| Total (N = 85) | Group A (N = 56) | Group B (N = 29) |
Idiopathic PAH | 1 (1.17%) | 0 | 1 (3.4%) |
Rheumatic heart disease | 30 (35.29%) | 20 (35.71%) | 10 (34.48%) |
Congenital heart disease | 24 (28.23%) | 14 (25%) | 10 (34.48%) |
COPD | 10 (11.76%) | 5 (8.9%) | 5 (17.24%) |
Cardiomyopathy | 7 (8.23%) | 4 (7.14%) | 3 (10.34%) |
Miscellaneous | 13 (15.29%) | 8 (14.28%) | 5 (17.24%) |