Evidence map›Paper›PMID 31513680›Full record

ArticlePloS one2019

Clavien-Dindo classification for grading complications after total pharyngolaryngectomy and free jejunum transfer.

Shimpei Miyamoto, Junichi Nakao, Takuya Higashino, Seiichi Yoshimoto, Ryuichi Hayashi, Minoru Sakuraba

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 6% 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

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

  1. A systematic review of surgical outcomes and postoperative complications based on free flap selection for reconstructing primary or recurrent locally advanced laryngeal-hypopharyngeal tumours.Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2026
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  6. Etiology and therapy of pharyngeal perforations.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2025
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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 4 institutions in 1 country.

Shimpei MiyamotoDepartment of Plastic and Reconstructive Surgery, National Cancer Center Hospital, Tokyo, Japan.ORCID 0000-0003-4367-6927
Junichi NakaoDepartment of Plastic and Reconstructive Surgery, Nippon Medical School Hospital, Tokyo, Japan.
Takuya HigashinoDepartment of Plastic and Reconstructive Surgery, National Cancer Center Hospital East, Kashiwa, Japan.
Seiichi YoshimotoDepartment of Head and Neck Oncology, National Cancer Center Hospital, Tokyo, Japan.
Ryuichi HayashiDepartment of Head and Neck Surgery, National Cancer Center Hospital East, Kashiwa, Japan.
Minoru SakurabaDepartment of Plastic and Reconstructive Surgery, National Cancer Center Hospital East, Kashiwa, Japan.
National Cancer Center Hospital East · JPIwate Medical University · JPNippon Medical School Hospital · JPTokyo National Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe frequency of postoperative complications is used as an indicator of surgical quality; however, comparison of outcomes is hampered by a lack of agreement on the definition of complications and their severity. A standard grading system for surgical complications is necessary to improve the quality of clinical research and reporting in head and neck reconstruction.

methodsThe aim of this study was to compare postoperative morbidity after microvascular head and neck reconstruction between patients with versus without a history of prior radiation therapy (RT) by using the Clavien-Dindo classification. A group of 274 patients was divided into two cohorts based on the history of prior RT: the RT group included 79 patients and the non-RT group included 195 patients. Postoperative (30-day) complications were compared between the groups with a nonstandardized evaluation system and the Clavien-Dindo classification.

resultsThe grades of complications according to the Clavien-Dindo classification were significantly higher in the RT group than in the non-RT group. The frequency of postoperative complications did not differ significantly between the groups according to the nonstandardized evaluation system.

conclusionsThe Clavien-Dindo classification could serve as a useful, highly objective tool for grading operative morbidity after microvascular head and neck reconstruction when comparing similar defects and methods of reconstruction. Widespread use of the Clavien-Dindo classification system would allow adequate comparisons of surgical outcomes among different surgeons, centers, and therapies.

Indexed as

AgedAged, 80 and overFemaleGeneral SurgeryHumansJejunumLaryngectomyLarynxMaleMiddle AgedPharyngectomyPharynxPostoperative ComplicationsRetrospective Studies

Identifiers

PMID31513680
PMCPMC6742376
OpenAlexW2972409828

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.