The gradient in pressure across the pulmonary vascular bed during diastole.
D000293:Adolescent; D000328:Adult; D001794:Blood Pressure; D001795:Blood Pressure Determination; D006328:Cardiac Catheterization; D002648:Child; D002675:Child, Preschool; D006330:Heart Defects, Congenital / Q000503:physiopathology*; D006331:Heart Diseases / Q000503:physiopathology*; D006339:Heart Rate; D006343:Heart Septal Defects / Q000503:physiopathology; D006349:Heart Valve Diseases / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D007223:Infant; D008875:Middle Aged; D011652:Pulmonary Circulation