• Xiping Mei, Jitong Liu, Yaping Wang, Lai Wei, and Suhong Tan.
• Department of Anesthesiology, Hunan Provincial People's Hospital/First Affiliated Hospital of Hunan Normal University, 
Changsha 410005, China.
• Zhong Nan Da Xue Xue Bao Yi Xue Ban. 2019 Oct 28; 44 (10): 1163-1168.

ObjectiveTo observe the safety and impact on the short-term prognosis for patients of stroke volume variation (SVV) goal-directed fluid therapy (GDFT) in laparoscopic precision hepatectomy.
 Methods: A total of 120 patients (18-65 years old) undergoing laparoscopic precision hepatectomy were randomly divided into the fluid therapy group (group S) guided by SVV and the fluid therapy group (group C) guided by central venous pressure group (CVP), with 60 cases in each group. Mean arterial pressure (MAP) and heart rate (HR) were recorded at the following time: at home calm (T0), the operation started (T1), began to cut the liver (T2), the hepatectomy was acheived (T3), and in the end (T4). The lactic acid was measured at T0 to T4 and 1 day after surgery (T5). The amount of blood loss, urine output and fluid supplement, the incidence of intraoperative hypotension, and the use of neophryn were recorded. The recovery of liver function, Hb, and so on were also recorded.
 Results: Compared with the group C, the number of hypotension cases, the amount of blood loss and the amount of neophryn in the group S were decreased during the operation (P<0.05), while the lactic acid values in the group S were not significantly increased than those in the group C at T3 and T4 (P<0.05) and the elevation of AST, ALT, DBIL and TBIL in the group S was significantly decreased than those in the group C at 1 and 2 d after the operation (P<0.05). Hb and Hct in the group S were higher than those in the group C at 1 d after the surgery (P<0.05). Compared with the group C, the postoperative exhaust time and hospitalization time were shortened in the group S (P<0.05), and the infection rate and ICU admission rate were decreased in the group S (P<0.05).
 Conclusion: SVV-guided GDFT in laparoscopic precise hepatectomy is safe and effective. It reduces intraoperative blood loss and benefits the short-term prognosis of patients after operations. High SVV value (13%-17%) is adopted at the liver resection stage, and SVV value with 8%-12% at the end of trans-section may be used as one of intraoperative liquid therapy in laparoscopic precise hepatectomy.

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