Lap cholecystectomy

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Laparoscopic Cholecystectomy

Overview

Laparoscopic cholecystectomy (LC) is the gold-standard surgical treatment for symptomatic gallstone disease. It was first performed by Muhe in 1985 (using a direct scope) and then popularized by Mouret in 1987. It is now one of the most commonly performed general surgery operations worldwide, with a reported mortality of 0.1–0.5% and morbidity of 2–3%. - Sabiston Textbook of Surgery, p. 1838

Indications

Biliary colic (symptomatic cholelithiasis) - the most common indication
Acute cholecystitis (early LC is the gold standard; higher conversion rate but safe in experienced hands)
Biliary pancreatitis (mild-moderate; LC should be performed during the same admission or within 2 weeks)
Chronic cholecystitis
Gallbladder polyps (>1 cm or symptomatic)
Biliary dyskinesia

Contraindications

Absolute (Maingot's Abdominal Operations)

Contraindication	Notes
Unable to tolerate general anesthesia	GA with muscle relaxation is mandatory
Refractory coagulopathy	Cannot achieve hemostasis
Suspicion of gallbladder carcinoma	Mandates open resection; gallbladder perforation (20-30% of LC) risks intraperitoneal dissemination

Relative

Contraindication	Notes
Previous upper abdominal surgery	Higher adhesions, higher conversion rate
Cirrhosis / portal hypertension	Risk of bleeding from portal collaterals
Cholangitis / diffuse peritonitis	Higher conversion rate; emergency laparotomy often needed
COPD	Impaired CO₂ exchange from pneumoperitoneum
Morbid obesity	Technical difficulty; higher conversion
Pregnancy	2nd trimester preferred; insufflation <12 mmHg; use laparoscopic ultrasound instead of cholangiogram to limit fetal radiation; fetal heart monitoring perioperatively

Preoperative Preparation

General anesthesia with full muscle relaxation
Supine positioning, one arm tucked (to allow intraoperative cholangiogram if needed)
Orogastric tube to decompress stomach
Foley catheter if prolonged surgery anticipated
Prep abdomen and lower chest to allow for open conversion if needed
Patient secured in steep reverse Trendelenburg position

Port Placement (Standard 4-Port Technique)

Laparoscopic cholecystectomy port placement and OR team positioning

Port placement for laparoscopic cholecystectomy. The 12-mm umbilical port serves for camera and specimen extraction; three 5-mm ports are placed in the right anterior axillary line, right midclavicular line, and subxiphoid position. - Sabiston Textbook of Surgery, p. 1839

Port	Size	Purpose
Umbilical (periumbilical)	12 mm	Camera port; specimen extraction
Right anterior axillary line	5 mm	Fundus retraction (cephalad toward right shoulder)
Right midclavicular line	5 mm	Infundibulum retraction (inferolateral)
Subxiphoid	5 mm	Dissection and clip application

Alternative: Modified French position - patient in split-leg position; subxiphoid port for fundus retraction; working ports in both upper quadrants.

Operative Steps

1. Fundus Retraction and Exposure

The gallbladder fundus is grasped and retracted cephalad (toward right shoulder)
The infundibulum/Hartmann's pouch is retracted inferolaterally to open the hepatocystic triangle (Triangle of Calot)
Adjacent adherent structures (omentum, duodenum, colon) are bluntly peeled down

2. Critical View of Safety (CVS)

The critical view of safety (Strasberg's CVS) is the key safety measure to prevent bile duct injury:

Critical view of safety - two structures entering the gallbladder

Critical view of safety: exactly two and only two structures entering the gallbladder (cystic duct and cystic artery). - Sabiston Textbook of Surgery, p. 1839

CVS requires all three of the following:

Two and only two structures entering the gallbladder (cystic duct + cystic artery)
Lower one-third of the gallbladder dissected off the liver (cystic plate visible)
Hepatocystic triangle completely cleared of fat and fibrous tissue

Calot's node (lymph node of Calot): A lymph node overlying the cystic artery is a useful landmark. Limiting peritoneal division to the gallbladder side of this node helps minimize CBD injury risk.

3. Clipping and Division

Clips applied to the cystic duct and cystic artery
Both structures transected between clips
Gallbladder dissected off the liver bed using electrocautery
Venous drainage from gallbladder is directly into the liver bed - excellent hemostasis required

4. Specimen Extraction

Gallbladder brought out through the umbilical port via a specimen retrieval bag
Any spilled stones must be retrieved to prevent late perihepatic abscess formation

Intraoperative Cholangiography (IOC)

Not routinely recommended by the Tokyo Guidelines, but selectively indicated when:

Anatomy is unclear or anomalous
Suspected choledocholithiasis
Gallstone pancreatitis (to confirm CBD clearance before ERCP)

Technique: A catheter is passed into the cystic duct via ductotomy; water-soluble contrast injected to opacify the biliary tree. Identifies CBD stones, anomalous anatomy, and guides biliary reconstruction.

