Abstract
Purpose
Contralateral groin exploration with closure of a patent processus vaginalis (PPV) in children with a unilateral inguinal hernia remains controversial. We aimed to generate precise, age-related probabilities of patency of the contralateral processus vaginalis (PV) in infants with a unilateral inguinal hernia to guide practice.
Methods
Retrospective review of all unilateral laparoscopic inguinal hernia repairs in 5 years to determine patency of contralateral PV. Using logistic binomial regression, age-adjusted odds ratio (OR), probability of contralateral PPV and number needed to explore (NNE) in order to close all PPVs were estimated.
Results
Data from 331 children [262 male, median 3.8 months corrected gestational age (CGA)] were analysed; 160 (48 %) had a contralateral PPV. In the regression model, CGA is linearly related to log[OR] such that for each month increase in CGA, the log[OR] of having a contralateral PPV decreased by 0.017 ± 0.006 (mean ± SEM; p = 0.005). Gender and side of hernia had no significant effect. The probability of contralateral PPV is 50 % (NNE = 2) at 8 m CGA, 33 % (NNE = 3) at 49 m and 25 % (NNE = 4) at 72 m.
Conclusions
These data contribute to our knowledge of the natural history of the PV and may help guide the need for contralateral groin exploration in infants with inguinal hernia.
Similar content being viewed by others
References
Antonoff MB, Kreykes NS, Saltzman DA, Acton RD (2005) American academy of pediatrics section on surgery hernia survey revisited. J Pediatr Surg 40:1009–1014
Martin RS Jr (1961) The case for bilateral exploration of inguinal canals in pediatric patients presenting unilateral inguinal hernias. Am Surg 27:182–185
Ron O, Eaton S, Pierro A (2007) Systematic review of the risk of developing a metachronous contralateral inguinal hernia in children. Br J Surg 94:804–811
Surana R, Puri P (1993) Is contralateral exploration necessary in infants with unilateral inguinal hernia? J Pediatr Surg 28:1026–1027
Wiener ES, Touloukian RJ, Rodgers BM et al (1996) Hernia survey of the section on surgery of the American Academy of Pediatrics. J Pediatr Surg 31:1166–1169
Ein SH, Njere I, Ein A (2006) Six thousand three hundred sixty-one pediatric inguinal hernias: a 35-year review. J Pediatr Surg 41:980–986
Manoharan S, Samarakkody U, Kulkarni M, Blakelock R, Brown S (2005) Evidence-based change of practice in the management of unilateral inguinal hernia. J Pediatr Surg 40:1163–1166
Bhatia AM, Gow KW, Heiss KF, Barr G, Wulkan ML (2004) Is the use of laparoscopy to determine presence of contralateral patent processus vaginalis justified in children greater than 2 years of age? J Pediatr Surg 39:778–781
Saad S, Mansson J, Saad A, Goldfarb MA (2011) Ten-year review of groin laparoscopy in 1001 pediatric patients with clinical unilateral inguinal hernia: an improved technique with transhernia multiple-channel scope. J Pediatr Surg 46:1011–1014
Klin B, Efrati Y, Abu-Kishk I, Stolero S, Lotan G (2010) The contribution of intraoperative transinguinal laparoscopic examination of the contralateral side to the repair of inguinal hernias in children. World J Pediatr 6:119–124
Golka T, Holschneider AM, Fischer R, Blessing MH (1989) Pathogenicity of the open processus vaginalis peritonei. Z Kinderchir 44:88–90
Toufique EM, Ng AT, Chung PH, Chan KL, Wong KK, Tam PK (2009) Laparoscopic hernioplasties in children: the implication on contralateral groin exploration for unilateral inguinal hernias. Pediatr Surg Int 25:759–762
Koivusalo AI, Korpela R, Wirtavuori K, Piiparinen S, Rintala RJ, Pakarinen MP (2009) A single-blinded, randomized comparison of laparoscopic versus open hernia repair in children. Pediatrics 123:332–337
Conflict of interest
None.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Hall, N.J., Choi, W., Pierro, A. et al. Age-related probability of contralateral processus vaginalis patency in children with unilateral inguinal hernia. Pediatr Surg Int 28, 1085–1088 (2012). https://doi.org/10.1007/s00383-012-3174-7
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00383-012-3174-7