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

Laparoscopic Heller myotomy is a minimally invasive surgical procedure that treats achalasia — a primary oesophageal motility disorder characterised by failure of the lower oesophageal sphincter (LOS) to relax during swallowing, combined with absent peristalsis in the oesophageal body. This functional obstruction causes progressive dysphagia, regurgitation of undigested food, chest pain, and weight loss. The Heller myotomy involves dividing the circular and longitudinal muscle fibres of the lower oesophagus and gastric cardia for a length of 6–8 cm (5–6 cm on the oesophagus, 1.5–2 cm on the stomach) without entering the mucosa, eliminating the high-pressure zone that prevents bolus passage. A partial fundoplication (Dor or Toupet, 180–270°) is always added to prevent gastro-oesophageal reflux (GERD) created by ablating the sphincter. Laparoscopic Heller myotomy has largely replaced open thoracotomy and thoracoscopic approaches and produces outcomes equivalent to pneumatic dilation with superior durability. Per-oral endoscopic myotomy (POEM), a newer endoscopic technique, provides equivalent dysphagia relief with higher GERD rates.

This treatment represents an important component of modern medical management, supported by clinical evidence from multiple randomised controlled trials and systematic reviews. Treatment protocols are continually refined based on emerging evidence to optimise patient outcomes while minimising treatment burden.

Patient suitability is assessed through a structured multidisciplinary evaluation incorporating clinical history, physical examination findings, and results of relevant investigations. Treatment planning considers the full clinical context including disease characteristics, patient comorbidities, functional status, and individual treatment goals to ensure the most appropriate therapeutic approach is selected for each patient.

Laparoscopic Heller myotomy is indicated for patients with confirmed achalasia who require definitive treatment beyond temporising measures. Achalasia diagnosis is established by oesophageal manometry (high-resolution manometry defining achalasia type I, II, or III), barium swallow (classic bird-beak appearance of the LOS, oesophageal dilatation), and gastroscopy (to exclude pseudoachalasia from infiltrating cardia cancer). Type II achalasia (panesophageal pressurisation) responds best to myotomy, with response rates exceeding 90%. Type III (spastic achalasia) has the poorest response to myotomy and may benefit more from POEM, which allows a longer proximal extension. Patients failing prior pneumatic dilation (either initial non-response or symptom recurrence) benefit from surgical myotomy. Previously operated patients or those with sigmoid-shaped oesophagus (advanced achalasia) are more challenging but still appropriate candidates at specialist centres. Contraindications include end-stage sigmoid mega-oesophagus requiring oesophagectomy, and patients unfit for general anaesthesia. Children with achalasia are increasingly treated with laparoscopic Heller myotomy at specialist paediatric centres.

Under general anaesthesia with the patient in the reverse Trendelenburg (head-up) position, 4–5 laparoscopic ports are placed in the upper abdomen. The liver is retracted using a fixed retractor system. The gastro-oesophageal junction is approached through the lesser omentum. The lower oesophagus is mobilised from its diaphragmatic attachments over a length of 6–8 cm, preserving the anterior and posterior vagal trunks. The phrenoesophageal membrane is divided and a penrose drain encircles the oesophagus for retraction. The myotomy begins 3–5 cm above the LOS on the oesophageal body and extends 2 cm onto the gastric cardia. Ultrasonic shears (Harmonic) or hook cautery divide the longitudinal muscle fibres first, then the circular layer. Dissection is maintained in the submucosal plane: the mucosa bulges through the myotomy cut, confirming adequate depth without perforation. The myotomy edges are gently spread to ensure complete muscle division. Completion endoscopy with water immersion confirms mucosal integrity and adequate functional opening of the LOS. A Dor fundoplication (anterior 180°) or Toupet (posterior 270°) is then performed: the gastric fundus is sutured to the myotomy edges to prevent mucosal herniation and provide reflux control. Ports are closed and the procedure complete.

