Evidence map›Paper›PMID 32226050›Full record

ArticlePloS one2020

Secondary spontaneous pneumothorax and bullous lung disease in cannabis and tobacco smokers: A case-control study.

Alessandro Stefani, Beatrice Aramini, Carlo Baraldi, Lanfranco Pellesi, Giovanni Della Casa, Uliano Morandi, Simona Guerzoni

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 13% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
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  5. CT features associated with contralateral recurrence of spontaneous pneumothorax.QJM : monthly journal of the Association of Physicians · 2024
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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

7 authors at 1 institution in 1 country.

Alessandro StefaniThoracic Surgery Unit, University of Modena and Reggio Emilia, Reggio Emilia, Italy.ORCID 0000-0003-4547-6232
Beatrice AraminiThoracic Surgery Unit, University of Modena and Reggio Emilia, Reggio Emilia, Italy.
Carlo BaraldiToxicology Unit and Drug Abuse Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy.ORCID 0000-0001-8432-1888
Lanfranco PellesiToxicology Unit and Drug Abuse Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy.
Giovanni Della CasaDepartment of Radiology, University of Modena and Reggio Emilia, Reggio Emilia, Italy.
Uliano MorandiThoracic Surgery Unit, University of Modena and Reggio Emilia, Reggio Emilia, Italy.
Simona GuerzoniToxicology Unit and Drug Abuse Center, University of Modena and Reggio Emilia, Reggio Emilia, Italy.
University of Modena and Reggio Emilia · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe notion that smoking cannabis may damage the respiratory tract has been introduced in recent years but there is still a paucity of studies on this subject. The aim of this study was to investigate the relationship between cannabis smoking, pneumothorax and bullous lung disease in a population of operated patients. METHODS AND

findingsWe performed a retrospective study on patients operated on for spontaneous pneumothorax. Patients were divided into three groups according to their smoking habit: cannabis smokers, only-tobacco smokers and nonsmokers. Cannabis lifetime exposure was expressed in dose-years (1d/y = 1 gram of cannabis/week for one year). Clinical, radiological and perioperative variables were collected. The variables were analyzed to find associations with smoking habit. The impact of the amount of cannabis consumption was also investigated by ROC curves analysis. Of 112 patients, 39 smoked cannabis, 23 smoked only tobacco and 50 were nonsmokers. Median cannabis consumption was 28 dose/years, median tobacco consumption was 6 pack/years. Cannabis smokers presented with more severe chronic respiratory symptoms and bullous lung disease and with a higher incidence of tension pneumothorax than both tobacco smokers and nonsmokers. Cannabis smokers also developed a larger pneumothorax, experienced prolonged postoperative stay and demonstrated a higher incidence of pneumothorax recurrence after the operation than nonsmokers did. The risk of occurrence of chronic respiratory symptoms and bullous lung disease in cannabis smokers was dose-related.

conclusionsCannabis smoking seems to increase the risk of suffering from respiratory complaints and can have detrimental effects on lung parenchyma, in a dose-dependent manner. Cannabis smoking also negatively affected the outcome of patients operated for spontaneous pneumothorax. A history of cannabis abuse should always be taken in patients with pneumothorax. There may be need for a specific treatment for pneumothorax in cannabis smokers.

Indexed as

AdultBlisterCannabisFemaleHallucinogensHumansLungMaleMarijuana AbuseMarijuana SmokingMiddle AgedPneumothoraxPulmonary EmphysemaRespiratory SystemSeverity of Illness IndexSmokersHallucinogens

Identifiers

PMID32226050
PMCPMC7105102
OpenAlexW3013770956

What OpenQuestion holds

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LicenceCC BY
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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.