Venous return curves obtained from graded series of Valsalva maneuvers.
D000005:Abdomen / Q000502:physiology; D000818:Animals; D016275:Atrial Function; D001775:Blood Circulation; D002496:Central Venous Pressure; D004285:Dogs; D005260:Female; D008170:Lung Compliance; D011312:Pressure; D012119:Respiration; D013909:Thorax / Q000502:physiology; D014636:Valsalva Maneuver