Changes in whole body venous tone in surgical patients.
D000005:Abdomen / Q000601:surgery*; D001795:Blood Pressure Determination; D001811:Blood Volume Determination; D006348:Cardiac Surgical Procedures; D006334:Heart Function Tests; D006801:Humans; D011182:Postoperative Care; D014655:Vascular Resistance / Q000032:analysis; D014656:Vascular Surgical Procedures; D014680:Veins