title: A study of a noninvasive method for measuring central venous pressure during general anesthesia.
mesh_terms: D000328:Adult; D000368:Aged; D000403:Airway Resistance; D000768:Anesthesia, General; D001795:Blood Pressure Determination / Q000295:instrumentation / Q000379:methods*; D002496:Central Venous Pressure; D004947:Esophagus / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture