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Everard ML, Priftis K, Koumbourlis AC, Shields MD. Time to re-set our thinking about airways disease: lessons from history, the resurgence of chronic bronchitis / PBB and modern concepts in microbiology. Front Pediatr 2024; 12:1391290. [PMID: 38910961 PMCID: PMC11190372 DOI: 10.3389/fped.2024.1391290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Accepted: 05/06/2024] [Indexed: 06/25/2024] Open
Abstract
In contrast to significant declines in deaths due to lung cancer and cardiac disease in Westernised countries, the mortality due to 'chronic obstructive pulmonary disease' (COPD) has minimally changed in recent decades while 'the incidence of bronchiectasis' is on the rise. The current focus on producing guidelines for these two airway 'diseases' has hindered progress in both treatment and prevention. The elephant in the room is that neither COPD nor bronchiectasis is a disease but rather a consequence of progressive untreated airway inflammation. To make this case, it is important to review the evolution of our understanding of airway disease and how a pathological appearance (bronchiectasis) and an arbitrary physiological marker of impaired airways (COPD) came to be labelled as 'diseases'. Valuable insights into the natural history of airway disease can be obtained from the pre-antibiotic era. The dramatic impacts of antibiotics on the prevalence of significant airway disease, especially in childhood and early adult life, have largely been forgotten and will be revisited as will the misinterpretation of trials undertaken in those with chronic (bacterial) bronchitis. In the past decades, paediatricians have observed a progressive increase in what is termed 'persistent bacterial bronchitis' (PBB). This condition shares all the same characteristics as 'chronic bronchitis', which is prevalent in young children during the pre-antibiotic era. Additionally, the radiological appearance of bronchiectasis is once again becoming more common in children and, more recently, in adults. Adult physicians remain sceptical about the existence of PBB; however, in one study aimed at assessing the efficacy of antibiotics in adults with persistent symptoms, researchers discovered that the majority of patients exhibiting symptoms of PBB were already on long-term macrolides. In recent decades, there has been a growing recognition of the importance of the respiratory microbiome and an understanding of the ability of bacteria to persist in potentially hostile environments through strategies such as biofilms, intracellular communities, and persister bacteria. This is a challenging field that will likely require new approaches to diagnosis and treatment; however, it needs to be embraced if real progress is to be made.
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Affiliation(s)
- Mark L Everard
- Division of Paediatrics & Child Health, University of Western Australia, Perth, WA, Australia
| | - Kostas Priftis
- Allergology and Pulmonology Unit, 3rd Paediatric Department, National and Kapodistrian University of Athens, Athens, Greece
| | - Anastassios C Koumbourlis
- Division of Pulmonary & Sleep Medicine, George Washington University School of Medicine & Health Sciences, Washington, DC, United States
| | - Michael D Shields
- Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
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Wiltingh H, Marchant JM, Goyal V. Cough in Protracted Bacterial Bronchitis and Bronchiectasis. J Clin Med 2024; 13:3305. [PMID: 38893016 PMCID: PMC11172502 DOI: 10.3390/jcm13113305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 05/20/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024] Open
Abstract
Chronic cough in children is a common condition for which patients seek medical attention, and there are many etiologies. Of the various causes of chronic cough in children, protracted bacterial bronchitis (PBB) is one of the commonest causes, and bronchiectasis is one of the most serious. Together, they lie on different ends of the spectrum of chronic wet cough in children. Cough is often the only symptom present in children with PBB and bronchiectasis. This review highlights the role of cough as a marker for the presence of these conditions, as well as an outcome endpoint for treatment and research.
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Affiliation(s)
- Hinse Wiltingh
- Department of Respiratory and Sleep Medicine, Queensland Children’s Hospital, Brisbane, QLD 4101, Australia; (H.W.); (J.M.M.)
| | - Julie Maree Marchant
- Department of Respiratory and Sleep Medicine, Queensland Children’s Hospital, Brisbane, QLD 4101, Australia; (H.W.); (J.M.M.)
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Vikas Goyal
- Department of Respiratory and Sleep Medicine, Queensland Children’s Hospital, Brisbane, QLD 4101, Australia; (H.W.); (J.M.M.)
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, QLD 4000, Australia
- Department of Pediatrics, Gold Coast Health, Gold Coast, QLD 4215, Australia
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Kok HC, McCallum GB, Yerkovich ST, Grimwood K, Fong SM, Nathan AM, Byrnes CA, Ware RS, Nachiappan N, Saari N, Morris PS, Yeo TW, Oguoma VM, Masters IB, de Bruyne JA, Eg KP, Lee B, Ooi MH, Upham JW, Torzillo PJ, Chang AB. Twenty-four Month Outcomes of Extended- Versus Standard-course Antibiotic Therapy in Children Hospitalized With Pneumonia in High-Risk Settings: A Randomized Controlled Trial. Pediatr Infect Dis J 2024:00006454-990000000-00884. [PMID: 38830139 DOI: 10.1097/inf.0000000000004407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
BACKGROUND Pediatric community-acquired pneumonia (CAP) can lead to long-term respiratory sequelae, including bronchiectasis. We determined if an extended (13-14 days) versus standard (5-6 days) antibiotic course improves long-term outcomes in children hospitalized with CAP from populations at high risk of chronic respiratory disease. METHODS We undertook a multicenter, double-blind, superiority, randomized controlled trial involving 7 Australian, New Zealand, and Malaysian hospitals. Children aged 3 months to ≤5 years hospitalized with radiographic-confirmed CAP who received 1-3 days of intravenous antibiotics, then 3 days of oral amoxicillin-clavulanate, were randomized to either extended-course (8-day oral amoxicillin-clavulanate) or standard-course (8-day oral placebo) arms. Children were reviewed at 12 and 24 months. The primary outcome was children with the composite endpoint of chronic respiratory symptoms/signs (chronic cough at 12 and 24 months; ≥1 subsequent hospitalized acute lower respiratory infection by 24 months; or persistent and/or new chest radiographic signs at 12-months) at 24-months postdischarge, analyzed by intention-to-treat, where children with incomplete follow-up were assumed to have chronic respiratory symptoms/signs ("worst-case" scenario). RESULTS A total of 324 children were randomized [extended-course (n = 163), standard-course (n = 161)]. For our primary outcome, chronic respiratory symptoms/signs occurred in 97/163 (60%) and 94/161 (58%) children in the extended-courses and standard-courses, respectively [relative risk (RR) = 1.02, 95% confidence interval (CI): 0.85-1.22]. Among children where all sub-composite outcomes were known, chronic respiratory symptoms/signs between groups, RR = 1.10, 95% CI: 0.69-1.76 [extended-course = 27/93 (29%) and standard-course = 24/91 (26%)]. Additional sensitivity analyses also revealed no between-group differences. CONCLUSION Among children from high-risk populations hospitalized with CAP, 13-14 days of antibiotics (versus 5-6 days), did not improve long-term respiratory outcomes.
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Affiliation(s)
- Hing C Kok
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- Department of Pediatrics, Sabah Women and Children's Hospital, Kota Kinabalu, Sabah, Malaysia
| | - Gabrielle B McCallum
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Stephanie T Yerkovich
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Keith Grimwood
- School of Medicine and Dentistry, Griffith University, Gold Coast, Queensland, Australia
- Departments of Infectious Diseases and Pediatrics, Gold Coast Health, Gold Coast, Queensland,, Australia
| | - Siew M Fong
- Department of Pediatrics, Sabah Women and Children's Hospital, Kota Kinabalu, Sabah, Malaysia
| | - Anna M Nathan
- Department of Pediatrics, University of Malaya, Kuala Lumpur, Malaysia
| | - Catherine A Byrnes
- Department of Pediatrics, University of Auckland, Auckland, New Zealand
- Respiratory Department, Starship Children's Hospital, Auckland, New Zealand
| | - Robert S Ware
- School of Medicine and Dentistry, Griffith University, Gold Coast, Queensland, Australia
| | - Nachal Nachiappan
- Department of Pediatrics, Tengku Ampuan Rahimah Hospital, Klang, Selangor, Malaysia
| | - Noorazlina Saari
- Department of Pediatrics, Tengku Ampuan Rahimah Hospital, Klang, Selangor, Malaysia
| | - Peter S Morris
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- Department of Pediatrics, Royal Darwin Hospital, Darwin, Northern Territory, Australia
| | - Tsin W Yeo
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Victor M Oguoma
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- Poche Centre for Indigenous Health, The University of Queensland, Brisbane, Queensland, Australia
| | - I Brent Masters
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia
| | | | - Kah P Eg
- Department of Pediatrics, University of Malaya, Kuala Lumpur, Malaysia
| | - Bilawara Lee
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- First Nations Leadership & Engagement, Charles Darwin University, Darwin, Northern Territory, Australia
| | - Mong H Ooi
- Department of Pediatrics, Sarawak General Hospital, Sarawak, Malaysia
- Institute of Health and Community Medicine, Universiti Malaysia Sarawak, Sarawak, Malaysia
| | - John W Upham
- Diamantina Institute, The University of Queensland, and Translational Research Institute, Brisbane, Queensland, Australia
| | - Paul J Torzillo
- Central Clinical School, University of Sydney, Sydney, New South Wales, Australia
- Department of Respiratory Medicine, Royal Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Anne B Chang
- From the Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia
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Chang AB, Dharmage SC, Marchant JM, McCallum GB, Morris PS, Schultz A, Toombs M, Wurzel DF, Yerkovich ST, Grimwood K. Improving the Diagnosis and Treatment of Paediatric Bronchiectasis Through Research and Translation. Arch Bronconeumol 2024; 60:364-373. [PMID: 38548577 DOI: 10.1016/j.arbres.2024.03.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/02/2024] [Accepted: 03/04/2024] [Indexed: 06/05/2024]
Abstract
Bronchiectasis, particularly in children, is an increasingly recognised yet neglected chronic lung disorder affecting individuals in both low-to-middle and high-income countries. It has a high disease burden and there is substantial inequity within and between settings. Furthermore, compared with other chronic lung diseases, considerably fewer resources are available for children with bronchiectasis. The need to prevent bronchiectasis and to reduce its burden also synchronously aligns with its high prevalence and economic costs to health services and society. Like many chronic lung diseases, bronchiectasis often originates early in childhood, highlighting the importance of reducing the disease burden in children. Concerted efforts are therefore needed to improve disease detection, clinical management and equity of care. Modifiable factors in the causal pathways of bronchiectasis, such as preventing severe and recurrent lower respiratory infections should be addressed, whilst also acknowledging the role played by social determinants of health. Here, we highlight the importance of early recognition/detection and optimal management of bronchiectasis in children, and outline our research, which is attempting to address important clinical knowledge gaps discussed in a recent workshop. The research is grouped under three themes focussing upon primary prevention, improving diagnosis and disease characterisation, and providing better management. Our hope is that others in multiple settings will undertake additional studies in this neglected field to further improve the lives of people with bronchiectasis. We also provide a resource list with links to help inform consumers and healthcare professionals about bronchiectasis and its recognition and management.
