The most commonest cause for chronic cor pulmonale is
Ref Harrison 19 th ed pg 1505 Once patients with chronic pulmonary or pulmonary vascular disease develop cor pulmonale, the prognosis worsens. Although chronic obstructive pulmonary disease (COPD) and chronic bronchitis are responsible for approximately 50% of the cases of cor pulmonale .
Recurrent pulmonary embolization
COPD
cystic fibrosis
Bronchial asthma
Respiratory system