Early Changes of Cardiac Structure and Function in COPD Patients With Mild Hypoxemia*.

Examines the structural and functional cardiac changes in chronic obstructive pulmonary disease (COPD) patients with mild hypoxemia. Magnetic resonance imaging of right and left ventricular structure; Role of concentric right ventricular hypertrophy as the earliest sign of right ventricle pressure overload in patients with COPD; Systolic function of the right and left ventricles.