Pulmonary HTN Flashcards

1
Q

What is pulmonary HTN

A

Sustained increase of pressure in the pulmonary circuit

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2
Q

How much is this sustained increase in pressure

A

> 25mmHg

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3
Q

Why is the pulmonary circuit usually safe from HTN

A

It is an area of low resistance
fairly distributed
if there is an increase of CO there is usually a minimal increase in the pulmonary pressure

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4
Q

What causes the increase in pressure

A

vasoconstriction

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5
Q

Etiology is primarily what…

A

cardio and pulm problems

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6
Q

what are the three et categories

A
  1. increase in pulm volume (septal defect = increase in blood being pumped to the pulmonary artery)
  2. hypoxemia (when there is minimal oxygen getting to the lungs they vast constrict to keep what o2 there is = increase in pressure)
  3. increase in pulm venous pressure (LV disfunction)
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7
Q

Manifestations of Pulm HTN

A

dyspnea, syncope, chest pain upon exertion
those of R HF
Fatigue

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8
Q

What will a chest X-ray reveal

A

RV hypertrophy and distended pulmonary arteries

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9
Q

treatment for pulm HTN

A

fix hypoxemia for a better prognosis

vasodilators (systemic as you can localize dilators)

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