandin E2