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Affiliation(s)
- Anne B Chang
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, QLD, Australia; NHMRC Centre for Research Excellence in Paediatric Bronchiectasis (AusBREATHE), Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia.
| | - Shyamali C Dharmage
- Allergy and Lung Health Unit, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Julie M Marchant
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, QLD, Australia
| | - Gabrielle B McCallum
- NHMRC Centre for Research Excellence in Paediatric Bronchiectasis (AusBREATHE), Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
| | - Peter S Morris
- NHMRC Centre for Research Excellence in Paediatric Bronchiectasis (AusBREATHE), Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia; Department of Paediatrics, Royal Darwin Hospital, Darwin, NT, Australia
| | - Andre Schultz
- Wal-yan Respiratory Research Centre, Telethon Kids Institute and Division of Paediatrics, Faculty of Medicine, University of Western Australia, Perth, WA, Australia; Department of Respiratory Medicine, Perth Children's Hospital, Perth, WA, Australia
| | - Maree Toombs
- NHMRC Centre for Research Excellence in Paediatric Bronchiectasis (AusBREATHE), Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia; School of Public Health, University of Sydney, Sydney, NSW, Australia
| | - Danielle F Wurzel
- Allergy and Lung Health Unit, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Stephanie T Yerkovich
- Australian Centre for Health Services Innovation, Queensland University of Technology, Brisbane, QLD, Australia; NHMRC Centre for Research Excellence in Paediatric Bronchiectasis (AusBREATHE), Child and Maternal Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
| | - Keith Grimwood
- Departments of Infectious Disease and Paediatrics, Gold Coast Health, Gold Coast, QLD, Australia; School of Medicine and Dentistry, Griffith University, Gold Coast, QLD, Australia
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Hull NC, Thacker PG, Boesch RP. Predictive power of chest radiography for infectious or inflammatory lung disease. Pediatr Pulmonol 2023; 58:2804-2808. [PMID: 37431956 DOI: 10.1002/ppul.26591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 05/18/2023] [Accepted: 07/03/2023] [Indexed: 07/12/2023]
Abstract
OBJECTIVE Children frequently present with chronic cough, recurrent respiratory infections, and dysphagia. These symptoms are poor predictors of significant inflammatory lung disease, such as from chronic aspiration. Bronchoalveolar lavage (BAL) is the gold standard for identification of lung infection and airway inflammation but is expensive and requires sedation. Chest X-rays (CXR) are inexpensive, low-radiation tests that do not require sedations and can document findings associated with infectious or inflammatory lung disease. The accuracy of CXR to predict or exclude infectious or inflammatory lung disease has not been directly evaluated and is unknown. METHODS Retrospective cohort of all pediatric patients who underwent FFB with BAL within 2 weeks of a CXR. Blinded CXR images reviewed for findings consistent with inflammatory disease by two senior pediatric radiologists. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for CXR to identify significant inflammation and/or infection on BAL were calculated. RESULTS Three hundred and forty-four subjects included. Two hundred and sixty-three had positive CXR (77%), 183 had inflammatory BAL (53%), and 110 had infection (32%). The sensitivity of CXR changes for BAL inflammation, infection, and either inflammation or infection was 84.7, 90.9, and 85.3, respectively. The PPV of CXR was 58.9, 38.0, and 59.7. The NPV of CXR was 65.0, 87.5, and 66.3. CONCLUSIONS Although CXR are inexpensive, do not require sedation, and are of low radiation dose, the ability of an entirely normal CXR to exclude active inflammatory or infectious lung disease is limited.
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Affiliation(s)
- Nate C Hull
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Paul G Thacker
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Richard Paul Boesch
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Singhal KK, Singh R. Chronic Suppurative Lung Disease in Children: A Case Based Approach. Indian J Pediatr 2023; 90:920-926. [PMID: 37389774 DOI: 10.1007/s12098-023-04665-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 05/04/2023] [Indexed: 07/01/2023]
Abstract
Bronchiectasis is a pathologic state of conducting airways manifested radiographically by evidence of bronchial dilation and clinically by chronic productive cough. Considered an "orphan disease" for long, it remains a major contributor to morbidity and mortality in both developed and underdeveloped countries. With the advances in the medical field accompanied by widespread access to vaccines and antibiotics, improved health services and better access to nutrition, the incidences of bronchiectasis have markedly decreased, particularly in developed countries. This review summarizes the current knowledge pertaining to the clinical definition, etiology, clinical approach and management related to pediatric bronchiectasis.
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Affiliation(s)
- Kamal Kumar Singhal
- Division of Pediatric Pulmonology, Department of Pediatrics, Lady Hardinge Medical College and Kalawati Saran Children's Hospital, Shaheed Bhagat Singh Marg, New Delhi, India.
| | - Robin Singh
- Division of Pediatric Pulmonology, Department of Pediatrics, Lady Hardinge Medical College and Kalawati Saran Children's Hospital, Shaheed Bhagat Singh Marg, New Delhi, India
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Clinical Course of Children with Chronic Suppurative Lung Disease or Bronchiectasis Infected with Pseudomonas aeruginosa. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9121822. [PMID: 36553266 PMCID: PMC9776566 DOI: 10.3390/children9121822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/20/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
Children with chronic wet cough and without cystic fibrosis (non-CF) may suffer from chronic suppurative lung disease (CSLD) or bronchiectasis. Pseudomonas aeruginosa (Pa) can be one of the offending microbes in these children. The present study aimed to describe the clinical course of children with the above two conditions who were infected with Pa. Data of 54 children with CSLD/bronchiectasis who were diagnosed and attended in our department were retrospectively analysed through a Cox proportional hazard model, with age, presence of bronchiectasis, use of inhaled colistin, azithromycin, inhaled hypertonic saline as the covariates. In 42 of the 54 patients, there was no identifiable cause or underlying chronic disorder. Microbiological clearance was defined as the absence of daily wet cough for four months along with four negative cultures taken during the last four consecutive follow-up visits. Multivariate analysis was performed with a Cox proportional hazard model with time to microbiological clearance as the outcome. Results are described as Hazard Ratios (HR) with 95% Confidence Intervals (95%CI). Nebulised antibiotics and the presence of bronchiectasis were statistically significant predictors of remission (HR: 3.99; 95%CI: 1.12-14.14; p = 0.032, and HR: 0.24; 95%CI: 0.08-0.71; p = 0.010). In conclusion, the rate of microbiological clearance increases with the use of inhaled colistin and decreases when there is established bronchiectasis.
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Extended Versus Standard Antibiotic Course Duration in Children <5 Years of Age Hospitalized With Community-acquired Pneumonia in High-risk Settings: Four-week Outcomes of a Multicenter, Double-blind, Parallel, Superiority Randomized Controlled Trial. Pediatr Infect Dis J 2022; 41:549-555. [PMID: 35476706 DOI: 10.1097/inf.0000000000003558] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
BACKGROUND High-level evidence is limited for antibiotic duration in children hospitalized with community-acquired pneumonia (CAP) from First Nations and other at-risk populations of chronic respiratory disorders. As part of a larger study, we determined whether an extended antibiotic course is superior to a standard course for achieving clinical cure at 4 weeks in children 3 months to ≤5 years old hospitalized with CAP. METHODS In our multinational (Australia, New Zealand, Malaysia), double-blind, superiority randomized controlled trial, children hospitalized with uncomplicated, radiographic-confirmed, CAP received 1-3 days of intravenous antibiotics followed by 3 days of oral amoxicillin-clavulanate (80 mg/kg, amoxicillin component, divided twice daily) and then randomized to extended (13-14 days duration) or standard (5-6 days) antibiotics. The primary outcome was clinical cure (complete resolution of respiratory symptoms/signs) 4 weeks postenrollment. Secondary outcomes included adverse events, nasopharyngeal bacterial pathogens and antimicrobial resistance at 4 weeks. RESULTS Of 372 children enrolled, 324 fulfilled the inclusion criteria and were randomized. Using intention-to-treat analysis, between-group clinical cure rates were similar (extended course: n = 127/163, 77.9%; standard course: n = 131/161, 81.3%; relative risk = 0.96, 95% confidence interval = 0.86-1.07). There were no significant between-group differences for adverse events (extended course: n = 43/163, 26.4%; standard course, n = 32/161, 19.9%) or nasopharyngeal carriage of Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis and Staphylococcus aureus or antimicrobial resistance. CONCLUSIONS Among children hospitalized with pneumonia and at-risk of chronic respiratory illnesses, an extended antibiotic course was not superior to a standard course at achieving clinical cure at 4 weeks. Additional research will identify if an extended course provides longer-term benefits.
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Mukerji SS, Yenduri NJS, Chiou E, Moonnumakal SP, Bedwell JR. A multi‐disciplinary approach to chronic cough in children. Laryngoscope Investig Otolaryngol 2022; 7:409-416. [PMID: 35434349 PMCID: PMC9008181 DOI: 10.1002/lio2.778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 01/02/2022] [Accepted: 01/31/2022] [Indexed: 11/20/2022] Open
Abstract
Objectives (1) To highlight the important causes of chronic and recurrent cough in children. (2) To discuss multidisciplinary approach to management of chronic/recurrent pediatric cough. Methods Review of scholarly articles, guidelines, expert panels via PubMed and Google Scholar. Conclusion Chronic cough (CC) in children is mainly attributed to persistent bacterial bronchitis, asthma, nonspecific cough, and gastroesophageal reflux disease (GERD) symptoms. A multi‐disciplinary approach is cost‐effective and aids with earlier diagnosis and appropriate treatment. Congenital or acquired narrowing of the subglottis is the leading ENT cause for recurrent croup (RC) in children. Laryngeal cleft‐type 1 is commonly seen in children with recurrent aspiration and CC. Children are usually referred to pulmonologists for wet cough not responding to treatment. Eosinophilic esophagitis (EoE) and GERD should be considered in the differential diagnosis of CC in children with both respiratory symptoms and failure to thrive. Level of Evidence: 2a
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Affiliation(s)
- Shraddha S. Mukerji
- Department of Otolaryngology Head Neck Surgery Baylor College of Medicine, Texas Children's Hospital Houston Texas USA
| | - Naga Jaya Smitha Yenduri
- Department of Pulmonary Medicine and Critical Care Baylor College of Medicine, Texas Children's Hospital Houston Texas USA
| | - Eric Chiou
- Department of Gastroenterology and Nutrition Baylor College of Medicine, Texas Children's Hospital Houston Texas USA
| | - Siby P. Moonnumakal
- Department of Pulmonary Medicine and Critical Care Baylor College of Medicine, Texas Children's Hospital Houston Texas USA
| | - Joshua R. Bedwell
- Department of Otolaryngology Head Neck Surgery Baylor College of Medicine, Texas Children's Hospital Houston Texas USA
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Diagnostic Accuracy of Nasopharyngeal Swab Cultures in Children Less Than Five Years with Chronic Wet Cough. CHILDREN (BASEL, SWITZERLAND) 2021; 8:children8121161. [PMID: 34943357 PMCID: PMC8700365 DOI: 10.3390/children8121161] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 11/28/2021] [Accepted: 12/07/2021] [Indexed: 11/16/2022]
Abstract
Background: It is necessary to find a non-invasive and accurate procedure to predict persistent bacterial bronchitis (PBB) causative organisms and guide antibiotic therapy. The study objective was to compare the diagnostic accuracy of nasopharyngeal swab cultures with bronchoalveolar lavage (BAL) cultures in children with PBB. Methods: Nasopharyngeal swab and BAL fluid specimens were collected and cultured for bacterial pathogens prospectively from less than five-year-old children undergoing flexible bronchoscopy for chronic wet cough. Results: Of the 59 children included in the study, 26 (44.1%) patients had a positive BAL bacterial culture with neutrophilic inflammation. Prevalence of positive cultures for any of the four common respiratory pathogens implicated in PBB (Moraxella catarrhalis, Streptococcus pneumoniae, Staphylococcus aureus, and Haemophilus influenzae) was significantly higher (p = 0.001) in NP swabs compared to BAL fluids (86.4% and 44.1% of PBB cases, respectively). NP swab cultures for any of the four main bacterial pathogens had 85% (95% CI: 65–96%) and 48% (95% CI: 31–66%) sensitivity and specificity of detecting PBB, respectively. Positive and negative predictive values were 56% (95% CI: 47–65%) and 80% (95% CI: 60–91%), respectively. In conclusion, in children less than 5 years of age with chronic wet cough (PBB-clinical), a negative NP swab result reduces the likelihood of lower airway infection; however, a positive NP swab does not accurately predict the presence of lower airway pathogens. Flexible bronchoscopy should be considered in those with recurrent PBB-clinical or with clinical pointers of central airway anomalies.
