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机译:Correlation Between Ultrasound-Measured Diameter and Blood Flow Velocity of the Internal Jugular Veins with the Preoperative Blood Volume in Elderly Patients
Zhejiang Univ;
Diameter of the internal jugular vein; Respiratory variation index; Blood flow velocity; Preoperative blood volume; CENTRAL VENOUS-PRESSURE; VENA-CAVA DIAMETER; FLUID RESPONSIVENESS; RESPIRATORY VARIATION; THERAPY;