Evidence map›Paper›PMID 40392455›Full record

ArticleGeneral thoracic and cardiovascular surgery2026

Thoracoscopic ligation by using an extrathoracic looping technique for secondary spontaneous pneumothorax in patients with smoking-induced emphysema.

Yoshifumi Shimada, Takahiro Homma, Yoshinori Doki, Toshihiro Ojima, Naoya Kitamura, Yushi Akemoto, Keitaro Tanabe, Koichiro Shimoyama, Tomoshi Tsuchiya

Abstract readComparative StudyVideo-Audio Media
PubMed Publisher
In one paragraph

Article in General thoracic and cardiovascular surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–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

1 citing paper in PubMed.

  1. 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

9 authors.

Yoshifumi ShimadaDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan. joci.wiw@gmail.com.ORCID http://orcid.org/0009-0002-4508-8010
Takahiro HommaDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Yoshinori DokiDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Toshihiro OjimaDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Naoya KitamuraDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Yushi AkemotoDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Keitaro TanabeDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Koichiro ShimoyamaDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.
Tomoshi TsuchiyaDepartment of Thoracic Surgery, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveThis study aimed to evaluate the efficacy of thoracoscopic ligation for secondary spontaneous pneumothorax performed via an extrathoracic looping technique in patients with smoking-induced emphysema.

methodsWe retrospectively analyzed clinical data of 58 patients with secondary spontaneous pneumothorax who had histories of smoking and emphysematous lung changes on chest computed tomography. These patients underwent thoracoscopic surgery at our institute between April 2016 and March 2023. We then compared clinical outcomes of ligation (n = 26) and conventional bullectomy (n = 29).

resultsWe found no significant differences in preoperative characteristics of the groups. The operation time (ligation vs bullectomy groups, respectively: median 71 min [interquartile range 52-95] vs 94 min [70-124], p = 0.016); amount of postoperative air leakage (0 mL/min [0-0] vs 50 mL/min [0-70], p < 0.001); duration of postoperative drainage (1 day [1-2] vs 4 days [1-5], p < 0.001); and length of postoperative hospital stay (4 days [3-5] vs 6 days [4-11], p = 0.012) were significantly better for ligation. No patients in the ligation group required postoperative treatment of prolonged air leakage; eight patients (27.6%) in the bullectomy group underwent postoperative treatments including pleurodesis (n = 8), bronchial occlusion (n = 2), or reoperation (n = 2) (p = 0.004). The postoperative complications and recurrence rates were not significantly different between groups.

conclusionsBecause the thoracoscopic ligation technique proposed here allows closing a pulmonary fistula without resecting the visceral pleura, it is a reliable surgical treatment of secondary spontaneous pneumothorax in patients with smoking-induced emphysema.

Indexed as

PneumothoraxPulmonary EmphysemaSmokingThoracic Surgery, Video-AssistedThoracoscopyAdultAgedFemaleHumansLength of StayLigationMaleMiddle AgedPostoperative ComplicationsRetrospective StudiesTime FactorsChronic obstructive pulmonary diseaseEmphysemaPneumothoraxThoracoscopic ligationThoracoscopic surgery

Identifiers

What OpenQuestion holds

Textmetadata
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.