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The prevalence and natural history of patent processus vaginalis (PPV) are unknown. An interim analysis was performed of a multi-institutional, prospective, observational study in neonates undergoing laparoscopic pyloromyotomy during which bilateral inguinal canals were evaluated.Infants under 4 months undergoing laparoscopic pyloromyotomy were enrolled at 8 children's hospitals. The presence of a PPV was evaluated and measurements recorded. Patients with a PPV are undergoing annual phone follow-up to 18 years of age. Interim analysis was performed.In a cohort of 610 patient, 80 did not have a PPV examined, 4 had consent issues and were excluded, leaving 526 patients. Of these, 433 (82%) were male, median age 1.2 months (IQR 0.9, 1.6), median weight 3.89 kg (IQR 3.4, 4.46), and EGA 39 weeks (IQR 37, 40). There were 283 PPVs, 132 bilateral (47%), 116 right (41%), and 35 left (12%). Patients with a PPV were significantly younger (1.1 months (IQR 0.9, 1.5) vs 1.3 months (IQR 0.9, 1.7), p=0.02), weighed less (3.76kg (IQR 3.35, 4.26) vs 3.9kg (IQR 3.4, 4.5) p=0.03) and had a significantly lower EGA at birth (38 weeks (IQR 37, 40) vs 39 weeks (IQR 38, 40) p=0.003). Of 246 eligible infants, 208 (85%) responded to at least one annual follow-up. Two patients had an inguinal hernia repair for a symptomatic hernia, 49- and 51-days post pyloromyotomy. One had an orchiopexy and incidental inguinal hernia repair 120 days post pyloromyotomy; for a total of 3 (1.2%) hernia repairs. No additional hernias were identified in 116 patients with the PPV patients who have been followed for1 year.The presence of a PPV at the time of pyloromyotomy is common but the need for hernia repair is rare within the first year of life. Continued long-term longitudinal follow-up of this cohort is needed.II.

Pain following bar placement for pectus excavatum is the dominant factor post-operatively and determines length of stay (LOS). We recently adopted intercostal cryoablation as our preferred method of pain control following minimally invasive pectus excavatum repair. We compared the outcomes of cryoablation to results of a recently concluded trial of epidural (EPI) and patient-controlled analgesia (PCA) protocols.We conducted a prospective observational study of patients undergoing bar placement for pectus excavatum using intercostal cryoablation. Results are reported and compared with those of a randomized trial comparing EPI with PCA. Comparisons of medians were performed using Kruskal-Wallis H tests with alpha 0.05.Thirty-five patients were treated with cryoablation compared to 32 epidural and 33 PCA patients from the trial. Cryoablation was associated with longer operating time (101 min, versus 58 and 57 min for epidural and PCA groups, p 0.01), resulted in less time to pain control with oral medication (21 h, versus 72 and 67 h, p 0.01), and decreased LOS (1 day, versus 4.3 and 4.2 days, p 0.01).Intercostal cryoablation during minimally invasive pectus excavatum repair reduces LOS and perioperative opioid consumption compared with both EPI and PCA.II.

It is unclear whether simple diverticulectomy, rather than segmental bowel resection (SBR), is adequate treatment for gastrointestinal bleeding (GIB) secondary to Meckel diverticulum (MD). There is concern that ulcers in the adjacent bowel may continue to bleed if only the diverticulum is removed. This study seeks to determine if diverticulectomy is satisfactory treatment for bleeding MD. A multi-institution, retrospective review was performed for patients with a diagnosis of MD and GIB who underwent simple diverticulectomy or small bowel resection. Exclusion criteria were comorbid surgical conditions and other causes of GIB. The primary outcome was post-operative bleeding during the initial hospitalization. Secondary outcomes were bleeding after discharge, transfusion or additional procedure requirement, re-admission, and overall complications. There were 59 patients who met study criteria (42 diverticulectomy, 17 SBR). One patient in the SBR group had early post-operative bleeding (p = 0.288). There was one re-admission (p = 0.288) and three total complications in the SBR group (p = 0.021). There were no cases of bleeding or other complications in the diverticulectomy group. This study suggests that simple diverticulectomy is adequate for treatment of GIB caused by MD. Furthermore, diverticulectomy appears to have a lower overall complication rate.