Pulmonary HTN Flashcards
1
Q
What is pulmonary HTN?
A
Pulmonary artery pressure of 25+mmHg
2
Q
What can cause pulmonary HTN?
A
- Left heart disease- mitral pathology, LVF, LtoR shunt
- Lung parenchyma- chronic hypoxia e.g. COPD, asthma, ILDs, CF
- Hypoventilation- morbid obesity, kyphosis, scoliosis, MND
3
Q
How does chronic hypoxia cause pulmonary HTN?
A
1- Chronic hypoxia
2- Pulmonary vessels may constrict
3- Buildup of pressure due to reduced bloodflow
4
Q
What can pulmonary HTN cause?
A
Cor pulmonale
5
Q
What are the symptoms of cor pulmonale?
A
- Dyspnoea
- Fatigue
- Syncope
6
Q
Name 5 signs of cor pulmonale.
A
- Raised JVP
- Left para sternal heave
- Loud P2 +- S3
- Murmurs (PR or TR)
- Ascites and peripheral oedema
7
Q
What might an ABG show in cor pulmonale?
A
- Hypoxia
- Hypercapnia
Respiratory acidosis
8
Q
How is cor pulmonale managed?
A
Treat underlying cause
- LTOT, CCB for reducing pulmonary vascular resistance
- ACEi/Diuretics for heart failure
- Heart/lung transplant
9
Q
What is the 5 year survival for cor pulmonale?
A
50%
