*2.2.7 Cardiopulmonary examination*

Peripheral edema is a frequent finding in patients with obesity hypoventilation syndrome (as a manifestation of cor pulmonale) as well as in certain patients with obstructive apnea that have left ventricular heart failure. OSA can coexist with chronic obstructive pulmonary disease and asthma. Hypertension is associated with OSA. If a patient with OSA has chronic pulmonary disease, pulmonary hypertension can also be seen. Findings of polycythemia, arrhythmia, cyanosis, right heart failure, and chronic cor pulmonale can be identified [19, 25].
