What are the risks of vagal nerve (cranial nerve X) injury during pyloric stenosis surgery?

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Last updated: May 27, 2025View editorial policy

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From the Research

Pyloric stenosis surgery, specifically pyloromyotomy, carries a small risk of vagal nerve injury, but this complication is rare with modern surgical techniques, and most patients experience no long-term adverse effects, as shown in a recent study 1. The risk of vagal nerve injury can be minimized by making a precise longitudinal incision through the pyloric muscle while carefully avoiding the underlying mucosa and surrounding structures. The laparoscopic approach, which is now commonly used, may provide better visualization and potentially reduce the risk of nerve injury compared to open surgery, although the evidence is not conclusive 2. Some studies suggest that laparoscopic pyloromyotomy may result in a small increase in mucosal perforation compared with open pyloromyotomy, but the certainty of the evidence is low 2. Key points to consider when evaluating the risk of vagal nerve injury during pyloric stenosis surgery include:

  • The use of modern surgical techniques to minimize the risk of nerve injury
  • The potential benefits of the laparoscopic approach in reducing the risk of nerve injury
  • The importance of careful patient selection and preoperative evaluation to minimize the risk of complications
  • The need for ongoing monitoring and follow-up to detect any potential long-term adverse effects, although a recent study found no significant long-term physiologic impairment from pyloric stenosis after successful surgical intervention 1. Overall, the risk of vagal nerve injury during pyloric stenosis surgery is small, and most patients can expect a good outcome with minimal long-term adverse effects, as supported by recent studies 1, 3.

References

Research

Open versus laparoscopic pyloromyotomy for pyloric stenosis.

The Cochrane database of systematic reviews, 2021

Research

Hypertrophic Pyloric Stenosis.

Pediatrics in review, 2021

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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