Pulmonary HTN Flashcards
1
Q
What is pulmonary HTN
A
Sustained increase of pressure in the pulmonary circuit
2
Q
How much is this sustained increase in pressure
A
> 25mmHg
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
4
Q
What causes the increase in pressure
A
vasoconstriction
5
Q
Etiology is primarily what…
A
cardio and pulm problems
6
Q
what are the three et categories
A
- increase in pulm volume (septal defect = increase in blood being pumped to the pulmonary artery)
- hypoxemia (when there is minimal oxygen getting to the lungs they vast constrict to keep what o2 there is = increase in pressure)
- increase in pulm venous pressure (LV disfunction)
7
Q
Manifestations of Pulm HTN
A
dyspnea, syncope, chest pain upon exertion
those of R HF
Fatigue
8
Q
What will a chest X-ray reveal
A
RV hypertrophy and distended pulmonary arteries
9
Q
treatment for pulm HTN
A
fix hypoxemia for a better prognosis
vasodilators (systemic as you can localize dilators)
