Venous return with knee-chest position and squatting in tetralogy of Fallot.
D000293:Adolescent; D000328:Adult; D001775:Blood Circulation; D001783:Blood Flow Velocity; D002648:Child; D002675:Child, Preschool; D005080:Exercise Test; D006801:Humans; D000860:Hypoxia / Q000150:complications / Q000503:physiopathology; D007223:Infant; D007866:Leg / Q000098:blood supply; D005082:Physical Exertion; D011187:Posture; D011652:Pulmonary Circulation; D013575:Syncope / Q000517:prevention & control; D013771:Tetralogy of Fallot / Q000503:physiopathology*; D014655:Vascular Resistance; D014680:Veins / Q000503:physiopathology*; D014682:Vena Cava, Inferior