Factors Associated with the Risk of Persistent Gastrostomy Site Infection Following Laparoscopic or Open Nissen Fundoplication.

Background: Gastrostomy for feeding disorders or swallowing dysfunctions can be complicated by persistent gastrostomy site infection (PGSI). PGSI causes nutrient leakage, with dilated PGSI requiring gastrostomy reconstruction. The purpose of this study was to evaluate the causes, patient characteristics, and perioperative management of PGSI after Nissen fundoplication and gastrostomy for patients with gastro-oesophageal reflux.

Patients and Methods: The records of all patients who underwent Nissen fundoplication and gastrostomy for gastro-oesophageal reflux over the past 12 years were retrieved. Risk factors were analysed, including age at surgery, gender, operative procedure, use of postoperative ventilator management, gastrostomy tube migration towards the pylorus, bacterial culture results, and length of hospital stay. PGSI as a cause of inflammation was analysed statistically.

Results: Forty patients were identified, ranging in age from 1 to 49 years (median, 11 years) surgically. Twenty each underwent laparoscopic and open surgery, with all undergoing gastrostomy using the Stamm technique. Four patients developed PGSI. Gastrostomy tubes had migrated postoperatively to the pyloric side in three of these four patients (P < 0.005), increasing intragastric pressure. Three of these four patients also required positive pressure ventilation during the perioperative period (P < 0.001).

Conclusion: PGSI correlates with the perioperative management of positive pressure and with increased intragastric pressure resulting from pyloric obstruction, which is caused by aberrant distribution of the gastrostomy tube to the pyloric side.

Statistical Analysis Used: Factors in the two groups were compared statistically by Mann-Whitney U-test to determine whether PGSI caused inflammation. Statistical significance was defined as P < 0.05.