Evidence map›Paper›PMID 34002337›Full record

ArticleGeneral thoracic and cardiovascular surgery2021

Efficacy of pleural coverage with polyglycolic acid sheet after bullectomy for postoperative recurrence of spontaneous pneumothorax in young patients: a multi-institutional cohort study.

Takashi Iwazawa, Yoshihisa Kadota, Yukiyasu Takeuchi, Hideoki Yokouchi, Hiroyuki Shiono, Masanobu Hayakawa, Yasushi Sakamaki, Eiji Kurokawa, Kiyonori Nishioka, Yasushi Shintani

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in General thoracic and cardiovascular surgery, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.0field-weighted citation impact, top 23% 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

9 citing papers in PubMed, 12 citations in OpenAlex.

  1. Article
  2. Article
  3. Postoperative pneumothorax occurrence in patients with Marfan syndrome.General thoracic and cardiovascular surgery · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Prospective Observation Study for Primary Spontaneous Pneumothorax: Incidence of and Risk Factors for Postoperative Neogenesis of Bullae.Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia · 2024
    Observational
  8. Article
  9. 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 at 4 institutions in 1 country.

Takashi IwazawaThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan. iwazawa@chp.toyonaka.osaka.jp.
Yoshihisa KadotaThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Yukiyasu TakeuchiThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Hideoki YokouchiThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Hiroyuki ShionoThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Masanobu HayakawaThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Yasushi SakamakiThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Eiji KurokawaThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Kiyonori NishiokaThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Yasushi ShintaniThoracic Surgery Study Group of Osaka University (TSSGO), Suita, Osaka, Japan.
Osaka University · JPKindai University · JPOsaka Prefectural Medical Center · JPSuita Municipal Hospital · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveVarious surgical procedures have been performed to decrease the recurrence of primary spontaneous pneumothorax after video-assisted thoracic surgery. This study aimed to examine the efficiency of pleural coverage for the prevention of postoperative recurrence in relatively young patients.

methodsBetween January 2008 and December 2012, a total of 357 cases of 345 patients (age 15-29 years) with primary spontaneous pneumothorax who underwent bullectomy at 13 institutions were enrolled in this multi-institutional retrospective cohort study. A concurrent bilateral operation was counted as two cases. Polyglycolic acid sheets were used in 238 cases, and oxidized regenerated cellulose sheets were used in 37 cases to cover the visceral pleura, with no pleural coverage in 82 cases. The average observation period was 4.2 ± 2.0 years.

resultsPostoperative recurrence was observed in 50 cases (14.0%) after video-assisted thoracic surgery. Twenty-six cases (10.9%) in the polyglycolic acid group, eight (21.6%) in the oxidized regenerated cellulose group, and sixteen (19.5%) in the non-coverage group experienced postoperative recurrence. Kaplan-Meier analysis revealed that the rate of freedom from postoperative recurrence in the polyglycolic acid group was significantly higher than that in the non-coverage group. Multivariate analysis showed that age ≥ 20 years and coverage with polyglycolic acid sheets were associated with reduced risk factors for postoperative recurrence.

conclusionPleural coverage with a polyglycolic acid sheet is suggested to be effective in preventing postoperative recurrence of pneumothorax compared with non-coverage in relatively young patients.

Indexed as

PneumothoraxAdolescentAdultCohort StudiesHumansPleuraPolyglycolic AcidRecurrenceRetrospective StudiesThoracic Surgery, Video-AssistedTreatment OutcomeYoung AdultPolyglycolic AcidPleural coveragePneumothoraxRecurrence

Identifiers

PMID34002337
OpenAlexW3162126825

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.