Secondary Logo

Journal Logo

A Procedural and Educational Experience Following Creation of an Advanced Pediatric Endoscopy Service

Mezoff, Ethan A.; Lin, Tom K.; Kaul, Ajay; Kocoshis, Samuel; Putnam, Phil; Pentiuk, Scott

Journal of Pediatric Gastroenterology and Nutrition: April 2017 - Volume 64 - Issue 4 - p e96–e99
doi: 10.1097/MPG.0000000000001290
Original Articles: Gastroenterology

ABSTRACT Advanced endoscopic procedures occur infrequently enough in pediatric patients to preclude effective maintenance of competence among all pediatric gastroenterologists. A recent study suggests that fellows are largely unable to achieve the prescribed case volume recommended to achieve competence. We sought to describe the procedural and educational experience following the creation of an advanced pediatric endoscopy service in response to declining confidence among practice members regarding advanced procedures. We found most advanced endoscopy cases (90%) were accomplished during routine business hours with little seasonal variation. Esophageal dilations occurred far more than all other procedures provided by this service. Control of nonvariceal bleeding, feeding tube placement, enteroscopy, and needle knife therapy, among others, were performed exclusively but relatively infrequently by members of this advanced endoscopy service. Fellows were present for many cases, although they participated in relatively few. We conclude that the creation of an advanced endoscopy service permits distillation of rare but technically demanding cases to few providers, ensuring maintenance of skills, although the role of fellows remains in question.

Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, OH.

Address correspondence and reprint requests to Scott Pentiuk, MD, Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave, MLC 2010, Cincinnati, OH 45209 (e-mail:

Received 3 February, 2016

Accepted 2 June, 2016

Supplemental digital content is available for this article. Direct URL citations appear in the printed text, and links to the digital files are provided in the HTML text of this article on the journal's Web site (

This work was supported in part by National Institutes of Health grant T32 DK007727 (EAM).

The authors report no conflicts of interest.

What Is Known

  • Most pediatric gastroenterologists do not routinely perform advanced endoscopic procedures.
  • Nationwide, many fellows do not meet prescribed case volumes in advanced endoscopic procedures.

What Is New

  • The creation of an advanced endoscopy service distills rare cases among few, competent providers.
  • Fellow participation in advanced procedures is low, yet high participation may not guarantee satisfaction of all prescribed case volumes.

A relation between experience and competency in diagnostic and advanced endoscopy has been reported in both pediatric and adult literature (1–5). Unlike diagnostic endoscopic procedures, cases requiring advanced endoscopic experience and skill may be uncommon in clinical practice such that the achievement of competence at one stage may be gradually lost over time if the number of cases is low. Group practices in pediatric gastroenterology vary in size and more advanced therapeutic endoscopic cases may be deferred to performance by a few group members with the necessary skills to safely and effectively care for the patient. Although varying degrees of organization are found among adult advanced endoscopists by institution, there is a paucity of such organization among pediatric institutions, owing to the relatively smaller case volumes. Sporadic, many general providers still, however, encounter situations in which a structured advanced endoscopy service may be necessary or, at minimum, beneficial. This service may also result in fewer complications from advanced therapeutic maneuvers.

In addition to the above restrictions, those entering the field may not have gained sufficient exposure to advanced endoscopic techniques during fellowship training, discouraging them from attempting such procedures as independent providers. Challenges in meeting suggested procedure volumes during fellowship have recently been discussed in the literature (6). Although relatively new, advanced techniques such as endoscopic retrograde cholangiopancreatography (ERCP) and endoscopic ultrasound require supplemental training, other advanced procedures are not formally learned after primary training (7). To investigate the state of advanced endoscopic procedural education, Lerner et al (8) recently surveyed 12 pediatric gastroenterology fellowship programs in the United States comprising 27% of trainees nationwide. They concluded that most training programs do not have an adequate volume of therapeutic endoscopy procedures for all fellows to meet the established training guidelines as put forth by the North American Society for Pediatric Gastroenterology, Hepatology and Nutrition (NASPGHAN) (8). Furthermore, there was great variation in the numbers of advanced cases performed in total at institutions across the United States with few offering sufficient numbers to maintain competency among all providers.