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Duration of amoxicillin-clavulanate for protracted bacterial bronchitis in children (DACS): a multi-centre, double blind, randomised controlled trial. THE LANCET RESPIRATORY MEDICINE 2021; 9:1121-1129. [PMID: 34048716 DOI: 10.1016/s2213-2600(21)00104-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/04/2021] [Accepted: 02/17/2021] [Indexed: 01/26/2023]
Abstract
BACKGROUND Protracted bacterial bronchitis (PBB) is a leading cause of chronic wet cough in children. The current standard treatment in European and American guidelines is 2 weeks of antibiotics, but the optimal duration of therapy is unknown. We describe the first randomised controlled trial to assess the duration of antibiotic treatment in children with chronic wet cough and suspected PBB. We hypothesise that 4 weeks of amoxicillin-clavulanate is superior to 2 weeks for improving clinical outcomes. METHODS Our parallel, double-blind, placebo-controlled, randomised controlled trial was completed in four Australian hospitals. Children aged 2 months to 19 years with chronic (>4 weeks duration) wet cough, and suspected PBB were randomly assigned (1:1) using permuted block randomisation (stratified by age and site) to 4 weeks of amoxicillin-clavulanate (25-35 mg/kg twice daily oral suspension; 4-week group) or 2 weeks of amoxicillin-clavulanate followed by 2 weeks of placebo (2-week group). The children, caregivers, all the study coordinators, and investigators were masked to treatment assignment until data analysis was completed. The primary outcome was clinical cure (cough resolution) by day 28. Secondary outcomes were recurrence of PBB at 6 months, time to next exacerbation, change in Parent-proxy Cough-Specific Quality-of-Life (PC-QoL) score from baseline to day 28 and from day 28 to 7 months, adverse events, nasal swab bacteriology, and antimicrobial resistance. Analyses followed the intention-to-treat principle. This trial is complete and registered with Australian/New Zealand Registry, ACTRN12616001725459. FINDINGS Between March 8, 2017, and Sept 30, 2019, 106 children were randomly assigned (52 in the 4-week group, median age 2·2 years [IQR 1·3-4·1]; 54 in the 2-week group, median age 1·7 years [1·2-3·8]) with 90 children completing the 4-week treatment. By day 28, the primary endpoint of clinical cure in the 4-week group (32 [62%] of 52 patients) was not significantly different to the 2-week group (38 [70%] of 54 patients; adjusted relative risk 0·87 [95% CI 0·60 to 1·28]; p=0·49). Time to next wet cough exacerbation was significantly longer in the 4-week group than the 2-week group (median 150 days [IQR 38-181] vs 36 days [15-181]; adjusted hazard ratio 0·47 [0·25 to 0·90]; p=0·02). The rate of recurrence of PBB at 6 months was 17 (53%) of 32 patients in the 4-week group vs 28 (74%) of 38 patients in the 2-week group, but the difference between the groups was not significant (adjusted odds ratio 0·39 [0·14 to 1·04]; p=0·07). PC-QoL significantly improved from baseline to day 28 in both groups, but there was no significant difference between them (mean difference in change -0·2 [95% CI -1·0 to 0·6]; p=0·64). From day 28 to 7 months, median PC-QoL remained stable in both groups with no difference in change between them. Data on respiratory pathogens and antimicrobial resistance (paired swabs available for 48 children) were similar between groups. Adverse events occurred in 13 (25%) children in the 2-week group and ten (19%) in the 4-week group (p=0·57). INTERPRETATION A 4-week course of amoxicillin-clavulanate for treating children with chronic wet cough and suspected PBB confers little advantage compared with a 2-week course in achieving clinical cure by 28 days. However, as a 4-week duration led to a longer cough-free period, identifying children who would benefit from a longer antibiotic course is a priority. FUNDING Queensland Children's Hospital Foundation.
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Nursoy MA, Kilinc AA, Abdillahi FK, Ustabas Kahraman F, Al Shadfan LM, Sumbul B, Sennur Bilgin S, Cakir FB, Daskaya H, Cakir E. Relationships Between Bronchoscopy, Microbiology, and Radiology in Noncystic Fibrosis Bronchiectasis. PEDIATRIC ALLERGY IMMUNOLOGY AND PULMONOLOGY 2021; 34:46-52. [PMID: 33989070 DOI: 10.1089/ped.2020.1319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Background: Published data on the correlations of bronchoscopy findings with microbiological, radiological, and pulmonary function test results in children with noncystic fibrosis (CF) bronchiectasis (BE) are unavailable. The aims of this study were to evaluate relationships between Bronchoscopic appearance and secretion scoring, microbiological growth, radiological severity level, and pulmonary function tests in patients with non-CF BE. Methods: Children with non-CF BE were identified and collected over a 6-year period. Their medical charts and radiologic and bronchoscopic notes were retrospectively reviewed. Results: The study population consisted of 54 female and 49 male patients with a mean age of 11.7 ± 3.4 years. In the classification according to the bronchoscopic secretion score, Grade I was found in 2, Grade II in 4, Grade III in 9, Grade IV in 17, Grade V in 25, and Grade VI in 46 patients. When evaluated according to the Bhalla scoring system, 45 patients had mild BE, 37 had moderate BE, and 21 had severe BE. Microbial growth was detected in bronchoalveolar lavage fluid from 50 of the patients. Forced expiratory volume in 1 s (FEV1) and functional vital capacity decreased with increasing bronchoscopic secretion grade (P = 0.048 and P = 0.04), respectively. The degree of radiological severity increased in parallel with the bronchoscopic secretion score (P = 0.007). However, no relationship was detected between microbiological growth rate and radiological findings (P = 0.403). Conclusions: This study showed that bronchoscopic evaluation and especially scoring of secretions correlate with severe clinical condition, decrease in pulmonary function test, worsening in radiology scores, and increase in microbiological bacterial load in patients. Flexible endoscopic bronchoscopy should be kept in mind in the initial evaluation of non-CF BE patients.
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Affiliation(s)
- Mustafa Atilla Nursoy
- Department of Pediatrics, Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
| | - Ayse Ayzit Kilinc
- Department of Pediatric Pulmonology, Istanbul Cerrahpasa University Medical Faculty, Istanbul, Turkey
| | | | | | | | - Bilge Sumbul
- Department of Microbiology, Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
| | | | - Fatma Betul Cakir
- Department of Pediatrics, Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
| | - Hayrettin Daskaya
- Department of Anaesthesiology, and Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
| | - Erkan Cakir
- Department of Pediatric Pulmonolgy, Bezmialem Vakif University Medical Faculty, Istanbul, Turkey
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Craven V, Hausdorff WP, Everard ML. High levels of inherent variability in microbiological assessment of bronchoalveolar lavage samples from children with persistent bacterial bronchitis and healthy controls. Pediatr Pulmonol 2020; 55:3209-3214. [PMID: 32915513 DOI: 10.1002/ppul.25067] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 01/02/2023]
Abstract
Bronchoalveolar lavage (BAL) is widely regarded as providing "gold standard" samples for infective lower respiratory tract disease. Current approaches have been adopted empirically without robust assessment and hence carry many assumptions that have not been tested. Many of these uncertainties were highlighted in the ATS pediatric bronchoscopy guidelines. This study was designed to explore some of these issues. BAL was undertaken via an endotracheal tube in 13 subjects aged less than 6 years with persistent bacterial bronchitis and five healthy controls. Aliquots of the same pooled BAL sample were sent to two accredited laboratories. one producing semiquantitative results and the other quantitative results. For five patients potentially pathogenic bacteria were grown by one laboratory but not the other, while in three more there were discrepancies in the organisms reported. Despite being symptomatic and off antibiotics, only 3 of 13 patients were reported to have a pathogen at a density of more than 1 × 104 colony forming unit. There was at best a poor correlation between semiquantitative and quantitative data. Potential pathogens were cultured in two of five control samples. The results suggest that the results from conventional microbiological assessment of BAL samples can be highly variable and that the proposal that a discrete cut-off is of value in patients with chronic endobronchial infection is probably invalid.
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Affiliation(s)
- Vanessa Craven
- Department of Respiratory Medicine, Sheffield Children's Hospital, Sheffield, UK
| | - William P Hausdorff
- PATH, Washington, DC, USA.,Faculty of Medicine, Université Libre de Bruxelles, Brussels, Belgium
| | - Mark L Everard
- Division of Child Health, Perth Children's Hospital, University of Western Australia, Nedlands, Western Australia, Australia
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14
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Eg KP, Thomas RJ, Masters IB, McElrea MS, Marchant JM, Chang AB. Development and validation of a bronchoscopically defined bronchitis scoring tool in children. Pediatr Pulmonol 2020; 55:2444-2451. [PMID: 32584469 DOI: 10.1002/ppul.24924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 05/29/2020] [Accepted: 06/23/2020] [Indexed: 12/30/2022]
Abstract
INTRODUCTION/AIM A validated tool for scoring bronchitis during flexible bronchoscopy (FB) is potentially useful for clinical practice and research. We aimed to develop a bronchoscopically defined bronchitis scoring system in children (BScore) based on our pilot study. METHODS Children undergoing FB were prospectively enrolled. Their FB was digitally recorded and assessed (two clinicians blinded to each other and clinical history) for six features: secretion amount (six-point scale), secretion color (BronkoTest, 0-8), mucosal oedema (0-3), ridging (0-3), erythema (0-3), and pallor (0-3) based on pre-determined criteria. We correlated (Spearman's rho) each feature with bronchoalveolar lavage (BAL) neutrophil percentage (neutrophil%). BScore was then derived using models with combinations of the six features that best related to airway BAL neutrophil%. The various models of BScore were plotted against BAL neutrophil% using receiver operating characteristic (ROC) curves. RESULTS We analyzed 142 out of 150 children enrolled. Eight children were excluded for unavailability of BAL cytology or FB recordings. Chronic/recurrent cough was the commonest indication for FB (75%). The median age was 3 years (IQR, 1.5-5.3 years). Secretion amount (r = 0.42) and color (r = 0.46), mucosal oedema (r = 0.42), and erythema (r = 0.30) significantly correlated with BAL neutrophil%, P < .0001. The highest area under ROC (aROC) was obtained by the addition of the scores of all features excluding pallor (aROC = 0.84; 95% CI, 0.76-0.90) with airway neutrophilia (defined as BAL neutrophil% of >10%). CONCLUSION This prospective study has developed the first validated bronchitis scoring tool in children based on bronchoscopic visual inspection of airways. Further validation in other cohorts is however required.
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Affiliation(s)
- Kah Peng Eg
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia.,Department of Paediatrics, Division of Respiratory and Sleep Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Rahul J Thomas
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia
| | - Ian B Masters
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia
| | - Margaret S McElrea
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Julie M Marchant
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Anne B Chang
- Department of Respiratory and Sleep Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Centre for Children's Health Research, Queensland University of Technology, Brisbane, Queensland, Australia.,Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
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15
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Wong OY, Marchant JM, Yerkovich ST, Chang AB. Predictors of time to cough resolution in children with chronic wet cough treated with antibiotics after bronchoscopy. Pediatr Pulmonol 2019; 54:1997-2002. [PMID: 31496125 DOI: 10.1002/ppul.24506] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Accepted: 08/21/2019] [Indexed: 11/05/2022]
Abstract
BACKGROUND Chronic wet cough is common in pediatric pulmonology practice and is clinically important. Guidelines recommend treatment with antibiotics as their effectiveness has been proven. However, factors associated with duration of cough in response to antibiotics in children with chronic wet cough have not been prospectively examined. OBJECTIVE To determine if demographic, clinical and/or bronchoalveolar lavage (BAL) factors are associated with "time to cough resolution" in children with chronic wet cough treated with antibiotics after bronchoscopy. METHODS Data from children with chronic wet cough treated with antibiotics after bronchoscopy were extracted from a prospective cohort study database. Cough dairies were used to determine when the cough resolved. Associations between various factors with "time to cough resolution" were examined using regression. RESULTS The median age of the 133 children was 2.4 years (interquartile range, 1.4-4.9). Duration of prior cough at bronchoscopy was significantly positively related with "time to cough resolution" (β = .010; 95% confidence interval, 0.004-0.017; P = .002). This translated to; for each month of prior cough, it took an extra 1.02 days to achieve cough resolution while on antibiotic treatment. Gender, age, diagnosis, tobacco smoke exposure, pneumonia history, blood cellularity, and BAL cellular and microbiology profiles were not significantly associated with time to cough resolution. CONCLUSION In children with chronic wet cough, duration of cough before antibiotic treatment is a small but significant determinant of "time to cough resolution." Research using standardized antibiotic regimes is required to provide clinical and/or biomarkers that can further identify factors associated with the response of chronic cough to antibiotic treatment.
