Evidence map›Paper›PMID 32548654›Full record

ArticleSurgical endoscopy2021

Evaluation of a single surgeon's learning curve of laparoscopic pancreaticoduodenectomy: risk-adjusted cumulative summation analysis.

Sungho Kim, Yoo-Seok Yoon, Ho-Seong Han, Jai Young Cho, YoungRok Choi, Boram Lee

Abstract read
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In one paragraph

Article in Surgical endoscopy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 1 pooled it
2.7field-weighted citation impact, top 8% of its field
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

22 citing papers in PubMed, 1 synthesis or guideline pooled it, 49 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Sungho KimDepartment of Surgery, Korea University Ansan Hospital, Ansan-si, Korea.
Yoo-Seok YoonDepartment of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 166 Gumi-ro, Bundang-gu, Seongnam-si, 463-707, Korea. yoonys@snubh.org.ORCID http://orcid.org/0000-0001-7621-8557
Ho-Seong HanDepartment of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 166 Gumi-ro, Bundang-gu, Seongnam-si, 463-707, Korea.
Jai Young ChoDepartment of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 166 Gumi-ro, Bundang-gu, Seongnam-si, 463-707, Korea.
YoungRok ChoiDepartment of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 166 Gumi-ro, Bundang-gu, Seongnam-si, 463-707, Korea.
Boram LeeDepartment of Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, 166 Gumi-ro, Bundang-gu, Seongnam-si, 463-707, Korea.
Seoul National University Bundang Hospital · KRKorea University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLaparoscopic pancreaticoduodenectomy (LPD) is technically demanding and there is much controversy about its safety. We evaluated the learning curve for pure LPD based on the clinical outcomes of consecutive patients treated by a single surgeon.

methodsWe reviewed the medical records of 119 consecutive patients who underwent LPD by a single surgeon between June 2013 and August 2018. The learning curve was evaluated using the cumulative summation (CUSUM) and risk-adjusted CUSUM (RA-CUSUM) methods. Perioperative outcomes were compared among the learning curve phases.

resultsCUSUM analysis of the operation time showed that the operation time improved after the 47th case. RA-CUSUM analysis showed the learning curve for surgical failure, defined as severe complications (Clavien-Dindo grade ≥ 3) or open conversion, comprised three phases (phase 1: cases 1-60; phase 2: cases 61-83; phase 3: cases 84-119). There were no significant differences in operation time among the three phases. Intraoperative blood loss decreased significantly over the three phases (P = 0.032). There were no postoperative deaths. The rates of postoperative complications, pancreatic fistula (grade B/C), and post-pancreatic hemorrhage were significantly lower in phase 3 than in phase 2 (2.8% vs. 21.7%, P = 0.019; 2.8% vs. 17.4%, P = 0.049; 0% vs. 13.0%, P = 0.026), but not between phases 1 and 2. Postoperative hospital stay decreased progressively, and was significantly shorter in phase 3 than in phase 1 (9.1 vs. 16.7 days, P = 0.001).

conclusionsThe LPD failure rate decreased after the first 60 cases and stabilized after 84 cases. For safe dissemination of LPD, it is important to shorten the long learning curve and decrease the unfavorable outcomes in the early phase of the learning curve.

Indexed as

Clinical CompetenceLaparoscopyPancreaticoduodenectomySurgeonsHumansLearning CurvePancreatectomyLaparoscopic pancreaticoduodenectomyLearning curveRisk-adjusted CUSUM

Identifiers

PMID32548654
OpenAlexW3035175348

What OpenQuestion holds

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Registered trials

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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.