We report our experience 1 year after creating an advanced endoscopy service at a pediatric referral hospital in response to an ever-increasing volume of specific and advanced endoscopic procedures. Specifically, we describe those procedures performed during the first year of service and the impact on fellow training. We conclude that the identification of a core group of skilled endoscopists permits the experience gained from relatively rare procedures to remain concentrated and thus beneficial. Furthermore, we add that even in a situation in which procedure number may approach that recommended to adequately train fellows at a large institution, their participation is often not ensured.

Back to Top | Article Outline


During the spring of 2013, the need for a core group of pediatric gastroenterologists with interest and expertise in advanced endoscopic procedures reached a critical mass at our institution. The Cincinnati Children's Hospital Medical Center Advanced Endoscopy Service (AES) within the division of pediatric gastroenterology, hepatology, and nutrition was organized to meet this need, providing continuous coverage for difficult, complex, or highly specialized endoscopic procedures. Five attending pediatric gastroenterologists among a division of more than 30 faculty members were self-identified as having achieved the necessary competence and skill in advanced endoscopic procedures based on their individual level of achieved experience and expertise. More specifically, each AES faculty member has participated in the described procedures for more than 8 years at our center. All of the AES attendings were formally approved to perform the therapeutic/advanced endoscopic procedures by the hospital's credentialing body. A separate therapeutic endoscopy call schedule was established whereby the 5 members would share full-time day and night coverage throughout the year including weekends and holidays. The AES performed outpatient or inpatient procedures upon request of the referring gastroenterologist or were ready to assist for potentially complicated procedures or advanced therapeutic interventions. Trainee involvement was decided on a case-by-case basis.

Back to Top | Article Outline

Service Experience

Following institutional review board approval, the details of advanced procedures performed by a member of the AES from July 1, 2013, and extending through June 30, 2014, were retrospectively collected. Advanced procedures were defined as endoscopic procedures not including routine diagnostic procedures such as esophagogastroduodenoscopy or colonoscopy. Advanced procedures included, but were not limited to, small bowel dilation, enteroenteric anastomosis dilation, needle knife utilization, esophageal dilation, steroid injection, fluoroscopically assisted enteric tube placement or replacement, complex foreign body removal, pyloric dilation with botulinum toxin injection, evaluation for and control of gastrointestinal hemorrhage, and ERCP. The date of each encounter was recorded, along with patient age, AES physician, procedure performed, and procedure start time.

Back to Top | Article Outline

Fellow Experience

A pediatric gastroenterology fellowship in the United States is universally a 3-year training program. During the 12-month evaluation period, the details of fellow involvement in each case were prospectively recorded by AES faculty. These details included the presence or absence of a fellow and the degree of involvement. Finally, as each fellow of the program's 12 fellows receives training for more than 3 years, yet the study occurred for more than 1; total procedures were divided into 4 to determine the potential for each fellow to receive adequate training to achieve competency in each of the advanced endoscopy categories recognized in the 2013 NASPGHAN training guidelines.

Back to Top | Article Outline


During the 12-month study period, AES physicians completed a total of 499 advanced endoscopic procedures. Three hundred patients were subjected to these procedures, 82 of whom required more than 1 procedure (27%). Thirteen patients required 5 or more procedures and 4 required more than 10. Two patients required 15 procedures through the study period, both for serial esophageal dilations for difficult strictures.

Of the 365 study days, 232 (64%) involved at least 1 therapeutic procedure performed by an AES physician. Procedures per month varied between 30 and 53, with the median monthly occurrence of 40 (Supplemental Digital Content 1, Fig. 1, Twenty-three procedures began on weekdays after 5:00 PM but before 7:30 AM (5%) and 24 procedures were performed on weekends (5%). There was no holiday coverage need. All providers were called on for both night and weekend coverage. The most common after-hours procedure was complicated foreign body removal, followed by ERCP (Fig. 1). Evaluation or therapy for gastrointestinal bleeding and enteric tube placement were occasionally needed overnight or on weekends.