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Affiliation(s)
- Oi Yin Wong
- Department of Paediatric and Adolescent Medicine, Tuen Mun Hospital, Tuen Mun, Hong Kong.,Children's Centre of Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Julie M Marchant
- Children's Centre of Health Research, Queensland University of Technology, Brisbane, Queensland, Australia.,Department of Respiratory and Sleep Medicine, Children's Health Queensland, Queensland Children's Hospital, Brisbane, Queensland, Australia
| | | | - Anne B Chang
- Children's Centre of Health Research, Queensland University of Technology, Brisbane, Queensland, Australia.,Department of Respiratory and Sleep Medicine, Children's Health Queensland, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Child Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
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16
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Laird P, Walker R, Lane M, Chang AB, Schultz A. We won't find what we don't look for: Identifying barriers and enablers of chronic wet cough in Aboriginal children. Respirology 2019; 25:383-392. [DOI: 10.1111/resp.13642] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 05/03/2019] [Accepted: 06/10/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Pamela Laird
- Telethon Kids InstituteThe University of Western Australia Perth WA Australia
- Division of Paediatrics, School of MedicineThe University of Western Australia Perth WA Australia
- Departments of Respiratory Medicine and Physiotherapy, Perth Children's Hospital Perth WA Australia
| | - Roz Walker
- Telethon Kids InstituteThe University of Western Australia Perth WA Australia
- Division of Paediatrics, School of MedicineThe University of Western Australia Perth WA Australia
| | - Mary Lane
- Broome Regional Aboriginal Medical Service Broome WA Australia
| | - Anne B. Chang
- Child Health Division, Menzies School of Health ResearchCharles Darwin University Darwin NT Australia
| | - André Schultz
- Telethon Kids InstituteThe University of Western Australia Perth WA Australia
- Division of Paediatrics, School of MedicineThe University of Western Australia Perth WA Australia
- Departments of Respiratory Medicine and Physiotherapy, Perth Children's Hospital Perth WA Australia
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D'Sylva P, Walker R, Lane M, Chang AB, Schultz A. Chronic wet cough in Aboriginal children: It's not just a cough. J Paediatr Child Health 2019; 55:833-843. [PMID: 30444010 DOI: 10.1111/jpc.14305] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/13/2018] [Accepted: 10/21/2018] [Indexed: 12/11/2022]
Abstract
AIM Chronic respiratory disease is common among Aboriginal Australians. Chronic wet cough is an early marker of chronic disease in children but often goes undetected due, in part, to delayed health seeking by families. Currently, no studies have examined the reasons for delayed health seeking for children's chronic cough. To identify the barriers to, and enablers for, seeking medical help for chronic wet cough in Aboriginal children. METHODS This was a qualitative study, gathering data through individual semi-structured, in-depth interviews and focus groups to ascertain Aboriginal family knowledge, attitudes and beliefs about seeking health care for chronic wet cough in children in a regional Kimberley town, Western Australia between October 2017 and March 2018. RESULTS Forty Aboriginal community members participated. The three key barriers identified were: 'Cough normalisation', that is, 70% of participants considered chronic cough normal (with 53% of participants' previous interactions with doctors informing their understanding of chronic cough); the lack of health literacy information; and a sense of disempowerment (belief that no medical action would be taken and inability to challenge doctors). The key expressed enablers were provision of health literacy information and health practitioner training to assess and treat chronic wet cough in children. All participants reported that they would seek help for chronic wet cough once they were informed that it could signify underlying disease. CONCLUSION Results highlight the need for a culturally appropriate information and education to inform Aboriginal families and their health practitioners of the importance of chronic wet cough in children.
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Affiliation(s)
- Pamela D'Sylva
- Child Health, School of Medicine, University of Western Australia, Perth, Western Australia, Australia.,Kulunga Aboriginal Research Development Unit, Telethon Kids Institute, Perth, Western Australia, Australia.,Physiotherapy Department, Perth Children's Hospital, Perth, Western Australia, Australia
| | - Roz Walker
- Kulunga Aboriginal Research Development Unit, Telethon Kids Institute, Perth, Western Australia, Australia
| | - Mary Lane
- Broome Aboriginal Medical Service, Broome, Western Australia, Australia
| | - Anne B Chang
- Department of Respiratory Medicine, Queensland Children's Hospital, Brisbane, Queensland, Australia.,Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - André Schultz
- Child Health, School of Medicine, University of Western Australia, Perth, Western Australia, Australia.,Kulunga Aboriginal Research Development Unit, Telethon Kids Institute, Perth, Western Australia, Australia.,Department of Respiratory Medicine, Perth Children's Hospital, Perth, Western Australia, Australia
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18
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Wang Y, Hao C, Ji W, Lu Y, Wu M, Chen S, Wang K, Shao X. Detecting respiratory viruses in children with protracted bacterial bronchitis. Respir Med 2019; 151:55-58. [DOI: 10.1016/j.rmed.2019.04.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/31/2019] [Accepted: 04/01/2019] [Indexed: 01/11/2023]
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19
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Chang AB, Fong SM, Yeo TW, Ware RS, McCallum GB, Nathan AM, Ooi MH, de Bruyne J, Byrnes CA, Lee B, Nachiappan N, Saari N, Torzillo P, Smith-Vaughan H, Morris PS, Upham JW, Grimwood K. HOspitalised Pneumonia Extended (HOPE) Study to reduce the long-term effects of childhood pneumonia: protocol for a multicentre, double-blind, parallel, superiority randomised controlled trial. BMJ Open 2019; 9:e026411. [PMID: 31023759 PMCID: PMC6502017 DOI: 10.1136/bmjopen-2018-026411] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 12/06/2018] [Accepted: 01/08/2019] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION Early childhood pneumonia is a common problem globally with long-term complications that include bronchiectasis and chronic obstructive pulmonary disease. It is biologically plausible that these long-term effects may be minimised in young children at increased risk of such sequelae if any residual lower airway infection and inflammation in their developing lungs can be treated successfully by longer antibiotic courses. In contrast, shortened antibiotic treatments are being promoted because of concerns over inducing antimicrobial resistance. Nevertheless, the optimal treatment duration remains unknown. Outcomes from randomised controlled trials (RCTs) on paediatric pneumonia have focused on short-term (usually <2 weeks) results. Indeed, no long-term RCT-generated outcome data are available currently. We hypothesise that a longer antibiotic course, compared with the standard treatment course, reduces the risk of chronic respiratory symptoms/signs or bronchiectasis 24 months after the original pneumonia episode. METHODS AND ANALYSIS This multicentre, parallel, double-blind, placebo-controlled randomised trial involving seven hospitals in six cities from three different countries commenced in May 2016. Three-hundred-and-fourteen eligible Australian Indigenous, New Zealand Māori/Pacific and Malaysian children (aged 0.25 to 5 years) hospitalised for community-acquired, chest X-ray (CXR)-proven pneumonia are being recruited. Following intravenous antibiotics and 3 days of amoxicillin-clavulanate, they are randomised (stratified by site and age group, allocation-concealed) to receive either: (i) amoxicillin-clavulanate (80 mg/kg/day (maximum 980 mg of amoxicillin) in two-divided doses or (ii) placebo (equal volume and dosing frequency) for 8 days. Clinical data, nasopharyngeal swab, bloods and CXR are collected. The primary outcome is the proportion of children without chronic respiratory symptom/signs of bronchiectasis at 24 months. The main secondary outcomes are 'clinical cure' at 4 weeks, time-to-next respiratory-related hospitalisation and antibiotic resistance of nasopharyngeal respiratory bacteria. ETHICS AND DISSEMINATION The Human Research Ethics Committees of all the recruiting institutions (Darwin: Northern Territory Department of Health and Menzies School of Health Research; Auckland: Starship Children's and KidsFirst Hospitals; East Malaysia: Likas Hospital and Sarawak General Hospital; Kuala Lumpur: University of Malaya Research Ethics Committee; and Klang: Malaysian Department of Health) have approved the research protocol version 7 (13 August 2018). The RCT and other results will be submitted for publication. TRIAL REGISTRATION ACTRN12616000046404.
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Affiliation(s)
- Anne B Chang
- Child Health Division, Menzies School of Health Research, Charles Darwin Univ, Darwin, Northern Territory, Australia
- Qld Children's Hospital, Brisbane, Queensland, Australia
| | | | - Tsin Wen Yeo
- Global and Tropical Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - Robert S Ware
- School of Population Health, The University of Queensland, Brisbane, Queensland, Australia
| | - Gabrielle B McCallum
- Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
| | | | - Mong H Ooi
- Universiti Malaysia Sarawak, Kuching, Malaysia
| | | | | | - Bilawara Lee
- Charles Darwin University, Darwin, Northern Territory, Australia
| | | | | | - Paul Torzillo
- Prince Alfred Hospital, Sydney, New South Wales, Australia
| | - Heidi Smith-Vaughan
- Child Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - Peter S Morris
- Menzies School of Health Research, Darwin, Northern Territory, Australia
| | - John W Upham
- School of Medicine, The University of Queensland, Brisbane, Queensland, Australia
| | - Keith Grimwood
- Menzies Health Institute Queensland, Griffith University, Southport, Queensland, Australia
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Quint JK, Smith MP. Paediatric and adult bronchiectasis: Diagnosis, disease burden and prognosis. Respirology 2019; 24:413-422. [DOI: 10.1111/resp.13495] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 11/22/2018] [Accepted: 12/19/2018] [Indexed: 12/15/2022]
Affiliation(s)
| | - Maeve P. Smith
- Division of Pulmonary Medicine, Department of MedicineUniversity of Alberta Edmonton AB Canada
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21
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Chang AB, Redding GJ. Bronchiectasis and Chronic Suppurative Lung Disease. KENDIG'S DISORDERS OF THE RESPIRATORY TRACT IN CHILDREN 2019. [PMCID: PMC7161398 DOI: 10.1016/b978-0-323-44887-1.00026-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Douros K, Kremmydas G, Grammeniatis V, Papadopoulos M, Priftis KN, Alexopoulou E. Helical multi-detector CT scan as a tool for diagnosing tracheomalacia in children. Pediatr Pulmonol 2019; 54:47-52. [PMID: 30485735 DOI: 10.1002/ppul.24188] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 10/01/2018] [Indexed: 01/08/2023]
Abstract
BACKGROUND/AIMS Tracheomalacia (TM) is not an unusual diagnosis in pediatric respiratory clinics. The aim of this study was to assess the accuracy of paired static end-inspiratory/end-expiratory helical multi-detector CT scan (MDCT) in detecting TM. METHODS FB was performed in 28 children suspected of TM on the grounds of presence of recurrent episodes of vibrating cough and a need for more specific diagnostic information. Children diagnosed with flexible bronchoscopy (FB) as having TM were further investigated with MDCT. The cross-sectional area ratio of the trachea during end-expiration and end-inspiration, at the level of maximum end-expiration collapse (CSR), determined the basis for the MDCT diagnosis of TM. FB and MDCT were also performed in five children who suffered from mainly dry-but not honking, barking, or vibrating-cough for more than 3 months, and served as controls. RESULTS The diagnosis of TM was established bronchoscopically in 26 out of 28 children. CRS was significantly smaller in patients (0.59 ± 0.14) compared with controls (0.85 ± 0.11) (P = 0.001). The optimal CSR cut-off point for TM diagnosis, as it was estimated by the ROC curve, was ≤0.705 (95%CI: ≤0.635-≤0.850) with a sensitivity 84.6% (95%CI: 65.1-95.6), and specificity 100.0% (95%CI: 47.8-100.0). CONCLUSIONS MDCT can effectively diagnose TM in the majority of children and can be used as an alternative to FB. In children, the established criterion of CSR ≤0.5 should be replaced by CSR ≤0.7 that seems to be a more appropriate threshold.
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Affiliation(s)
- Konstantinos Douros
- Allergology and Pulmonology Unit, 3rd Pediatric Department, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Gerasimos Kremmydas
- Second Department of Radiology, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Vasilis Grammeniatis
- Allergology and Pulmonology Unit, 3rd Pediatric Department, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Marios Papadopoulos
- Allergology and Pulmonology Unit, 3rd Pediatric Department, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Kostas N Priftis
- Allergology and Pulmonology Unit, 3rd Pediatric Department, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Efthymia Alexopoulou
- Second Department of Radiology, Attikon Hospital, National and Kapodistrian University of Athens, Athens, Greece
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Navaratnam V, Forrester DL, Eg KP, Chang AB. Paediatric and adult bronchiectasis: Monitoring, cross-infection, role of multidisciplinary teams and self-management plans. Respirology 2018; 24:115-126. [PMID: 30500093 DOI: 10.1111/resp.13451] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 10/29/2018] [Accepted: 11/05/2018] [Indexed: 01/21/2023]
Abstract
Bronchiectasis is a chronic lung disease associated with structurally abnormal bronchi, clinically manifested by a persistent wet/productive cough, airway infections and recurrent exacerbations. Early identification and treatment of acute exacerbations is an integral part of monitoring and annual review, in both adults and children, to minimize further damage due to infection and inflammation. Common modalities used to monitor disease progression include clinical signs and symptoms, frequency of exacerbations and/or number of hospital admissions, lung function (forced expiratory volume in 1 s (FEV1 )% predicted), imaging (radiological severity of disease) and sputum microbiology (chronic infection with Pseudomonas aeruginosa). There is good evidence that these monitoring tools can be used to accurately assess severity of disease and predict prognosis in terms of mortality and future hospitalization. Other tools that are currently used in research settings such as health-related quality of life (QoL) questionnaires, magnetic resonance imaging and lung clearance index can be burdensome and require additional expertise or resource, which limits their use in clinical practice. Studies have demonstrated that cross-infection, especially with P. aeruginosa between patients with bronchiectasis is possible but infrequent. This should not limit participation of patients in group activities such as pulmonary rehabilitation, and simple infection control measures should be carried out to limit the risk of cross-transmission. A multidisciplinary approach to care which includes respiratory physicians, chest physiotherapists, nurse specialists and other allied health professionals are vital in providing holistic care. Patient education and personalized self-management plans are also important despite limited evidence it improves QoL or frequency of exacerbations.