Fluorescence Cholangiography (ICG): Indocyanine green (ICG) given IV 2-4 hours before surgery (peak biliary excretion). ICG binds plasma proteins, is taken up by hepatocytes, and excreted into bile. Under near-infrared (NIR) light, it fluoresces green and provides real-time dynamic mapping of extrahepatic biliary anatomy. No radiation required. Safe in pregnancy. Anaphylaxis rate: 0.003%. Early data suggest reduced operative time and conversion to open surgery. - Sabiston Textbook of Surgery, p. 1840

Advantages vs. Open Cholecystectomy

Advantages of LC	Disadvantages of LC
Less postoperative pain	No 3D depth perception (2D monocular view)
Smaller incisions	Reduced haptic (tactile) feedback
Better cosmesis	Adhesions/inflammation limit use
Shorter hospitalization (same-day or 1-day)	More difficult hemorrhage control
Earlier return to full activity	CO₂ insufflation complications
Lower total cost	Slightly higher bile duct injury rate

Maingot's Abdominal Operations, p. 1016

Special Considerations

Acute Cholecystitis

LC is preferred; higher conversion rate but safe when performed by experienced surgeons
Inflamed, distended gallbladder: decompress with laparoscopic needle-aspirator or 14G angiocatheter before grasping
Claw/rat-tooth graspers useful when routine graspers fail
Dome-down (fundus-first) approach may be needed when infundibular dissection is too dangerous
ICG fluorescence cholangiography helps when tissue thickness is a concern, though penetration may be limited by inflammation

Conversion to Open

Not a complication - it is sound surgical judgment
Indications: unclear anatomy, massive hemorrhage, major bile duct injury, failure to progress
Rate: approximately 5% overall; higher in acute cholecystitis

Pregnancy (2nd trimester preferred)

Insufflation pressure limited to <12 mmHg (prevent fetal hypoxia and reduced venous return)
Maternal hyperventilation with end-tidal CO₂ monitoring to prevent fetal acidosis
Fetal heart monitoring perioperatively
Use laparoscopic ultrasound instead of cholangiogram (limit radiation)
Open port insertion to avoid uterine injury

Laparoscopic Common Bile Duct Exploration (LCBDE)

Two approaches: transcystic and choledochotomy
One-stage management (LCBDE + LC) vs. two-stage (ERCP + LC): equivalent stone clearance but one-stage has lower LOS, cost, and pancreatitis rates
ERCP utilization has risen dramatically, with declining CBDE experience among trainees

Complications

Procedure-Specific

Complication	Notes
Bile duct injury	Most significant; rate ~0.4% (vs. ~0.2% open). Classic mechanism: CBD mistaken for cystic duct due to infundibular traction aligning them. Misidentification risk factors: short cystic duct, large Hartmann's pouch stone, dense inflammation. If recognized intraoperatively: primary repair ± T-tube; complete transection: end-to-end rarely advised - hepaticojejunostomy preferred
Bile leak	From cystic duct stump or aberrant duct of Luschka; managed with ERCP and stenting
Hemorrhage	Cystic artery, liver bed; trocar-related abdominal wall bleeding
Retained CBD stones	Detected on postoperative cholangiogram; managed with ERCP
Wound infection / incisional hernia	Port sites
Dropped stones	Must retrieve intraoperatively; late perihepatic abscess risk

Most serious complications occur early in the surgeon's experience. In one multivariate analysis of 8,839 LCs with 15 bile duct injuries, the predicted risk was 1.7% at case 1 vs. 0.17% at case 50 - highlighting the steep learning curve. - Maingot's Abdominal Operations

Pneumoperitoneum-Related

Complication	Mechanism
CO₂ embolism	Intravascular CO₂ entry
Vasovagal reflex	Peritoneal stretch
Cardiac arrhythmias	Hypercarbia, vagal stimulation
Hypercarbic acidosis	Impaired CO₂ exchange (especially in COPD)
Reduced venous return	Elevated intra-abdominal pressure compressing IVC

Trocar-Related

Abdominal wall hematoma (visualize each trocar site before removal)
Visceral injury (bowel, bladder - especially in closed insertion near adhesions)
Major vascular injury (aorta, IVC, iliac vessels - leave trocar in situ if major vessel injury suspected, do NOT remove before open control)

Outcomes

Mortality: 0.1-0.5%
Morbidity: 2-3%
Conversion rate: ~5% elective; higher in acute cholecystitis, previous upper abdominal surgery
Hospital stay: Same-day or 1-day for elective cases
Return to full activity: Within a few days

Sources: Sabiston Textbook of Surgery (21st/22nd ed.); Maingot's Abdominal Operations; Current Surgical Therapy 14e; Bailey and Love's Short Practice of Surgery 28th ed.

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