Provider A performed 205 procedures (41%), the most of the 5 providers. Provider B performed 109 (22%), provider C performed 100 (20%), provider D performed 62 (12%), and provider E performed 23 (5%). Esophageal dilation was the most frequently performed AES procedure, 192 times during the 12-month study period (38%) (Supplemental Digital Content 2, Fig. 2, Pyloric dilation and botox injection was the second most common procedure (72, 14%) followed by ERCP (54, 11%), gastrojejunostomy tube replacement (38, 8%), complex percutaneous endoscopic gastrostomy (PEG) tube placement (32, 6%), and complex foreign body removal (31, 6%). Of those procedures done more than 5 times through the study period, only ERCP and Savary esophageal dilatation were performed exclusively by a single provider.

The median age at the time of endoscopy was 7.75 years (range 25 days to 38.5 years; Supplemental Digital Content 3, Fig. 3, Most providers were involved in cases with patients ranging from 1 to 19 years of age. Endoscopy with older patients was primarily performed by Provider A. There were no significant complications resulting from any AES procedures during the time course of the study.

The subset of advanced procedures in which details regarding fellow participation were prospectively collected numbered 228 (46%). A fellow was present for 162 (74%) of these procedures. Among the 130 procedures in which a fellow was present and the endoscopist was recorded, the fellow performed all or part of 33 procedures (25%). Fellows performing procedures varied by year of training. Fourteen of these 33 procedures (42%) were attempted or completed by a first year fellow, including multiple episodes of treatment for bleeding duodenal or gastric ulcers, dilation of an esophageal stricture, or complicated foreign body removal.

Analysis of all procedures performed exclusively by AES providers reveals that fellows would be expected to achieve competency by 2013 NASPGHAN guidelines, if fully participating, in esophageal dilation (48 cases/fellow) and enteric tube placement (5.25 cases/fellow). Complicated foreign body removal (7.75 cases/fellow), PEG placement (8 cases/fellow) approached adequate training volumes and are also offered by non-AES providers. Control of nonvariceal bleeding (2 cases/fellow), polypectomy (2.25 cases/fellow), and enteroscopy using a colonoscope (1.75 cases/fellow) are generally not attempted in the absence of non-AES providers and thus would not be expected to generate sufficient training opportunity at our institution.

Back to Top | Article Outline


We report our educational and procedural experience during a full 12-month academic year following the creation of an advanced endoscopy service tasked with performing or providing support for endoscopic procedures requiring unique experience or skill. The wide distribution of patient age among patients subjected to endoscopic intervention occurred as expected. We found little seasonal variability in the need for advanced endoscopic procedures. AES procedures occurred on only about 2 of every 3 days in the year. On nights and weekends, fewer but a greater diversity of procedures occurred than expected. Overall, procedure volume occurred as expected with esophageal dilation occurring far more frequently than other procedures.

Our center performs many advanced esophageal surgical operations resulting in the need for frequent, serial esophageal dilations as part of the comprehensive care provided to these patients. The decision to include ERCP as part of our data assessment is based on the fact that within our institution, ERCPs are independently performed by one of our pediatric gastroenterologists who completed a formal adult ERCP fellowship. We believed inclusion highlighted our aim of describing procedures requiring advanced endoscopic skill which, by virtue of their infrequency, are competently performed by a small proportion of all pediatric gastroenterologists.

Our experience is in agreement with a previous observation of an insufficient number of advanced cases to satisfy NASPGHAN training recommendations (8). Based on our 1 year review, our center encountered only a sufficient case load to achieve recommended training volumes for each fellow in esophageal dilation and enteric tube placement. As noted in the NASPGHAN guideline report, achievement of the stipulated minimum procedure volume, however, may not equate to procedural competence, and thus there is a need for additional benchmarks to reliably measure trainee competence. We were unable to provide the recommended number of enteroscopy and control of nonvariceal bleeding cases. These insufficiencies are compounded by a low fellow participation rate.