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Affiliation(s)
- Vidya Navaratnam
- Division of Epidemiology and Public Health, University of Nottingham, Nottingham, UK.,Child Health Division, Menzies School of Health Research, Darwin, NT, Australia
| | - Douglas L Forrester
- Department of Respiratory Medicine, Royal Darwin Hospital, Darwin, NT, Australia
| | - Kah Peng Eg
- Respiratory and Sleep Unit, Department of Paediatrics, University of Malaya, Kuala Lumpur, Malaysia
| | - Anne B Chang
- Child Health Division, Menzies School of Health Research, Darwin, NT, Australia.,Department of Respiratory and Sleep Medicine, Children's Health Queensland, Queensland University of Technology, Brisbane, QLD, Australia
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Naime S, Batra SK, Fiorillo C, Collins ME, Gatti M, Krakovsky GM, Sehgal S, Bauman NM, Pillai DK. Aerodigestive Approach to Chronic Cough in Children. ACTA ACUST UNITED AC 2018; 4:467-479. [PMID: 30859056 DOI: 10.1007/s40746-018-0145-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Purpose of review Chronic cough is the most common presenting complaint in a pediatric aerodigestive clinic. The etiology of chronic cough is varied and often includes more than one organ system. This review aims to summarize the current literature for a multidisciplinary approach when evaluating a child with chronic cough. Recent findings There is very little medical literature focused on a multidisciplinary approach to chronic cough. In the limited data available, multidisciplinary clinics have been shown to be more cost-efficient for the families of children with complex medical problems, and also increase the likelihood of successfully obtaining a diagnosis. Summary There is no consensus in the literature on how to work-up a child with chronic cough presenting to an aerodigestive clinic. Current studies from these clinics have shown improved outcomes related to cost-effectiveness and identifying definitive diagnoses. Future studies evaluating clinical outcomes are necessary to help delineate the utility of testing routinely performed, and to demonstrate the impact of interventions from each specialty on quality of life and specific functional outcome measures.
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Affiliation(s)
- Samira Naime
- Department of Pulmonary and Sleep Medicine, Children's National Health System, Washington, DC, USA.
| | - Suruchi K Batra
- Department of Gastroenterology, Hepatology, and Nutrition, Children's National Health System, Washington, DC, USA.
| | - Caitlin Fiorillo
- Department of Otolaryngology-Head and Neck Surgery, Children's National Health System, Washington, DC, USA.
| | - Maura E Collins
- Department of Hearing and Speech, Children's National Health System, Washington, DC, USA.
| | - Meagan Gatti
- Department of Pulmonary and Sleep Medicine, Children's National Health System, Washington, DC, USA.
| | - Gina M Krakovsky
- Department of Otolaryngology-Head and Neck Surgery, Children's National Health System, Washington, DC, USA.
| | - Sona Sehgal
- Department of Gastroenterology, Hepatology, and Nutrition, Children's National Health System, Washington, DC, USA.
| | - Nancy M Bauman
- Department of Otolaryngology-Head and Neck Surgery, Children's National Health System, Washington, DC, USA.
| | - Dinesh K Pillai
- Department of Pulmonary and Sleep Medicine, Children's National Health System, Washington, DC, USA
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25
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Abstract
Bronchiectasis refers to abnormal dilatation of the bronchi. Airway dilatation can lead to failure of mucus clearance and increased risk of infection. Pathophysiological mechanisms of bronchiectasis include persistent bacterial infections, dysregulated immune responses, impaired mucociliary clearance and airway obstruction. These mechanisms can interact and self-perpetuate, leading over time to impaired lung function. Patients commonly present with productive cough and recurrent chest infections, and the diagnosis of bronchiectasis is based on clinical symptoms and radiological findings. Bronchiectasis can be the result of several different underlying disorders, and identifying the aetiology is crucial to guide management. Treatment is directed at reducing the frequency of exacerbations, improving quality of life and preventing disease progression. Although no therapy is licensed for bronchiectasis by regulatory agencies, evidence supports the effectiveness of airway clearance techniques, antibiotics and mucolytic agents, such as inhaled isotonic or hypertonic saline, in some patients. Bronchiectasis is a disabling disease with an increasing prevalence and can affect individuals of any age. A major challenge is the application of emerging phenotyping and endotyping techniques to identify the patient populations who would most benefit from a specific treatment, with the goal of better targeting existing and emerging treatments and achieving better outcomes.
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26
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Thomas RJ, Eg KP, Masters IB, McElrea M, Chang AB. Towards developing a valid scoring tool for bronchitis during flexible bronchoscopy. Pediatr Pulmonol 2018; 53:1510-1516. [PMID: 30238646 DOI: 10.1002/ppul.24163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/10/2018] [Indexed: 01/30/2023]
Abstract
BACKGROUND A valid bronchoscopic scoring tool for bronchitis would be useful for clinical and research purposes as currently there are none in children. From 100 digitally recorded flexible bronchoscopies (FB), we related the various macroscopic features to airway neutrophil % to develop a FB-derived bronchitis score (BScoreexp ). We aimed to develop a FB-derived bronchitis tool. METHODS FB recordings for six visualised features: secretions (amount and color) and mucosal appearance (erythema, pallor, ridging, oedema) based on pre-determined criteria on a pictorial chart were assessed by two physicians independently, blinded to the clinical history. These features were used to obtain various models of BScoreexp that were plotted against bronchoalveolar lavage (BAL) neutrophil % using a receiver operating characteristic (ROC) curve. Inter- and intra-rater agreement (weighted-kappa, K) were assessed from 30 FBs. RESULTS Using BAL neutrophilia of 20% to define inflammation, the highest area under ROC (aROC) of 0.71, 95%CI 0.61-0.82 was obtained by the giving three times weightage to secretion amount and color and adding it to erythema and oedema. Inter-rater K values for secretion amount (K = 0.87, 95%CI 0.73-1.0) and color (K = 0.86, 95%CI 0.69-1.0) were excellent. Respective intra-rater K were 0.95 (0.87-1.0) and 0.68 (0.47-0.89). Other inter-rater K ranged from 0.4 (erythema) to 0.64 (pallor). CONCLUSION A repeatable FB-defined bronchitis scoring tool can be derived. However, a prospective study needs to be performed with larger numbers to further evaluate and validate these results.
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Affiliation(s)
- Rahul J Thomas
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children Centre for Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Kah P Eg
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children Centre for Health Research, Queensland University of Technology, Brisbane, Queensland, Australia.,Department of Paediatrics, University of Malaya, Kuala Lumpur, Malaysia
| | - Ian B Masters
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children Centre for Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Margaret McElrea
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children Centre for Health Research, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Anne B Chang
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children Centre for Health Research, Queensland University of Technology, Brisbane, Queensland, Australia.,Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Northern Territory, Australia
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27
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Chang AB, Bush A, Grimwood K. Bronchiectasis in children: diagnosis and treatment. Lancet 2018; 392:866-879. [PMID: 30215382 DOI: 10.1016/s0140-6736(18)31554-x] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 05/28/2018] [Accepted: 06/29/2018] [Indexed: 12/12/2022]
Abstract
Bronchiectasis is conventionally defined as irreversible dilatation of the bronchial tree. Bronchiectasis unrelated to cystic fibrosis is an increasingly appreciated cause of chronic respiratory-related morbidity worldwide. Few randomised controlled trials provide high-level evidence for management strategies to treat the children affected by bronchiectasis. However, both decades-old and more recent studies using technological advances support the notion that prompt diagnosis and optimal management of paediatric bronchiectasis is particularly important in early childhood. Although considered to be of a non-reversible nature, mild bronchiectasis determined by radiography might be reversible at any age if treated early, and the lung function decline associated with disease progression could then be halted. Although some management strategies are extrapolated from cystic fibrosis or adult-based studies, or both, non-cystic fibrosis paediatric-specific data to help diagnose and manage these children still need to be generated. We present current knowledge and an updated definition of bronchiectasis, and review controversies relating to the management of children with bronchiectasis, including applying the concept of so-called treatable traits.
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Affiliation(s)
- Anne B Chang
- Child Health Division, Menzies School of Health Research, Casuarina, NT, Australia; Department of Respiratory Medicine, Children's Health Queensland, Brisbane, QLD, Australia; Queensland University of Technology, Brisbane, QLD, Australia.
| | - Andrew Bush
- Head of Section (Paediatrics), Imperial College London, London, UK; National Heart and Lung Institute, London, UK; Royal Brompton Harefield NHS Foundation Trust, London, UK
| | - Keith Grimwood
- Royal Brompton Harefield NHS Foundation Trust, London, UK; Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia; Menzies Health Institute Queensland, Griffith University, Gold Coast, QLD, Australia; Department of Infectious Diseases and Department of Paediatrics, Gold Coast Health, Gold Coast, QLD, Australia
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28
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Abstract
BACKGROUND Cough is a frequent symptom presenting to doctors. The most common cause of childhood chronic (greater than fours weeks' duration) wet cough is protracted bacterial bronchitis (PBB) in some settings, although other more serious causes can also present this way. Timely and effective management of chronic wet or productive cough improves quality of life and clinical outcomes. Current international guidelines suggest a course of antibiotics is the first treatment of choice in the absence of signs or symptoms specific to an alternative diagnosis. This review sought to clarify the current evidence to support this recommendation. OBJECTIVES To determine the efficacy of antibiotics in treating children with prolonged wet cough (excluding children with bronchiectasis or other known underlying respiratory illness) and to assess risk of harm due to adverse events. SEARCH METHODS We undertook an updated search (from 2008 onwards) using the Cochrane Airways Group Specialised Register, Cochrane Register of Controlled Trials (CENTRAL), MEDLINE, Embase, trials registries, review articles and reference lists of relevant articles. The latest searches were performed in September 2017. SELECTION CRITERIA We included randomised controlled trials (RCTs) comparing antibiotics with a placebo or a control group in children with chronic wet cough. We excluded cluster and cross-over trials. DATA COLLECTION AND ANALYSIS We used standard methods as recommended by Cochrane. We reviewed results of searches against predetermined criteria for inclusion. Two independent review authors selected, extracted and assessed the data for inclusion. We contacted authors of eligible studies for further information as needed. We analysed data as 'intention to treat.' MAIN RESULTS We identified three studies as eligible for inclusion in the review. Two were in the previous review and one new study was included. We considered the older studies to be at high or unclear risk of bias whereas we judged the newly included study at low risk of bias. The studies varied in treatment duration (from 7 to 14 days) and the antibiotic used (two studies used amoxicillin/clavulanate acid and one used erythromycin).We included 190 children (171 completed), mean ages ranged from 21 months to six years, in the meta-analyses. Analysis of all three trials (190 children) found that treatment with antibiotics reduced the proportion of children not cured at follow-up (primary outcome measure) (odds ratio (OR) 0.15, 95% confidence interval (CI) 0.07 to 0.31, using intention-to -treat analysis), which translated to a number needed to treat for an additional beneficial outcome (NNTB) of 3 (95% CI 2 to 4). We identified no significant heterogeneity (for both fixed-effect and random-effects model the I² statistic was 0%). Two older trials assessed progression of illness, defined by requirement for further antibiotics (125 children), which was significantly lower in the antibiotic group (OR 0.10, 95% CI 0.03 to 0.34; NNTB 4, 95% CI 3 to 5). All three trials (190 children) reported adverse events, which were not significantly increased in the antibiotic group compared to the control group (OR 1.88, 95% CI 0.62 to 5.69). We assessed the quality of evidence GRADE rating as moderate for all outcome measures, except adverse events which we assessed as low quality. AUTHORS' CONCLUSIONS Evidence suggests antibiotics are efficacious for the treatment of children with chronic wet cough (greater than four weeks) with an NNTB of three. However, antibiotics have adverse effects and this review reported only uncertainty as to the risk of increased adverse effects when they were used in this setting. The inclusion of a more robust study strengthened the previous Cochrane review and its results.