The procedure is performed in an appropriately equipped facility by experienced specialist clinicians. Prior to commencement, the patient undergoes pre-procedural assessment including vital signs measurement, review of relevant investigations, and confirmation of informed consent. Intravenous access is established and monitoring equipment including ECG, pulse oximetry, and blood pressure monitoring is applied.

The procedural site is prepared according to aseptic technique standards. Anaesthesia or analgesia is administered as appropriate for the specific procedure and patient needs, ranging from local anaesthesia for minor procedures to regional or general anaesthesia for more complex interventions.

The procedure is performed under direct visualisation or image guidance as appropriate. Key technical steps are executed with attention to anatomical landmarks and patient safety parameters. Haemostasis is achieved and confirmed before completion. Post-procedural assessment includes clinical evaluation of the immediate result, complication surveillance, and documentation of the procedure.

Recovery room monitoring continues until the patient meets defined discharge criteria. Written post-procedural instructions covering activity restrictions, wound care, medication management, and symptoms requiring urgent review are provided before discharge.

Laparoscopic Heller myotomy with partial fundoplication achieves dysphagia relief in 85–92% of patients at 5 years, with good to excellent Eckardt symptom scores maintained in 75–85% at 10 years. The procedure is superior in long-term durability to single-session pneumatic dilation (5-year symptom control 75–85% for dilation versus 85–92% for surgery) — confirmed by the POET trial (2021) comparing both with POEM. Type II achalasia responds most favourably with response rates exceeding 90%. GERD rates after laparoscopic Heller myotomy with Dor fundoplication are 15–30% on objective pH testing, significantly lower than after POEM (40–50% GERD). Quality of life scores (GIQLI, SF-36) improve substantially post-operatively, with patients regaining normal weight and elimination of regurgitation. Re-treatment rates over 10 years are 5–15% for symptom recurrence, treatable by repeat pneumatic dilation, redo myotomy, or oesophagectomy in end-stage disease.

Oesophageal or gastric mucosal perforation is the most important intraoperative complication, occurring in 2–7% of laparoscopic cases (higher in previously treated or scarred oesophagi). Small perforations identified intraoperatively are repaired with sutures and an omental patch; the fundoplication buttresses the repair. Unrecognised perforation presents post-operatively as mediastinitis or pleural effusion — a serious but rare complication. Post-operative GERD affects 15–30% of patients despite fundoplication and requires long-term proton pump inhibitor therapy in some cases. Dysphagia recurrence from incomplete myotomy or scar formation at the myotomy site occurs in 10–20% and is treated by pneumatic dilation (effective in most cases) or redo surgery. Intraoperative bleeding requiring conversion to open surgery is rare (<1%) at experienced centres. Splenic injury from overly aggressive dissection is an uncommon risk. General anaesthesia and laparoscopic surgery risks (DVT, port-site hernia) apply. Long-term risk of oesophageal carcinoma in achalasia is elevated (30-fold over general population) from chronic stasis and requires endoscopic surveillance every 3–5 years after myotomy.

Hospital stay is typically 1–2 days. A water-soluble contrast oesophagogram on the morning after surgery confirms mucosal integrity and early functional result before resuming oral intake. A soft, pureed diet is followed for the first 2 weeks — small, frequent portions, eating slowly, drinking fluids with meals, and avoiding tough or stringy foods. Carbonated drinks and straws are avoided for 2 weeks. Solid foods are gradually reintroduced over weeks 2–4 as the oesophagus readjusts to bolus transit without the obstruction of the LOS. Patients are advised to remain upright for 30–60 minutes after eating and to avoid eating 2–3 hours before lying down to reduce reflux. Proton pump inhibitors (e.g., omeprazole 20 mg twice daily) are prescribed for 3–6 months and assessed for continuation based on symptomatic GERD. Return to office work is typically 2 weeks; physical activity resumes at 3–4 weeks. Follow-up oesophageal manometry and symptom scoring (Eckardt score) at 3 and 12 months assesses functional outcome. Long-term endoscopic surveillance is recommended every 3–5 years given the elevated carcinoma risk in achalasia.