Limitations to our description largely occurred as the result of our methods and the nature of the AES. Our division is segregated to encourage independent hepatology practice. Thus, variceal bleeding cases are not managed by the AES. Furthermore, most gastroenterologists in our division are comfortable treating routine foreign body ingestions and placing PEG tubes and these cases are thus not included. PEG tube placements performed by the AES included those performed at the request of a relatively few number of physicians who do not perform this procedure; the procedures were included as they represent consultation of the AES though their inclusion may be controversial. The policies and procedures of an institution's perioperative services may influence the timing of emergent, therapeutic, and add-on procedures; thus, rates of after-hours procedures may vary widely by institution. Finally, incomplete prospective reporting of fellow involvement is a limitation, although approximately half of cases were included.

In conclusion, our newly developed Advanced Endoscopy Service focuses advanced procedural experience among a restricted number of competent providers who, in turn, offer endoscopic support in a scheduled fashion. Although the creation of this service did not preclude fellows from participating in advanced cases, improved involvement may lead to satisfaction of some (but not all) of the training recommendations for therapeutic procedures. Another proposed method for promoting competency is the incorporation of endoscopic simulators (9). Overall, our procedural experience and education description are in line with previous reports documenting inadequate volumes for training all fellows (8). After assessing the lack of fellow involvement in these procedures it was determined that senior fellows can “sign up” for AES blocks where they will also be on-call for these procedures and allowed to have a larger role in the procedure. Future studies targeting outcomes from advanced procedures will strengthen the foundation of training guidelines and add support to the value of similarly structured advanced endoscopy services.

Back to Top | Article Outline


1. Ekkelenkamp VE, Koch AD, Rauws EA, et al. Competence development in ERCP: the learning curve of novice trainees. Endoscopy 2014; 46:949–955.
2. Hong KH, Shin SJ, Kim JH. Learning curve for endoscopic submucosal dissection of gastric neoplasms. Eur J Gastroenterol Hepatol 2014; 26:949–954.
3. Shahidi N, Ou G, Telford J, et al. Establishing the learning curve for achieving competency in performing colonoscopy: a systematic review. Gastrointest Endosc 2014; 80:410–416.
4. Walsh CM, Ling SC, Mamula P, et al. The gastrointestinal endoscopy competency assessment tool for pediatric colonoscopy. J Pediatr Gastroenterol Nutr 2015; 60:474–480.
5. Ward ST, Mohammed MA, Walt R, et al. An analysis of the learning curve to achieve competency at colonoscopy using the JETS database. Gut 2014; 63:1746–1754.
6. Qualia CM, Baldwin CD, Rossi TM, et al. Pediatric gastroenterology fellows, class of 2007: how well are they prepared for the future? J Pediatr Gastroenterol Nutr 2008; 47:327–333.
7. Leichtner AM, Gillis LA, Gupta S, et al. NASPGHAN guidelines for training in pediatric gastroenterology. J Pediatr Gastroenterol Nutr 2013; 56 (suppl 1):S1–S8.
8. Lerner DG, Li BU, Mamula P, et al. Challenges in meeting fellowship procedural guidelines in pediatric therapeutic endoscopy and liver biopsy. J Pediatr Gastroenterol Nutr 2014; 58:27–33.
9. Lightdale JR, Newburg AR, Mahoney LB, et al. Fellow perceptions of training using computer-based endoscopy simulators. Gastrointest Endosc 2010; 72:13–18.

advanced endoscopy service; pediatric endoscopy; pediatric gastroenterology

Supplemental Digital Content

Back to Top | Article Outline
© 2017 by European Society for Pediatric Gastroenterology, Hepatology, and Nutrition and North American Society for Pediatric Gastroenterology,