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Affiliation(s)
- Julie M Marchant
- Centre for Children's Health ResearchCough, Asthma, Airways Research GroupSouth BrisbaneAustralia
- Lady Cilento Children's HospitalDepartment of Respiratory and Sleep MedicineBrisbaneAustralia
- Queensland University of TechnologyInstitute of Health and Biomedical InnovationBrisbaneAustralia
| | - Helen L Petsky
- Griffith UniversitySchool of Nursing and Midwifery, Griffith University and Menzies Health Institute QueenslandBrisbaneQueenslandAustralia
| | - Peter S Morris
- Menzies School of Health Research, Charles Darwin UniversityChild Health DivisionPO Box 41096DarwinNorthern TerritoryAustralia0811
| | - Anne B Chang
- Centre for Children's Health ResearchCough, Asthma, Airways Research GroupSouth BrisbaneAustralia
- Lady Cilento Children's HospitalDepartment of Respiratory and Sleep MedicineBrisbaneAustralia
- Queensland University of TechnologyInstitute of Health and Biomedical InnovationBrisbaneAustralia
- Menzies School of Health Research, Charles Darwin UniversityChild Health DivisionPO Box 41096DarwinNorthern TerritoryAustralia0811
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29
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Hill AT, Chang AB. Moving forward: Bronchiectasis and chronic suppurative lung disease in children and adults in the 21st century. Respirology 2018; 23:1004-1005. [DOI: 10.1111/resp.13296] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Accepted: 02/26/2018] [Indexed: 01/12/2023]
Affiliation(s)
- Adam T. Hill
- Department of Respiratory Medicine; Royal Infirmary of Edinburgh; Edinburgh UK
- MRC Centre for Inflammation Research; Queen’s Medical Research Institute; Edinburgh UK
| | - Anne B. Chang
- Department of Respiratory and Sleep Medicine; Children’s Health Queensland, Queensland University of Technology; Brisbane QLD Australia
- Child Health Division; Menzies School of Health Research, Charles Darwin University; Darwin NT Australia
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30
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Bacteria from bronchoalveolar lavage fluid from children with suspected chronic lower respiratory tract infection: results from a multi-center, cross-sectional study in Spain. Eur J Pediatr 2018; 177:181-192. [PMID: 29285648 PMCID: PMC5758651 DOI: 10.1007/s00431-017-3044-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 11/05/2017] [Accepted: 11/06/2017] [Indexed: 12/30/2022]
Abstract
UNLABELLED This cross-sectional study assessed the prevalence of bacteria isolated from Spanish children with suspected chronic lower respiratory tract infection (LRTI) for whom bronchoalveolar lavage (BAL) was indicated. BAL fluid (BALF) was collected from 191 children (aged ≥ 6 months to < 6 years, with persistent or recurrent respiratory symptoms, non-responders to usual treatment) and cultured. Nasopharyngeal swabs (NPSs) were also obtained and cultured to assess concordance of BALF and NPS findings in the same patient. Streptococcus pneumoniae, Haemophilus influenzae, or Moraxella catarrhalis were identified from BALF with a bacterial load indicative of infection (> 104 colony-forming units/mL) in 10.5, 8.9, and 6.3% of children, respectively. Clinical characteristics were similar among participants, regardless of positivity status for any of the bacteria. Approximately 26% of pneumococcal isolates were PCV13 serotypes, and 96% of H. influenzae isolates were non-typeable (NTHi). Concordance between BALF and NPS isolates was 51.0% for S. pneumoniae, 52.1% for H. influenzae, and 22.0% for M. catarrhalis. CONCLUSION S. pneumoniae, NTHi, and M. catarrhalis were the main bacteria detected in BALF and NPS. Children with suspected chronic LRTI may benefit from a vaccine protecting against NTHi. What is Known: • Chronic lower respiratory tract infection (LRTI) in children can cause high morbidity and is a major use of healthcare resources worldwide. Despite this, their etiology or potential preventive measures are poorly assessed. • Bronchoalveolar lavage can be used to determine bacterial etiology of chronic LRTI. What is New: • We used conventional and molecular techniques to show that Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis were present in the LRT of Spanish children with suspected chronic LRTI • Concordance between isolates from bronchoalveolar lavage fluid and nasopharyngeal swabs was low, suggesting that samples from the upper respiratory tract could not reliably predict the bacterial etiology of suspected chronic LRTI.
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31
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Di Filippo P, Scaparrotta A, Petrosino MI, Attanasi M, Di Pillo S, Chiarelli F, Mohn A. An underestimated cause of chronic cough: The Protracted Bacterial Bronchitis. Ann Thorac Med 2018; 13:7-13. [PMID: 29387250 PMCID: PMC5772114 DOI: 10.4103/atm.atm_12_17] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Chronic cough in childhood is associated with a high morbidity and decreased quality of life. Protracted bacterial bronchitis (PBB) seems to be the second most common cause of chronic cough in children under 6 years of age. Its main clinical feature is represented by wet cough that worsens when changing posture and improves after the introduction of antibiotics. Currently, the mainstay of PBB treatment is a 2-week therapy with a high dose of antibiotics, such as co-amoxiclav, to eradicate the infection and restore epithelial integrity. It is very important to contemplate this disease in a child with chronic cough since the misdiagnosis of PBB could lead to complications such as bronchiectasis. Clinicians, however, often do not consider this disease in the differential diagnosis and, consequently, they are inclined to change the antibiotic therapy rather than to extend it or to add steroids. Data sources of this review include PubMed up to December 2016, using the search terms “child,” “chronic cough,” and “protracted bacterial bronchitis.”
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Affiliation(s)
- Paola Di Filippo
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
| | | | | | - Marina Attanasi
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
| | - Sabrina Di Pillo
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
| | | | - Angelika Mohn
- Department of Pediatrics, University of Chieti, 66100 Chieti, Italy
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32
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Gallucci M, di Palmo E, Bertelli L, Camela F, Ricci G, Pession A. A pediatric disease to keep in mind: diagnostic tools and management of bronchiectasis in pediatric age. Ital J Pediatr 2017; 43:117. [PMID: 29284507 PMCID: PMC5747121 DOI: 10.1186/s13052-017-0434-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 12/05/2017] [Indexed: 12/21/2022] Open
Abstract
Bronchiectasis in pediatric age is a heterogeneous disease associated with significant morbidity.The most common medical conditions leading to bronchial damage are previous pneumonia and recurrent lower airway infections followed by underlying diseases such as immune-deficiencies, congenital airway defects, recurrent aspirations and mucociliary clearance disorders.The most frequent symptom is chronic wet cough. The introduction of high-resolution computed tomography (HRCT) has improved the time of diagnosis allowing earlier treatment.However, the term "bronchiectasis" in pediatric age should be used with caution, since some lesions highlighted with HRCT may improve or regress. The use of chest magnetic resonance imaging (MRI) as a radiation-free technique for the assessment and follow-up of lung abnormalities in non-Cystic Fibrosis chronic lung disease is promising.Non-Cystic Fibrosis Bronchiectasis management needs a multi-disciplinary team. Antibiotics and airway clearance techniques (ACT) represent the pillars of treatment even though guidelines in children are lacking. The Azithromycin thanks to its antinflammatory and direct antimicrobial effect could be a new strategy to prevent exacerbations.
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Affiliation(s)
- Marcella Gallucci
- Pediatric Unit, Department of Medical and Surgical Sciences, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 11, 40138, Bologna, Italy
| | - Emanuela di Palmo
- Pediatric Unit, Department of Medical and Surgical Sciences, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 11, 40138, Bologna, Italy
| | - Luca Bertelli
- Pediatric Unit, Department of Medical and Surgical Sciences, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 11, 40138, Bologna, Italy
| | - Federica Camela
- Pediatric Unit, Department of Medical and Surgical Sciences, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 11, 40138, Bologna, Italy
| | - Giampaolo Ricci
- Pediatric Unit, Department of Medical and Surgical Sciences, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 11, 40138, Bologna, Italy.
| | - Andrea Pession
- Pediatric Unit, Department of Medical and Surgical Sciences, S. Orsola - Malpighi Hospital, University of Bologna, Via Massarenti 11, 40138, Bologna, Italy
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Kantar A, Chang AB, Shields MD, Marchant JM, Grimwood K, Grigg J, Priftis KN, Cutrera R, Midulla F, Brand PLP, Everard ML. ERS statement on protracted bacterial bronchitis in children. Eur Respir J 2017; 50:50/2/1602139. [PMID: 28838975 DOI: 10.1183/13993003.02139-2016] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/01/2017] [Indexed: 12/22/2022]
Abstract
This European Respiratory Society statement provides a comprehensive overview on protracted bacterial bronchitis (PBB) in children. A task force of experts, consisting of clinicians from Europe and Australia who manage children with PBB determined the overall scope of this statement through consensus. Systematic reviews addressing key questions were undertaken, diagrams in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement constructed and findings of relevant studies summarised. The final content of this statement was agreed upon by all members.The current knowledge regarding PBB is presented, including the definition, microbiology data, known pathobiology, bronchoalveolar lavage findings and treatment strategies to manage these children. Evidence for the definition of PBB was sought specifically and presented. In addition, the task force identified several major clinical areas in PBB requiring further research, including collecting more prospective data to better identify the disease burden within the community, determining its natural history, a better understanding of the underlying disease mechanisms and how to optimise its treatment, with a particular requirement for randomised controlled trials to be conducted in primary care.
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Affiliation(s)
- Ahmad Kantar
- Pediatric Asthma and Cough Centre, Istituti Ospedalieri Bergamaschi, University and Research Hospitals, Bergamo, Italy .,Both authors contributed equally
| | - Anne B Chang
- Dept of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Australia.,Centre for Children's Health Research, Institute of Health & Biomedical Innovation, Queensland University of Technology, Brisbane, Australia.,Child Health Division, Menzies School of Health Research, Charles Darwin University, Casuarina, Australia.,Both authors contributed equally
| | - Mike D Shields
- Dept of Child Health, Queen's University Belfast, Belfast, UK
| | - Julie M Marchant
- Dept of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Australia.,Centre for Children's Health Research, Institute of Health & Biomedical Innovation, Queensland University of Technology, Brisbane, Australia
| | - Keith Grimwood
- Menzies Health Institute Queensland, Griffith University and Gold Coast Health, Gold Coast, Australia
| | - Jonathan Grigg
- Blizard Institute, Queen Mary University London, London, UK
| | - Kostas N Priftis
- Third Dept of Paediatrics, University General Hospital Attikon, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Renato Cutrera
- Respiratory Unit, University Dept of Pediatrics, Bambino Gesu' Children's Research Hospital, Rome, Italy
| | - Fabio Midulla
- Dept of Pediatrics and Infantile Neuropsychiatry, "Sapienza" University of Rome, Rome, Italy
| | - Paul L P Brand
- Isala Women and Children's Hospital, Zwolle, the Netherlands
| | - Mark L Everard
- School of Pediatrics and Child Health, University of Western Australia, Princess Margaret Hospital, Subiaco, Australia
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34
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Leconte S, Valentin S, Dromelet E, De Jonghe M. Prolonged Cough in Pediatric Population First Line Care, Belgian Guidelines. Open Respir Med J 2017; 11:54-66. [PMID: 29081858 PMCID: PMC5633727 DOI: 10.2174/1874306401711010054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/31/2017] [Accepted: 07/31/2017] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND The clinical approach to a prolonged cough, i.e. a cough lasting more than three weeks, is challenging for general practitioners as well for primary care pediatricians. What the recommended clinical approach in primary care is, how cough duration or cough characteristics impact the diagnosis, and what the efficiency and safety of antibiotics or symptomatic treatments are remain in question for primary care physicians. OBJECTIVE The last Belgian guidelines were published in 2006 and needed to be reviewed. Those background questions were used to conduct our guideline updating procedure. METHODS We systematically performed a pyramidal literature search between the periods 2006-2014 in order to write evidence based guidelines. The data of the literature was summarized, discussed by the authors, experts and the Belgian primary care guidelines committee. Recommendations were formulated and scored following the GRADE classification. RESULTS The consultation history as well as the physical examination should be directed towards searching for warning signs (GRADE 1B) and towards the common etiologies depending on cough duration (GRADE 2C). If the cough lasts for more than eight weeks, chest radiography and spirometry should be considered (GRADE 2C). An antibiotic is recommended for a prolonged wet cough (over eight weeks) if prolonged bacterial bronchitis is suspected (GRADE 1B). In the absence of clinical signs of a specific etiology of a cough, no drug can be recommended (GRADE 1B). For all cases, it is initially suggested to avoid irritants (GRADE 1C) as well as to take into account the concerns of parents and inform them about the natural development of a cough. CONCLUSIONS More research is needed to provide evidence on the clinical pathway on prolonged cough for primary care. Cough duration of more than eight weeks and prolonged wet cough are the most useful cough characteristics. Regarding a specific cough treatment, no medication has proved any effect greater than placebo. Attention to environmental triggers and patient-centered care remain the keystones of interventions.
