All patients underwent laparoscopic anatomic left hemihepatectomy using the newly improved operation method in hepatobiliary combined pancreatic Surgery department of Nanchang University Second Affiliated Hospital since October 2021 to October 2022 were continuously enrolled in this study. All patients had surgical indications and no contraindications. Patients and their families were informed of the risks of surgery before surgery and informed consent was obtained. Inclusion criteria: Patients with left intrahepatic cholangiolithiasis clearly diagnosed by ultrasound, contrast-enhanced computed tomography (CT) or magnetic resonance cholangiopancreatography (MRCP) (Fig.1) examination, and laparoscopic anatomic left hepatectomy was determined after discussion; Child-Pugh liver function is grade A; Complete clinical data. Exclusion criteria: Cholangiocarcinoma; Stones confined to the left lateral lobe of liver; Severe cardiopulmonary and other important organ dysfunctions.
Operative procedure
Step1: After endotracheal intubation and general anesthesia, patients were placed in the supine position and in a dorsal, elevated position (anti‑Trendelenburg position). A vertical incision with a length of 1cm was taken below the umbilicus to establish pneumoperitoneum, and the pressure was set at 12mm-Hg. Laparoscopy probed the liver surface, bile duct, gallbladder and other abdominal and pelvic organs. After no other obvious abnormalities were observed, Trocars were inserted with 5-holes puncture method (under xiphoid process, 2cm below costal margin of left and right midclavicular line, 2cm below costal margin of left and right axillary front) under direct view.
Step2: Cholecystectomy.
Cholecystectomy could be performed first for patients with gallstone.
Step3: Anatomic left hemihepatectomy through left glissonian pedicle.
The round liver ligament, falciform ligament, left coronary ligament and left triangle ligament were detached to the second portal, and the left hepatic vein (LHV) and middle hepatic vein (MHV) root were dissected carefully. A hilus block band was preseted through the Winslow hole. Before the liver was cutted, the stones and MHV were located by ultrasound, and pretangency was marked with electrocantery along the left side of the MHV on the liver surface. Tightening the blocking to band block the first hilus hepatis (Fig.2a). The liver parenchyma was dissected along the pre-tangent line to head side (Fig.2b). The MHV was exposed, the main trunk of MHV was carefully detached, and the liver parenchyma was separated with the guidance of MHV walking, so as to expose the full truck of MHV as much as possible (Fig.2c). In the process of hepatotomy, if there are small vessels, they will be cutted after being clamped with hem-o-lok clips. The left glissonian pedicle was exposed (Fig.2d). If intraoperative ultrasound is not available, anatomic left hemihepatectomy can be performed via cephalic approach(Fig.2e). On the basis of full dissociation of the second hilum, dissecting the liver parenchyma along the left side of MHV root. After fully exposing the left glissonian pedicle removing the stones and severing pedicle as described above.
Step4: Bile duct exploration via anterior wall of left bile duct.
An transverse incision about 1cm on the anterior wall of the left hepatic duct was made with electrocantery as far as possible away from the cnfluence of the left and right hepatic ducts, and bile spillover was observed (Fig.2f). Choledochoscope was placed to explore the bile duct from the incision to common bile duct. When choledochoscope arrived at the confluence of the left and right hepatic ducts, turning to the right hepatic duct and exploring the common bile duct finally. Combined with stone forceps, stone basket, electrohydraulic shockwave lithotripsy(ESL), water flushing and other methods to remove all stones on the way (Fig.2g). To ensure that there are no stones on the separation path of Endo-GIA. Detecting bile duct again by ultrasonud probe again to confirm that there was no stone residue in the separation path of Endo-GIA. The left half of the liver was detached by two Endo-GIA at the root of left glissonian pedicle (Fig.2h) and the root of LHV (Fig.2i).
Step5: Two abdominal drainage tubes were placed in the liver section and the Winslow hole respectively. No blood and bile leakage observed in the liver section, the observation hole was extended to 3cm and the specimen was removed. In the end, operators exited the laparoscope and sutured each puncture holes. Operation was completed.
