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Pediatric Surgery

The main focus is to study somatic and psychosocial long-term outcome in patients operated for congenital gastrointestinal and urogenital conditions and how surgical techniques and follow-up protocols influence these parameters.

About the group

Patient reported outcomes are considered important outcome measures. In all projects there is a strong focus on interdisciplinary collaboration, and the group collaborates both nationally and internationally. Translational research includes epigenetic studies in Hirschpsrung disease and studies on the immune system in bowel specimens from neonates and small children.  

The majority in the group are paediatric surgeons, nurses, research fellows and medical students. The group has extensive collaboration with other surgical specialists, child psychiatrists, radiologists, physiotherapists, paediatricians, and researchers involved in basic science.

It is challenging to study outcome of surgical treatment in children because many effects are not detected until the patients reach adolescence or adult age. Furthermore, many of the diagnoses are rare, and more than one organ-system may be involved.


  • The group strives to continue to be the leading national and an acknowledged research group on long-term outcome of surgical treatment in neonates and children.
  • Continue and expand multidisciplinary collaboration and international participation in multicentre studies



The group collaborates with several other groups at OUS and University of Oslo. Akershus university hospital; Department of colorectal surgery and Pelvic floor center. St Olavs hospital and  NTNU. Tromsø university hospital and University of Tromsø.  


University of Helsinki, Finland. Karolinska university, Sweden. Lund university, Sweden. Erasmus university, The Netherlands

Selected Publications

  • Defining outcomes following congenital diaphragmatic hernia using standardised clinical assessment and management plan (SCAMP) methodology within the CDH EURO consortium. IJsselstijn H, Breatnach C, Hoskote A, Greenough A, Patel N, Capolupo I, Morini F, Scharbatke H, Kipfmueller F, Ertresvag K, Kraemer U, Braguglia A, Wessel L, van Heijst AFJ, Moinichen I, Emblem R, Tibboel D; CDH EURO Consortium Group.Pediatr Res. 2018 May 29. doi: 10.1038/s41390-018-0063-3. [Epub ahead of print]  
  • Outcome for biliary atresia patients treated at a low-volume centre. Bjørnland K, Hinna M, Aksnes G, Stensrud KJ, Ertresvåg K, Bjørnstad-Østensen A, Sanengen T, Line PD, Aagenæs I, Aabakken L, Emblem R, Almaas R. Scand J Gastroenterol. 2018 Apr;53(4):471-474. 
  • Initial experience with percutaneous endoscopic gastrostomy with T-fastener fixation in pediatric patients. Kvello M, Knatten CK, Perminow G, Skari H, Engebretsen A, Schistad O, Emblem R, Bjørnland K. Endosc Int Open. 2018 Feb;6(2):E179-E185.
  • Outcome in biliary atresia in the Nordic countries - a multicenter study of 158 patients during 2005-2016. Pakarinen MP, Johansen LS, Svensson JF, Bjørnland K, Gatzinsky V, Stenström P, Koivusalo A, Kvist N, Almström M, Emblem R, Björnsson S, Backman T, Almaas R, Jalanko H, Fischler B, Thorup J; Nordic Pediatric Surgery Study Consortium. J Pediatr Surg. 2017 Sep 5. S0022-3468
  • Long-term psychosocial consequences of surgical congenital malformations. Diseth TH, Emblem R.
  • Semin Pediatr Surg. 2017 Oct;26(5):286-294. doi: 10.1053/j.sempedsurg.2017.09.009. Epub 2017 Sep 8. Review
  • Preoperative liquid gastric emptying rate does not predict outcome after fundoplication. Knatten CK, Fjeld JG, Medhus AW, Pripp AH, Fyhn TJ, Aabakken L, Kjosbakken H, Edwin B, Emblem R, Bjørnland K. J Ped Surg 2017; 52: 540-3.
  • A Nordic multicentre survey of long-term bowel function after transanal endorectal pull-through in 200 patients with rectosigmoid Hirschsprung disease. Bjørnland K, Pakarinen M, Stenstrøm P, Stensrud KJ, Neuvonen M, Granstrøm AL, Graneli C, Pripp AH, Armbjornsson E, Emblem R, Wester T, Rintala RJ. J Pediatr Surg 2017
  • Preoperative liquid gastric emptying rate dose not predict outcome after fundoplication. Knatten CK, Fjeld JG, Medhus AW, Pripp AH, Fyhn TJ, Aabakken L, Kjosbakken H, Edwin B, Emblem R, Bjørnland K. J Pediatr Surg 2017, in press
  • Lower urinary tract symptoms in children with anorectal malformations with rectoperineal fistulas. Stenström P, Sandelin H, Emblem R, Arnbjörnsson E, Bjørnland K. J Pediatr Surg 2016;51:1234-40  
  • Nissen fundoplication in children with and without neurological impairment: A prospective cohort study. Knatten CK, Kvello M, Fyhn TJ, Edwin B, Schistad O, Aabakken L, Pripp AH, Kjosbakken H, Emblem R, Bjørnland K. J Pediatr Surg. 2015;51:1115-21
  • Trends in the use of gastrostomies at a tertiary paediatric referral centre. Kvello M, Åvitsland TL, Knatten CK, Pripp AH, Aabakken L, Emblem R, Bjørnland K. Scand J Gastroenterol 2016;51:625-32  
  • Randomized controlled trial of laparoscopic and open Nissen fundoplication in children. Fyhn TJ, Knatten CK, Pripp A, Schistad O, Kjosbakken H, Edwin B, Emblem R, Bjørnland K. Ann Surg 2015;26:1061-7
  • Anal endosonography and bowel function in patients undergoing different types of endorectal pull-through procedures for Hirschpsrung’s disease. Stensrud KJ, Emblem R, Bjørnland K. J Pediatr Surg 2015;50:1346-6  
  • Bowel symptoms in children with anorectal malformations - a follow-up with a gender and age perspective. Stenström P, Kockum CC, Emblem R, Arnbjörnsson E, Bjørnland K. J Pediatr Surg 2014;49:1122-30  
  • Inflammatory response after open and laparoscopic Nissen fundoplication in children: a randomized study. Knatten CK, Hviid CH, Pripp AH, Emblem R, Bjørnland K. Pediatr Surg Int 2014;30:11-7
  • Gastric emptying in children with gastroesophageal reflux and in healthy children. Knatten CK, Åvitsland TL, Medhus AW, Fjeld JG, Pripp AH, Emblem R, Bjørnland K. J Pediatr Surg 2013;48:1856-61
  • Parent-reported effects of gastrostomy tube placement. Åvitsland TL, Birketvedt K, Bjørnland K, Emblem R. Nutr Clin Pract 2013;28:493-8  
Published Aug. 10, 2018 10:33 AM - Last modified Apr. 24, 2020 10:08 AM


Group Leader


Detailed list of participants