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Affiliation(s)
- Sophie Leconte
- Centre académique de médecine générale, Université catholique de Louvain, Bruxelles, Belgium
- Institut de Recherche santé et société, Université catholique de Louvain, Bruxelles, Belgium
| | - Stéphanie Valentin
- Centre académique de médecine générale, Université catholique de Louvain, Bruxelles, Belgium
| | - Estelle Dromelet
- Centre académique de médecine générale, Université catholique de Louvain, Bruxelles, Belgium
| | - Michel De Jonghe
- Centre académique de médecine générale, Université catholique de Louvain, Bruxelles, Belgium
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Abstract
INTRODUCTION The prevalence and awareness of bronchiectasis not related to cystic fibrosis (CF) is increasing and it is now recognized as a major cause of respiratory morbidity, mortality and healthcare utilization worldwide. The need to elucidate the early origins of bronchiectasis is increasingly appreciated and has been identified as an important research priority. Current treatments for pediatric bronchiectasis are limited to antimicrobials, airway clearance techniques and vaccination. Several new drugs targeting airway inflammation are currently in development. Areas covered: Current management of pediatric bronchiectasis, including discussion on therapeutics, non-pharmacological interventions and preventative and surveillance strategies are covered in this review. We describe selected adult and pediatric data on bronchiectasis treatments and briefly discuss emerging therapeutics in the field. Expert commentary: Despite the burden of disease, the number of studies evaluating potential treatments for bronchiectasis in children is extremely low and substantially disproportionate to that for CF. Research into the interactions between early life respiratory tract infections and the developing immune system in children is likely to reveal risk factors for bronchiectasis development and inform future preventative and therapeutic strategies. Tailoring interventions to childhood bronchiectasis is imperative to halt the disease in its origins and improve adult outcomes.
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Affiliation(s)
- Danielle F Wurzel
- a The Royal Children's Hospital , Parkville , Australia.,b Murdoch Childrens Research Institute , Parkville , Australia
| | - Anne B Chang
- c Lady Cilento Children's Hospital , Queensland University of Technology , Brisbane , Australia.,d Menzies School of Health Research , Charles Darwin University , Darwin , Australia
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O'Grady KAF, Grimwood K, Toombs M, Sloots TP, Otim M, Whiley D, Anderson J, Rablin S, Torzillo PJ, Buntain H, Connor A, Adsett D, Meng kar O, Chang AB. Effectiveness of a cough management algorithm at the transitional phase from acute to chronic cough in Australian children aged <15 years: protocol for a randomised controlled trial. BMJ Open 2017; 7:e013796. [PMID: 28259853 PMCID: PMC5353349 DOI: 10.1136/bmjopen-2016-013796] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
INTRODUCTION Acute respiratory infections (ARIs) are leading causes of hospitalisation in Australian children and, if recurrent, are associated with increased risk of chronic pulmonary disorders later in life. Chronic (>4 weeks) cough in children following ARI is associated with decreased quality-of-life scores and increased health and societal economic costs. We will determine whether a validated evidence-based cough algorithm, initiated when chronic cough is first diagnosed after presentation with ARI, improves clinical outcomes in children compared with usual care. METHODS AND ANALYSIS A multicentre, parallel group, open-label, randomised controlled trial, nested within a prospective cohort study in Southeast Queensland, Australia, is underway. 750 children aged <15 years will be enrolled and followed weekly for 8 weeks after presenting with an ARI with cough. 214 children from this cohort with persistent cough at day 28 will be randomised to either early initiation of a cough management algorithm or usual care (107 per group). Randomisation is stratified by reason for presentation, site and total cough duration at day 28 (<6 and ≥6 weeks). Demographic details, risk factors, clinical histories, examination findings, cost-of-illness data, an anterior nasal swab and parent and child exhaled carbon monoxide levels (when age appropriate) are collected at enrolment. Weekly contacts will collect cough status and cost-of-illness data. Additional nasal swabs are collected at days 28 and 56. The primary outcome is time-to-cough resolution. Secondary outcomes include direct and indirect costs of illness and the predictors of chronic cough postpresentation. ETHICS AND DISSEMINATION The Children's Health Queensland (HREC/15/QRCH/15) and the Queensland University of Technology University (1500000132) Research Ethics Committees have approved the study. The study will inform best-practice management of cough in children. TRIAL REGISTRATION NUMBER ACTRN12615000132549.
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Affiliation(s)
- Kerry-Ann F O'Grady
- Centre for Children's Health Research, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Keith Grimwood
- Menzies Health Institute Queensland, Griffith University and Gold Coast Health, Southport, Queensland, Australia
| | - Maree Toombs
- The University of Queensland Rural Clinical School, The University of Queensland, Toowoomba, Queensland, Australia
- Carbal Health Services, Toowoomba, Queensland, Australia
- Menzies School of Health Research, Charles Darwin University, Casuarina, Northern Territory, Australia
| | - Theo P Sloots
- Queensland Paediatric Infectious Diseases Laboratory, Children's Health Queensland, Brisbane, Queensland, Australia
- Faculty of Medicine and Biomedical Sciences, The University of Queensland, Herston, Queensland, Australia
| | - Michael Otim
- School of Public Health, Australian Catholic University, Sydney, New South Wales, Australia
| | - David Whiley
- Faculty of Medicine and Biomedical Sciences, The University of Queensland, Herston, Queensland, Australia
| | - Jennie Anderson
- Caboolture Community Medical, Caboolture, Queensland, Australia
| | - Sheree Rablin
- Centre for Children's Health Research, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Paul J Torzillo
- School of Medicine, The University of Sydney, Newtown, New South Wales, Australia
| | - Helen Buntain
- Wesley Medical Centre, Brisbane, Queensland, Australia
| | - Anne Connor
- Ferny Grove Chambers Medical Practice, Brisbane, Queensland, Australia
| | - Don Adsett
- Department of Paediatrics, Toowoomba Hospital, Toowoomba, Queensland, Australia
| | - Oon Meng kar
- Department of Paediatrics, Toowoomba Hospital, Toowoomba, Queensland, Australia
| | - Anne B Chang
- Centre for Children's Health Research, Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia
- Menzies School of Health Research, Charles Darwin University, Casuarina, Northern Territory, Australia
- Queensland Children's Respiratory Centre, Lady Cilento Children's Hospital, Brisbane, Queensland, Australia
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Ishak A, Everard ML. Persistent and Recurrent Bacterial Bronchitis-A Paradigm Shift in Our Understanding of Chronic Respiratory Disease. Front Pediatr 2017; 5:19. [PMID: 28261574 PMCID: PMC5309219 DOI: 10.3389/fped.2017.00019] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 01/24/2017] [Indexed: 02/01/2023] Open
Abstract
The recent recognition that the conducting airways are not "sterile" and that they have their own dynamic microbiome, together with the rapid advances in our understanding of microbial biofilms and their roles in the causation of respiratory diseases (such as chronic bronchitis, sinusitis, and chronic otitis media), permit us to update the "vicious circle" hypothesis of the causation of bronchiectasis. This proposes that chronic inflammation driven by persistent bacterial bronchitis (PBB) causes damage to both the epithelium, resulting in impaired mucociliary clearance, and to the airway wall, which eventually manifests as bronchiectasis. The link between a "chronic bronchitis" and a persistence of bacterial pathogens, such as non-typable Haemophilus influenzae, was first made more than 100 years ago, and its probable role in the causation of bronchiectasis was proposed soon afterward. The recognition that the "usual suspects" are adept at forming biofilms and hence are able to persist and dominate the normal dynamically changing "healthy microbiome" of the conducting airways provides an explanation for the chronic colonization of the bronchi and for the associated chronic neutrophil-dominated inflammation characteristic of a PBB. Understanding the complex interaction between the host and the microbial communities of the conducting airways in health and disease will be a key component in optimizing pulmonary health in the future.
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Affiliation(s)
- Alya Ishak
- Department of Respiratory Medicine, Princess Margaret Hospital, Subiaco, WA, Australia
| | - Mark L. Everard
- Department of Respiratory Medicine, Princess Margaret Hospital, Subiaco, WA, Australia
- University of Western Australia, Crawley, WA, Australia
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Eg KP, Mirra V, Chang AB, Santamaria F. Editorial: Chronic Suppurative Lung Disease and Bronchiectasis in Children and Adolescents. Front Pediatr 2017; 5:196. [PMID: 28929095 PMCID: PMC5591788 DOI: 10.3389/fped.2017.00196] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 08/23/2017] [Indexed: 12/19/2022] Open
Affiliation(s)
- Kah Peng Eg
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children's Centre for Health Research, Queensland University of Technology, Brisbane, QLD, Australia.,Department of Pediatrics, University of Malaya, Kuala Lumpur, Malaysia
| | - Virginia Mirra
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Anne B Chang
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Children's Centre for Health Research, Queensland University of Technology, Brisbane, QLD, Australia.,Child Health Division, Menzies School of Health Research, Charles Darwin University, NT, Australia
| | - Francesca Santamaria
- Department of Translational Medical Sciences, Federico II University, Naples, Italy
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Paediatric chronic suppurative lung disease: clinical characteristics and outcomes. Eur J Pediatr 2016; 175:1077-84. [PMID: 27287408 DOI: 10.1007/s00431-016-2743-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 05/26/2016] [Accepted: 06/07/2016] [Indexed: 01/09/2023]
Abstract
UNLABELLED We describe the clinical, bronchoscopic, bronchoalveolar lavage (BAL) and radiographic characteristics of children whose chronic wet cough did not resolve with oral antibiotics and which led to their hospitalisation for intravenous antibiotics and airway clearance therapy. Between 2010 and 2014, medical chart review identified 22 such children. Their median cough duration was 26 weeks (interquartile range (IQR) 13-52). All received oral antibiotics immediately before their hospitalisation (median 4 weeks; IQR 4-6.5). On chest examination, seven (31 %) children had auscultatory crackles. At bronchoscopy, 9 (41 %) had tracheomalacia, 18 (86 %) demonstrated airway neutrophilia (>15 %) and 12 (57 %) grew Haemophilus influenzae from their BAL fluid. They received intravenous antibiotics (mostly cefotaxime or ceftriaxone) and airway clearance therapy as inpatients (median 12.5 days (IQR 10.8-14). All were cough-free at follow-up. CONCLUSION The children's BAL characteristics are similar to those with protracted bacterial bronchitis and bronchiectasis, but their poor clinical response to oral antibiotics and non-specific chest CT findings differentiated them from these other two disorders. The findings are consistent with chronic suppurative lung disease. Intravenous antibiotics and airway clearance therapy should therefore be considered in children whose wet cough persists despite 4 weeks of oral antibiotics and where other causes of chronic wet cough are absent. What is known on this topic? • Chronic wet cough not resolving with appropriate antibiotics increases the likelihood of bronchiectasis. • Children with chronic suppurative lung disease (CSLD) have clinical features of bronchiectasis, but lack the radiographic evidence for this diagnosis. WHAT THIS STUDY ADDS • Children with CSLD have airway neutrophilia and predominantly Haemophilus influenzae in lower airway cultures, similar to children with protracted bacterial bronchitis and bronchiectasis. • Chronic wet cough in CSLD, unresponsive to oral antibiotics, resolves with intravenous antibiotics and airway clearance therapy.
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Takahashi Y, Matsuda M, Aoki S, Dejima H, Nakayama T, Matsutani N, Kawamura M. Qualitative Analysis of Preoperative High-Resolution Computed Tomography: Risk Factors for Pulmonary Complications After Major Lung Resection. Ann Thorac Surg 2016; 101:1068-74. [DOI: 10.1016/j.athoracsur.2015.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 08/21/2015] [Accepted: 09/08/2015] [Indexed: 11/24/2022]
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Chang AB, Upham JW, Masters IB, Redding GR, Gibson PG, Marchant JM, Grimwood K. Protracted bacterial bronchitis: The last decade and the road ahead. Pediatr Pulmonol 2016; 51:225-42. [PMID: 26636654 PMCID: PMC7167774 DOI: 10.1002/ppul.23351] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/04/2015] [Accepted: 10/26/2015] [Indexed: 01/27/2023]
Abstract
Cough is the single most common reason for primary care physician visits and, when chronic, a frequent indication for specialist referrals. In children, a chronic cough (>4 weeks) is associated with increased morbidity and reduced quality of life. One common cause of childhood chronic cough is protracted bacterial bronchitis (PBB), especially in children aged <6 years. PBB is characterized by a chronic wet or productive cough without signs of an alternative cause and responds to 2 weeks of appropriate antibiotics, such as amoxicillin-clavulanate. Most children with PBB are unable to expectorate sputum. If bronchoscopy and bronchoalveolar lavage are performed, evidence of bronchitis and purulent endobronchial secretions are seen. Bronchoalveolar lavage specimens typically reveal marked neutrophil infiltration and culture large numbers of respiratory bacterial pathogens, especially Haemophilus influenzae. Although regarded as having a good prognosis, recurrences are common and if these are frequent or do not respond to antibiotic treatments of up to 4-weeks duration, the child should be investigated for other causes of chronic wet cough, such as bronchiectasis. The contribution of airway malacia and pathobiologic mechanisms of PBB remain uncertain and, other than reduced alveolar phagocytosis, evidence of systemic, or local immune deficiency is lacking. Instead, pulmonary defenses show activated innate immunity and increased gene expression of the interleukin-1β signalling pathway. Whether these changes in local inflammatory responses are cause or effect remains to be determined. It is likely that PBB and bronchiectasis are at the opposite ends of the same disease spectrum, so children with chronic wet cough require close monitoring.
