, Volume 33, Issue 2, pp 251–257 | Cite as

Effects of Mechanical Complications on Radiation Exposure During Fluoroscopically Guided Gastrojejunostomy Exchange in the Pediatric Population

  • Kevin S. H. Koo
  • Joseph ReisIII
  • Jodi Manchester
  • Gulraiz Chaudry
  • Brian Dillon
Original Article


The purpose of the article is to evaluate the effects of mechanical complications, such as clogging or coiling, of gastrojejunostomy tubes on radiation exposure during exchange in the pediatric population. In this HIPAA-compliant and IRB-approved study, we retrospectively reviewed procedural records for patients undergoing gastrojejunostomy (GJ) tube exchange during a 4-month period in 2014. Success of the procedure, specifications of the tube, age, and sex of the patient as well as radiation exposure during the procedure were included. Radiation exposure was measured in fluoroscopy time and cumulative air kerma. Complications encountered during exchange were also recorded, if available. Patients presenting for gastrostomy to GJ conversions or combined procedures were excluded from the study. Ordinary and mixed effect linear regression models were used to test associations between GJ tube parameters, presence of mechanical complications, and fluoroscopy time and radiation dose. 146 patients undergoing 285 GJ exchanges met inclusion criteria over the 4-month study period (M:F 82:64). All exchanges were successful with 85 demonstrating a form of mechanical complication (44 coiled, 41 clogged). Of the reported GJ tube specifications, only tube length was significantly associated with mechanical complications (p < 0.001). The presence of mechanical complication was significantly associated with increased radiation exposure and fluoroscopy time (p < 0.0001). Mechanical complications of gastrojejunostomy tubes, such as clogging or coiling, are associated with increased radiation exposure during exchange. Strategies to decrease these complications, including re-siting the gastrostomy tract or placement of a surgical jejunostomy in the event of repeated coiling of a tube should be strongly considered.


Deglutition Deglutition disorders Gastrojejunostomy tubes Radiation Pediatrics Complications Clogging Coiling 



This work did not receive any grant funding or other financial support.

Compliance with Ethical Standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.

Ethical Approval

For this retrospective study, formal consent is not required.

Informed Consent

Does not apply.


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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  • Kevin S. H. Koo
    • 1
  • Joseph ReisIII
    • 2
  • Jodi Manchester
    • 3
  • Gulraiz Chaudry
    • 3
  • Brian Dillon
    • 4
  1. 1.Department of RadiologySeattle Children’s HospitalSeattleUSA
  2. 2.Department of Imaging SciencesUniversity of Rochester Medical CenterRochesterUSA
  3. 3.Department of RadiologyBoston Children’s HospitalBostonUSA
  4. 4.Department of Radiology and Biomedical ImagingYale School of MedicineNew HavenUSA

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