Laparoscopic Appendectomy — How It Works, Benefits & Recovery — Procedure Guide, Recovery & Risks | MyMedicPlus

Laparoscopic appendectomy is the minimally invasive surgical removal of the appendix — a small, finger-shaped pouch attached to the large intestine at the right lower quadrant — using a camera (laparoscope) and specialised instruments inserted through small incisions (ports) in the abdominal wall. It is the most commonly performed emergency abdominal operation globally and has become the gold standard treatment for acute appendicitis since laparoscopic techniques demonstrated superiority over open (conventional) appendectomy in multiple randomised trials. The appendix is a vestigial structure with no established essential function in adults; its removal carries no long-term physiological consequences. Laparoscopic appendectomy is performed by general or gastrointestinal surgeons in hospital operating theatres under general anaesthesia. The procedure typically takes thirty to sixty minutes and results in three small scars (five to twelve millimetres each) rather than the four to seven centimetre flank or midline incision required for open appendectomy. Benefits over open surgery include reduced post-operative pain, fewer wound infections, shorter hospital stay, faster return to normal activity and work, and improved cosmetic outcomes. In cases of perforated appendicitis with peritonitis, laparoscopic appendectomy allows thorough abdominal irrigation of purulent contamination across all four quadrants of the peritoneal cavity, which is technically advantageous over the limited access of an open approach.

Laparoscopic appendectomy is indicated for confirmed or high-probability acute appendicitis and selected cases of appendiceal pathology. The primary indication is acute appendicitis — bacterial infection and obstruction of the appendix lumen causing progressive inflammation that, if untreated, leads to perforation and peritonitis. Diagnosis is based on clinical assessment (right lower quadrant pain migrating from the umbilicus, anorexia, nausea, fever, Rovsing's sign, McBurney's point tenderness), elevated white cell count and CRP, and imaging — ultrasound in children and women of reproductive age, CT abdomen in adults where clinical diagnosis is uncertain. The Alvarado score (score 7–10 indicates high probability) and Appendicitis Inflammatory Response (AIR) score are validated diagnostic tools. Additional indications include interval appendectomy after successful non-operative management of a periappendiceal abscess, incidental appendectomy for mucocele, or removal of carcinoid tumour of the appendix found incidentally. The laparoscopic approach is preferred for obese patients, women of reproductive age (to allow concurrent gynaecological inspection for differential diagnosis), and patients with perforated appendicitis. Contraindications to laparoscopic approach include extreme haemodynamic instability precluding safe pneumoperitoneum, dense adhesions from multiple prior abdominal surgeries, and significant uncorrectable coagulopathy.

After induction of general anaesthesia, the patient is positioned supine on the operating table. The abdomen is prepared and draped. The standard three-port technique uses three incisions: a ten to twelve millimetre umbilical port for the laparoscope (camera), a five millimetre port in the left iliac fossa, and a five millimetre port in the suprapubic region. Carbon dioxide gas is insufflated into the abdominal cavity (pneumoperitoneum) at a pressure of twelve to fifteen millimetres of mercury via a Veress needle or Hasson open technique at the umbilical port. The laparoscope is inserted, and the abdomen is systematically inspected. The patient is tilted head-down and to the left (Trendelenburg and left lateral tilt) to shift the small bowel away from the right iliac fossa. The appendix is identified and mobilised; the mesoappendix containing the appendicular artery is divided using a harmonic scalpel, LigaSure, or surgical clips and diathermy. The appendix base is secured with two endoloops (absorbable ligatures) or a linear cutting stapler, and the appendix is divided between them. The specimen is placed in a retrieval bag and extracted through the twelve millimetre umbilical port. The abdominal cavity is irrigated with warm saline if purulent fluid is present. Ports are removed under vision, and fascial defects at ten millimetre or larger port sites are closed with absorbable sutures to prevent port-site hernia. Skin is closed with absorbable subcuticular sutures.

Laparoscopic appendectomy achieves superior outcomes to open appendectomy across most clinical metrics. A Cochrane systematic review (Sauerland et al.) found that laparoscopic appendectomy is associated with a fifty percent reduction in wound infection rate (three percent versus seven percent for open), significantly less post-operative pain with reduced analgesia requirements, twenty to thirty percent shorter hospital stay (mean 1.5 versus 2.5 days), faster return to work (mean seven versus ten days), and markedly better cosmesis with three small scars instead of a larger flank incision. Conversion to open surgery is required in three to five percent of laparoscopic cases, most commonly in cases of severe inflammation, dense pelvic adhesions, or uncertainty about anatomy. Outcomes for perforated appendicitis are particularly favourable laparoscopically, with studies showing lower abscess formation rates with thorough irrigation compared to equivalent open cases. Overall mortality for uncomplicated appendicitis is below zero point one percent in high-income countries. Cure rates are essentially one hundred percent for uncomplicated appendicitis following appendectomy. Negative appendectomy rate — surgery performed on a normal appendix — has fallen to three to seven percent with routine pre-operative CT imaging, compared to fifteen to twenty percent in the pre-CT era.

Laparoscopic appendectomy is among the safest emergency abdominal operations but carries a defined complication profile. Wound infection at port sites occurs in one to three percent — substantially lower than the five to ten percent wound infection rate after open appendectomy. Intra-abdominal abscess (pelvic or right iliac fossa collection) occurs in three to five percent of perforated appendicitis cases and may require CT-guided drainage. Stump appendicitis — recurrence of appendicitis in a residual appendiceal stump left behind — is rare (below one percent) and necessitates re-operation. Port-site hernias occur in less than one percent when fascial defects at large port sites are adequately closed. Injury to adjacent structures during dissection — including the caecum, terminal ileum, right ureter, and iliac vessels — is rare (below one percent) but serious, potentially requiring conversion to open surgery and bowel repair. Incomplete appendix base closure resulting in faecal fistula is rare. Iatrogenic small bowel obstruction from post-operative adhesions occurs in approximately two percent over the long term — lower than after open surgery. Risks related to general anaesthesia include aspiration, pulmonary complications, and deep vein thrombosis (DVT), mitigated by early mobilisation and pharmacological thromboprophylaxis. Carbon dioxide pneumoperitoneum may cause transient post-operative shoulder pain from subphrenic gas irritating the diaphragm, resolving in twenty-four to forty-eight hours.

After laparoscopic appendectomy, patients spend one to two hours in the recovery area before transfer to the ward. Oral fluids are permitted as soon as the patient is alert and able to swallow. A light diet is introduced on the evening of surgery or the following morning. Most patients with uncomplicated appendicitis are discharged home within twenty-four to forty-eight hours. Analgesia typically consists of regular paracetamol and ibuprofen with tramadol or codeine for breakthrough pain; opioid requirements are substantially less than after open appendectomy. Port-site dressings are kept dry for forty-eight to seventy-two hours. Patients may shower once wounds are healed at forty-eight to seventy-two hours if dressings are removed. Light walking is encouraged from the day of surgery. Return to sedentary work is typically possible within one to two weeks, and strenuous physical activity or heavy lifting is restricted for three to four weeks until fascial healing is complete. Driving is permitted once full upper limb control is restored and emergency braking can be performed comfortably — typically seven to fourteen days post-operatively. Patients should seek urgent medical attention for fever above thirty-eight degrees Celsius beyond post-operative day two, increasing abdominal pain, inability to tolerate fluids, or signs of wound infection (erythema, discharge, swelling).