After surgery, blood routine examinations, liver function, and electrolytes were performed on the 1st postoperative day, and then every 3 days again. The juice of the abdominal drainage tubes needed to be observed closely. When the clear drainage juice extracted from drainage tubes was less than 10mL/d, the abdominal drainage tubes could be removed.
Intermittent hepatic protal occlusion applied to operations. Our team was used to blocking the first protal hilus for 15minutes, and then releasing the blocking band for 5minutes, repeating if necessary. In the process of liver resection, infusion speed was slowed down, and central venous pressure (CVP) was controlled as 0-5cmH2O.
Observation targets
(1) General information (gender, age, BMI, preoperative diagnosis) (Table. 1);
Table.1 General information
|
Gender
|
Age(year)
|
BMI(Kg/m^2)
|
Pre-operative diagnosis
|
1
|
male
|
33
|
22.98
|
hepatolithiasis, hepatatrophy
|
2
|
female
|
51
|
22.85
|
hepatolithiasis, cholecystolithiasis
|
3
|
female
|
40
|
20.93
|
hepatolithiasis
|
4
|
female
|
50
|
28.13
|
hepatolithiasis
|
5
|
male
|
52
|
24.05
|
choledocholithiasis,hepatolithiasis
|
6
|
male
|
46
|
26.21
|
hepatolithiasis,
|
7
|
female
|
62
|
21.17
|
hepatolithiasis,cholecystolithiasis
|
8
|
male
|
57
|
23.55
|
choledocholithiasis,hepatolithiasis
|
9
|
female
|
61
|
27.36
|
choledocholithiasis,hepatolithiasis
|
10
|
male
|
57
|
20.49
|
hepatolithiasis,hepatatrophy
|
11
|
female
|
49
|
23.20
|
hepatolithiasis,cholecystolithiasis
|
12
|
female
|
42
|
22.42
|
hepatolithiasis
|
(2) Operation-related information (hepatic function index, postoperative complications, drainage tubes removal time, postoperative hospital stay) (Table 2);
(3) Postoperative pathological diagnosis (Table 2).
Table.2 Operation-related information
No.
|
intraoperative blood loss (mL)
|
operation time (minutes)
|
Postoperative DBIL1 (μmol/L)
|
Postoperative ALB2 (g/L)
|
postoperative complications
|
drainage tubes removal time4 (days)
|
postoperative hospital stay (days)
|
Postoperative pathological diagnosis
|
1
|
100
|
175
|
7.68
|
38.01
|
No
|
6 and 6
|
6
|
cholangitis, hepatatrophy
|
2
|
150
|
235
|
4.68
|
28.26
|
Hypoproteinemia3
|
5 and 8
|
8
|
cholangitis,cholecystitis
|
3
|
50
|
210
|
7.13
|
35.27
|
No
|
5 and 8
|
9
|
cholangitis
|
4
|
200
|
215
|
8.87
|
41.22
|
No
|
5 and 5
|
9
|
cholangitis
|
5
|
50
|
220
|
19.56
|
39.79
|
No
|
5 and 6
|
6
|
cholangitis
|
6
|
50
|
190
|
8.60
|
40.24
|
No
|
5 and 6
|
6
|
cholangitis
|
7
|
150
|
240
|
12.54
|
36.16
|
No
|
6 and 8
|
8
|
cholangitis,cholecystitis
|
8
|
200
|
180
|
22.17
|
36.20
|
No
|
7 and 9
|
9
|
cholangitis
|
9
|
150
|
180
|
24.56
|
38.17
|
No
|
5 and 7
|
8
|
cholangitis
|
10
|
200
|
210
|
7.82
|
40.02
|
No
|
6 and 6
|
7
|
cholangitis,hepatatrophy
|
11
|
100
|
220
|
11.55
|
38.77
|
No
|
5 and 7
|
8
|
cholangitis,cholecystitis
|
12
|
150
|
215
|
9.41
|
36.38
|
No
|
7 and 9
|
10
|
cholangitis
|
1DBIL: serum direct bilirubin; 2ALB: serum albumin; 3Hypoproteinemia: ALB (g/L) < 30; 4drainage tubes removal time (days): All patients have two drainage tubes.