Pulmonary hypertension can result in impairment which can be quantified based on criteria developed by the AMA.
Parameters:
(1) functional class for congestive heart failure
(2) symptoms and response to therapy
NYHA Functional Class (1964) |
Symptoms |
Impairment of the Whole Person |
Class 1 |
asymptomatic |
0 - 9% |
Class 1 |
asymptomatic with moderate dietary adjustment and drug therapy |
10 – 29% |
Class 2 |
symptoms partially responsive to moderate dietary adjustment and drug therapy |
30 – 49% |
Class 3 or 4 |
symptoms unresponsive to maximal dietary and medical therapy |
50 – 100% |
where:
• According to the AMA table, functional Class 2 indicates symptomatic when activity is greater than normal. In the current NYHA classification, a patient with Class 2 heart failure has symptoms with ordinary activities. The 1964 Class 2 corresponds to the current Class 1. This reflects the difference between the earlier classification and the revised classification introduced in later editions.
• Patients who have recovered from surgery for hypertrophic cardiomyopathy or who have had a heart transplantation are classified based
Specialty: Sports Medicine & Rehabilitation, Cardiology, Emergency Medicine