Evidence map›Paper›PMID 36171452›Full record

ReviewSurgical endoscopy2023

Learning curve for the surgical time of laparoscopic cholecystectomy performed by surgical trainees using the three-port method: how many cases are needed for stabilization?

Masaru Komatsu, Naoyuki Yokoyama, Tomohiro Katada, Daisuke Sato, Tetsuya Otani, Rina Harada, Shiori Utsumi, Motoharu Hirai, Akira Kubota, Hiroaki Uehara

Abstract readReview
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In one paragraph

Review in Surgical endoscopy, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Review
  5. Observational
  6. Automatic surgical phase recognition-based skill assessment in laparoscopic distal gastrectomy using multicenter videos.Gastric cancer : official journal of the International Gastric Cancer Association and the Japanese Gastric Cancer Association · 2024
    Article
  7. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Masaru KomatsuDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan. masakoma@east.ncc.go.jp.ORCID http://orcid.org/0000-0002-5505-0406
Naoyuki YokoyamaDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Tomohiro KatadaDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Daisuke SatoDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Tetsuya OtaniDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Rina HaradaDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Shiori UtsumiDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Motoharu HiraiDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Akira KubotaDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.
Hiroaki UeharaDepartment of Digestive Surgery, Niigata City General Hospital, Niigata, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe assessment of laparoscopic cholecystectomy (LC) skills using operating times has not been well reported. We examined the total and partial operating times for LC procedures performed by surgical trainees to determine the required number of surgeries until the surgical time stabilizes.

methodsWe reviewed the video records of 514 consecutive LCs using the three-port method, performed by 16 surgical trainees. The total and partial surgical times were calculated and correlated to the surgeons' experience.

resultsThe median total surgical time for a trainee's first LC was 112 (range 71-226) minutes. It reduced rapidly after the first 20 LCs and plateaued to its minimum after approximately 60 cases. A statistically significant time decrease was observed between the first 10 (median, range 112, 46-252 min) and the next 50-59 cases (64, 34-198 min), but not between the 50-59 and the subsequent 100-109 cases (71, 33-127 min). The total times taken by trainees who had performed > 50 operations were not significantly different from those taken by instructors during the study period. Surgery for 125 patients with acute cholecystitis took a significantly longer time (median 99 vs. 74 min with non-acute cholecystitis); however, the abovementioned time reduction findings showed similar results regardless of the patient's acute inflammation status. The partial operating times around the cervical/cystic duct and gallbladder bed reduced uniformly between the first 10 and the following 50-59 cases. Although time variations in total and cervical/cystic duct operating times were not correlated to the surgical experience, time fluctuation of gallbladder bed procedures reduced after 60 cases.

conclusionThe time required to perform an LC was inversely correlated with the experience of surgical trainees and halved after the first 60 cases. The surgical experience required for LC time stabilization is approximately 60 cases.

Indexed as

Cholecystectomy, LaparoscopicCholecystitisHumansLearning CurveOperative TimeLaparoscopic cholecystectomyMastery estimationThree-port methodTraining

Identifiers

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.