Evidence map›Paper›PMID 20037680›Full record

ReviewInternational journal of chronic obstructive pulmonary disease2009

The pathophysiology of bronchiectasis.

Paul T King

Registry-linked trialOpen access · goldAbstract readReview
In one paragraph

Review in International journal of chronic obstructive pulmonary disease, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05719597 (Effects of Positive Expiratory Pressure Breathing Versus Incentive Spirometry on Dyspnea and Sputum Profile in Bronchiolectasis Patients), which is not on this map. Cited by 128 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
128citing papers in PubMed, 5 pooled it
4.3field-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.

NCT05719597 nacompletednot on this mapstarted 2022, after this paper: background citation

Effects of Positive Expiratory Pressure Breathing Versus Incentive Spirometry on Dyspnea and Sputum Profile in Bronchiolectasis Patients

TypeinterventionalSponsorRiphah International UniversityRan2022 to 2023Enrolled24ConditionsBronchiolectasisArmsPEP (Positive Expiratory Pressure), IS (Incentive spirometry)
3 · Its place in the literature

Who cites it

128 citing papers in PubMed, 5 syntheses or guidelines pooled it, 243 citations in OpenAlex.

  1. Pooled it
  2. Mucolytics for children with chronic suppurative lung disease.The Cochrane database of systematic reviews · 2025
    Pooled it
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  10. Risk Factors for Secondary Immunodeficiency in the Aged.The journal of allergy and clinical immunology. In practice · 2026
    Review
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68 more citing papers are in PubMed but not listed here.

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

1 author at 1 institution in 1 country.

Paul T KingDepartment of Medicine, Monash University, Monash Medical Centre, Melbourne, Victoria, Australia. paul.king@med.monash.edu.au
Monash Medical Centre · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bronchiectasis is defined by permanent and abnormal widening of the bronchi. This process occurs in the context of chronic airway infection and inflammation. It is usually diagnosed using computed tomography scanning to visualize the larger bronchi. Bronchiectasis is also characterized by mild to moderate airflow obstruction. This review will describe the pathophysiology of noncystic fibrosis bronchiectasis. Studies have demonstrated that the small airways in bronchiectasis are obstructed from an inflammatory infiltrate in the wall. As most of the bronchial tree is composed of small airways, the net effect is obstruction. The bronchial wall is typically thickened by an inflammatory infiltrate of lymphocytes and macrophages which may form lymphoid follicles. It has recently been demonstrated that patients with bronchiectasis have a progressive decline in lung function. There are a large number of etiologic risk factors associated with bronchiectasis. As there is generally a long-term retrospective history, it may be difficult to determine the exact role of such factors in the pathogenesis. Extremes of age and smoking/chronic obstructive pulmonary disease may be important considerations. There are a variety of different pathogens involved in bronchiectasis, but a common finding despite the presence of purulent sputum is failure to identify any pathogenic microorganisms. The bacterial flora appears to change with progression of disease.

Indexed as

BronchiBronchiectasisHumansLung Diseases, Obstructivebronchiectasisinflammationobstructive lung diseasepathologypathophysiology

Identifiers

PMID20037680
PMCPMC2793069
OpenAlexW1999008330

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.