Ultrasound Assessment of Abdominal Adhesions in Neonates: Data over Dogma for Re-Operative Timing

Introduction: Neonatal abdominal reoperation is difficult and can complicated by abdominal adhesions. Identifying patients who could safely undergo early reoperation would save TPN and central line days, decrease associated infection and liver injury, and NICU and hospital length of stay. We sought to determine if ultrasound (US) could accurately assess the location and severity of adhesions in neonates as an objective dynamic marker capable of informing reoperation timing. Methods: : After IRB approval, we conducted a prospective observational study including neonates undergoing abdominal operations. Patients received surgeon-performed US approximately every two weeks until reoperation or discharge. Adhesions were assessed in 5 zones: right upper quadrant (RUQ), right lower quadrant (RLQ), left upper quadrant (LUQ), left lower quadrant (LLQ) and peri-incision (INC). Results: : Over a 6-month study period, 16 neonates were enrolled. Median gestational age was 34 weeks at birth and median weight 2.2 kilograms. 6 underwent reoperation within initial NICU admission. At time of operation US correctly identified the absence or presence and severity of adhesions in: RUQ (3/3); RLQ (6/6); LUQ (4/5); LLQ (6/6); and INC (5/5). Conclusion: US can identify location and severity of post-operative adhesions in neonates, potentially identifying patients who can safely undergo reoperation earlier than predetermined wait periods.