Outcomes of Laparoscopic Pyloromyotomy with Microscope and Stab Incision vs. Open Pyloromyotomy in Infantile Hypertrophic Pyloric Stenosis; Single Institution Experience

Purpose:We attempted to evaluate the outcomes of a newly inaugurated surgical technique of laparoscopic pyloromyotomy with microscope and stab incision (MS-LP) with right upper quadrant transverse open pyloromyotomy (RT-OP), which were performed in a single institution.Methods: The outcome variables in terms of total anesthesia time, operative time, postoperative emesis, time to full-enteral feeding, postoperative hospital stay, cosmetic result score, medical cost, and postoperative wound complications were compared between the MS-LP and RT-OP groups.Results: Fifty-one consecutive pyloromyotomy cases were enrolled; MS-LP (n=33) and RT-OP (n=18).There was no difference in age, pyloric thickness, and preoperative electrolyte levels between the two groups.The total anesthesia time and operative time of MS-LP were not significantly longer than that of RT-OP.Time to full-enteral feeding and postoperative hospital stay were shorter in MS-LP (20.0±18.3 vs. 35.3±14.8hrs.and 2.4±1.3 vs. 3.4±1.2days; p=0.047 and 0.050, respectively).The cosmetic result score and medical cost were significantly higher in MS-LP (9.1±1.0 vs. 7.3±1.2 in terms of scores and 3,501,950±1,093,147 vs. 2,522,474±68,605 in terms of KRW; p=0.001 and 0.021, respectively).No difference in postoperative wound complications was observed between the two groups.Conclusion: Laparoscopic pyloromyotomy with microscope and stab incision may suggest recovery benefits with a shorter time to full-enteral feeding and postoperative hospital stay, as well as better cosmetic results than RT-OP.However, MS-LP may induce higher costs.