Pulmonary HTN Flashcards
Test #3
How many circulatory systems does the body have?
2.
Systemic-delivers O2 to body
Pulmonary-receives O2 from lungs
Causes of pulmonary HTN (Group 1)
Idiopathic
- genetic mutation
- drugs/toxins
- congenital heart
- connective tissue disorders
- HIV
- cirrhosis
Causes of Pulmonary HTN (Group 2)
Left Sided heart disease
- mitral/aortic valve disease
- left ventricle failure
Causes of pulmonary HTN (Group 3)
Lung diseases
- COPD
- pulmonary fibrosis
- sleep disorders
- long term exposure to high altitudes
Causes of pulmonary HTN (Group 4)
Chronic blood clots
Causes of pulmonary HTN (Group 5)
No clear reason
- blood disorders
- metabolic disorders
- tumors
- septal defects
Patho of pulmonary HTN
Types of HTN that occurs in arteries of lungs and right side of heart
Progressive condition
- arterioles and capillaries-narrowed, blocked, or destroyed
- vessels-inflamed, thicker and tighter
- Pressure builds and blood backs up
- Heart’s RV works harder to get blood through lungs, causing weakness and failure
Normal lung pressure
14mmHg at rest
Pulmonary HTN pressure
> 25mmHg at rest
30mmHg during exercise
Who is at risk for pulmonary HTN?
- young people-idiopathic
- overweight
- family history
- diseases mentioned
- illegal drugs-cocaine
- appetite suppressants-ephedrine
- living at high altitude
Diagnostics of pulmonary HTN
Hard to diagnose=mimics other heart/lung problems
- Echocardiogram
- CXR
- EKG
- Right cardiac cath
- Blood testing
- CT, MRI
- PFT
- Polysomnogram
- Ventilation/Perfusion (VQ)
- Oper lung biopsy
- Genetic testing
Classification of Pulmonary HTN (Class I)
No symptoms with normal activity
Classification of Pulmonary HTN (Class II)
No symptoms at rest
-fatigue, dyspnea, or chest pain with normal activity
Classification of Pulmonary HTN (Class III)
Comfortable at rest, no symptoms with physical activity
Classification of Pulmonary HTN (Class IV)
Symptoms with activity and rest
