Surgical Management of Hypertrophic Pyloric Stenosis

Hypertrophic pyloric stenosis is a condition characterised by marked thickening of the pyloric muscle in neonates, leading to non-bilious projectile vomiting, electrolyte disturbances and failure to thrive. Surgical intervention remains the definitive treatment, with pyloromyotomy established as the standard procedure. The traditional open approach involves a transverse or right upper quadrant incision to expose and split the hypertrophied muscle, whereas the laparoscopic technique employs small trocars and a camera for minimal access. Both methods aim to relieve the gastric outlet obstruction by longitudinally dividing the muscle fibres without breaching the mucosa. Advances in instrumentation, imaging and perioperative care have refined patient selection, reduced operative times and enhanced recovery protocols. Global experience highlights the importance of early diagnosis, meticulous fluid and electrolyte correction before surgery, and surgeon expertise in minimising peri-operative complications such as mucosal perforation, wound infection or port-site issues.

Research from Nature Portfolio

Recent studies have compared the safety profiles and complication spectra of open versus minimally invasive pyloromyotomy. Analysis of several hundred infants revealed a lower overall complication rate following laparoscopic pyloromyotomy, with open surgery more often associated with serosal tears of the stomach and fascial dehiscence. Conversely, laparoscopy carried a risk of omental herniation through port sites, necessitating re-intervention in a minority of cases. Severity of complications, classified by Clavien–Dindo criteria, was similar between approaches, yet the differing nature of adverse events underscores the need for careful port closure techniques and vigilant postoperative monitoring when employing minimally invasive methods.

Surgical Management of Hypertrophic Pyloric Stenosis publication trend

The graph below shows the total number of articles in surgical management of hypertrophic pyloric stenosis across all publications each year (not limited to Nature Index journals).

Technical terms

Hypertrophic pyloric stenosis: Thickening of the pyloric muscle causing gastric outlet obstruction in infants.

Pyloromyotomy: Surgical splitting of the hypertrophied pyloric muscle to relieve obstruction.

Open pyloromyotomy: Traditional surgical approach via a small abdominal incision.

Laparoscopic pyloromyotomy: Minimally invasive technique using trocars and a camera.

Serosal tear: Accidental laceration of the stomach’s outer lining during surgery.

Omental herniation: Protrusion of omental fat through a port or incision site.

References

1. Open Versus Laparoscopic Pyloromyotomy for Hypertrophic Pyloric Stenosis: A Systematic Review and Meta-Analysis Focusing on Major Complications. Surgical Endoscopy (2012).
2. Infantile hypertrophic pyloric stenosis at a tertiary care hospital in Tanzania: a surgical experience with 102 patients over a 5-year period. BMC Research Notes (2015).
3. Comparison of laparoscopic and open pyloromyotomy: Concerns for omental herniation at port sites after the laparoscopic approach. Scientific Reports (2020).
4. The Safety and Effectiveness of Laparoscopic Pyloromyotomy Using 3-mm Electrocautery Hook versus Open Surgery for Treatment of Hypertrophic Pyloric Stenosis in Infants. Children (2021).