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Affiliation(s)
- Anne B Chang
- Child Health Division, Menzies School of Health Research, Darwin, Northern Territory, Australia
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Queensland, Australia
- Queensland Children's Medical Research Institute, Queensland University of Technology, Brisbane, Australia
| | - John W Upham
- School of Medicine, University of Queensland, Brisbane, Australia
| | - I Brent Masters
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Queensland, Australia
- Queensland Children's Medical Research Institute, Queensland University of Technology, Brisbane, Australia
| | | | - Peter G Gibson
- Priority Research Centre for Asthma and Respiratory Diseases, University of Newcastle, Callaghan, New South Wales, Australia
- Department of Respiratory and Sleep Medicine, Hunter Medical Research Institute, John Hunter Hospital, New Lambton Heights, New South Wales, Australia
| | - Julie M Marchant
- Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Brisbane, Queensland, Australia
- Queensland Children's Medical Research Institute, Queensland University of Technology, Brisbane, Australia
| | - Keith Grimwood
- Queensland Children's Medical Research Institute, Children's Health Queensland, Brisbane, Queensland, Australia
- Menzies Health Institute Queensland, Griffith University and Gold Coast Health, Gold Coast, Queensland, Australia
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Ween M, Ahern J, Carroll A, Hodge G, Pizzutto S, Jersmann H, Reynolds P, Hodge S. A small volume technique to examine and compare alveolar macrophage phagocytosis of apoptotic cells and non typeable Haemophilus influenzae (NTHi). J Immunol Methods 2016; 429:7-14. [DOI: 10.1016/j.jim.2015.12.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 12/07/2015] [Accepted: 12/07/2015] [Indexed: 12/11/2022]
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Chang AB, Oppenheimer JJ, Weinberger M, Rubin BK, Irwin RS. Children With Chronic Wet or Productive Cough--Treatment and Investigations: A Systematic Review. Chest 2016; 149:120-42. [PMID: 26757284 DOI: 10.1378/chest.15-2065] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 10/14/2015] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Systematic reviews were conducted to examine two related key questions (KQs) in children with chronic (> 4 weeks' duration) wet or productive cough not related to bronchiectasis: KQ1-How effective are antibiotics in improving the resolution of cough? If so, what antibiotic should be used and for how long? KQ2-When should they be referred for further investigations? METHODS The systematic reviews were undertaken based on the protocol established by selected members of the CHEST expert cough panel. Two authors screened searches and selected and extracted data. The study included systematic reviews, randomized controlled trials (RCTs), cohort (prospective and retrospective) studies, and cross-sectional studies published in English. RESULTS Data were presented in Preferred Reporting Items for Systematic Reviews and Meta-Analyses flowcharts, and the summaries were tabulated. Fifteen studies were included in KQ1 (three systematic reviews, three RCTs, five prospective studies, and four retrospective studies) and 17 in KQ2 (one RCT, 11 prospective studies, and five retrospective studies). Combining data from the RCTs (KQ1), the number needed to treat for benefit was 3 (95% CI, 2.0-4.3) in achieving cough resolution. In general, findings from prospective and retrospective studies were consistent, but there were minor variations. CONCLUSIONS There is high-quality evidence that in children aged ≤ 14 years with chronic (> 4 weeks' duration) wet or productive cough, the use of appropriate antibiotics improves cough resolution. There is also high-quality evidence that when specific cough pointers (eg, digital clubbing) are present in children with wet cough, further investigations (eg, flexible bronchoscopy, chest CT scans, immunity tests) should be conducted. When the wet cough does not improve by 4 weeks of antibiotic treatment, there is moderate-quality evidence that children should be referred to a major center for further investigations to determine whether an underlying lung or other disease is present.
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Affiliation(s)
- Anne B Chang
- Child Health Division, Menzies School of Health Research, Darwin, Australia; Department of Respiratory and Sleep Medicine, Lady Cilento Children's Hospital, Queensland Uni of Technology, Children's Health Queensland, Queensland, Australia.
| | - John J Oppenheimer
- New Jersey Medical School, Pulmonary and Allergy Associates, Morristown, NJ
| | - Miles Weinberger
- Pediatric Allergy, Immunology, and Pulmonology Division, University of Iowa Children's Hospital, Iowa City, IA
| | - Bruce K Rubin
- Children's Hospital of Richmond at Virginia Commonwealth University, Richmond, VA
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Johnson LR, Johnson EG, Vernau W, Kass PH, Byrne BA. Bronchoscopy, Imaging, and Concurrent Diseases in Dogs with Bronchiectasis: (2003-2014). J Vet Intern Med 2015; 30:247-54. [PMID: 26682874 PMCID: PMC4913641 DOI: 10.1111/jvim.13809] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 10/18/2015] [Accepted: 11/11/2015] [Indexed: 12/16/2022] Open
Abstract
Background Bronchiectasis is a permanent and debilitating sequel to chronic or severe airway injury, however, diseases associated with this condition are poorly defined. Objective To evaluate results of diagnostic tests used to document bronchiectasis and to characterize underlying or concurrent disease processes. Animals Eighty‐six dogs that had bronchoscopy performed and a diagnosis of bronchiectasis. Methods Retrospective case series. Radiographs, computed tomography, and bronchoscopic findings were evaluated for features of bronchiectasis. Clinical diagnoses of pneumonia (aspiration, interstitial, foreign body, other), eosinophilic bronchopneumopathy (EBP), and inflammatory airway disease (IAD) were made based on results of history, physical examination, and diagnostic testing, including bronchoalveolar lavage fluid analysis and microbiology. Results Bronchiectasis was diagnosed in 14% of dogs (86/621) that had bronchoscopy performed. Dogs ranged in age from 0.5 to 14 years with duration of signs from 3 days to 10 years. Bronchiectasis was documented during bronchoscopy in 79/86 dogs (92%), thoracic radiology in 50/83 dogs (60%), and CT in 34/34 dogs (100%). Concurrent airway collapse was detected during bronchoscopy in 50/86 dogs (58%), and focal or multifocal mucus plugging of segmental or subsegmental bronchi was found in 41/86 dogs (48%). Final diagnoses included pneumonia (45/86 dogs, 52%), EBP (10/86 dogs, 12%) and IAD (31/86 dogs, 36%). Bacteria were isolated in 24/86 cases (28%), with Streptococcus spp, Pasteurella spp, enteric organisms, and Stenotrophomonas isolated most frequently. Conclusions and Clinical Importance Bronchiectasis can be anticipated in dogs with infectious or inflammatory respiratory disease. Advanced imaging and bronchoscopy are useful in making the diagnosis and identifying concurrent respiratory disease.
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Affiliation(s)
- L R Johnson
- Department of Medicine and Epidemiology, University of California, Davis, Davis, CA
| | - E G Johnson
- Department of Surgical and Radiological Science, University of California, Davis, Davis, CA
| | - W Vernau
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, CA
| | - P H Kass
- Department of Population Health and Reproduction, University of California, Davis, Davis, CA
| | - B A Byrne
- Department of Pathology, Microbiology, and Immunology, University of California, Davis, Davis, CA
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Abstract
Despite the high prevalence of cough in children, the topic has been poorly researched. Although pediatricians recognize that chronic cough in children is different from that in adults, this difference seems less recognizable to other health professionals. During childhood, the respiratory tract and nervous system undergo a series of anatomical and physiological maturation processes that influence the cough reflex. Additionally, immunological responses undergo developmental and memorial processes that make infection and congenital abnormalities the overwhelming cause of cough in children. The lack of comprehensive clinical data regarding chronic cough in children has initially required pediatricians to adopt an adult approach to the problem. In the last 10 years, however, research has led to the reconsideration of the etiology of chronic cough in children. Currently, attention has focused on protracted bacterial bronchitis as a major cause of chronic cough in preschool-aged children and as a possible precursor of bronchiectasis. New research horizons are emerging for both the treatment and prevention of particular causes of chronic cough in children.
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Affiliation(s)
- Ahmad Kantar
- Pediatric Asthma and Cough Centre, Istituti Ospedalieri Bergamaschi, University and Research Hospitals, via Forlanini 15, Ponte San Pietro-Bergamo, 24036, Bergamo, Italy.
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Wang Y, Hao C, Chi F, Yu X, Sun H, Huang L, Wang M, Ji W, Yan Y, Zhu H, Shao X. Clinical characteristics of protracted bacterial bronchitis in Chinese infants. Sci Rep 2015; 5:13731. [PMID: 26338462 PMCID: PMC4559899 DOI: 10.1038/srep13731] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 08/04/2015] [Indexed: 12/19/2022] Open
Abstract
Protracted bacterial bronchitis (PBB) is the common cause of chronic cough in children worldwide, but its etiology has not been fully recognized in China. We retrospectively investigated a total of 66 hospitalized infants under the age of three years with chronic wet cough enrolled in the Affiliated Children's Hospital of Soochow University from October 2010 to March 2014. All patients underwent bronchoscopy and broncho-alveolar lavage (BAL) samples were processed for microbiological and cytological analysis. Of 66 patients with wet cough, 50 (75.8%) were diagnosed with PBB. In the PBB group, wet cough was accompanied by wheezing (90%). Airway malacia were identified in 22 cases (44%). The clinical manifestations of PBB with airway malacia did not differ from those without malacia. Haemophilus influenzae (47.4%) and Streptococcus pneumoniae (36.8%) were the most commonly identified pathogens. Furthermore, CD3(+) and CD3(+)CD4(+) cells were significantly lower in the PBB group (p < 0.01), while CD19(+), CD16(+)CD56(+) and CD23(+) cells were elevated (p < 0.01) in the PBB group. Our study revealed PBB is an important cause of chronic wet cough in Chinese infants, and that changes of lymphocyte subsets are observed in children with PBB. Airway malacia frequently co-existed with PBB, but did not exacerbate the disease.
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Affiliation(s)
- Yuqing Wang
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Chuangli Hao
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - FanFan Chi
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Xingmei Yu
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Huiquan Sun
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Li Huang
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Meijuan Wang
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Wei Ji
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Yongdong Yan
- Department of Respiratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Hong Zhu
- Department of Laboratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
| | - Xuejun Shao
- Department of Laboratory Medicine, The Affiliated Children's Hospital, Soochow University, Jingde Road No. 303, Suzhou 215003, China
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High Pulmonary Levels of IL-6 and IL-1β in Children with Chronic Suppurative Lung Disease Are Associated with Low Systemic IFN-γ Production in Response to Non-Typeable Haemophilus influenzae. PLoS One 2015; 10:e0129517. [PMID: 26066058 PMCID: PMC4466570 DOI: 10.1371/journal.pone.0129517] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Accepted: 05/08/2015] [Indexed: 11/22/2022] Open
Abstract
Non-typeable Haemophilus influenzae (NTHi) is commonly associated with chronic suppurative lung disease in children. We have previously shown that children with chronic suppurative lung disease have a reduced capacity to produce IFN-γ in response to NTHi compared with healthy control children. The aim of this study was to determine if deficient NTHi-specific IFN-γ production is associated with heightened systemic or airway inflammation. We measured a panel of cytokines (IFN-γ, IL-1β, IL-6, IL-8, IL-12 p70), antimicrobial proteins (LL-37, IP-10) as well as cellular and clinical factors associated with airway and systemic inflammation in 70 children with chronic suppurative lung disease. IFN-γ was measured in peripheral blood mononuclear cells challenged in vitro with live NTHi. Regression analysis was used to assess the association between the systemic and airway inflammation and the capacity to produce IFN-γ. On multivariate regression, NTHi-specific IFN-γ production was significantly negatively associated with the BAL concentrations of the inflammatory cytokines IL-6 (β=-0.316; 95%CI -0.49, -0.14; p=0.001) and IL-1β (β=-0.023; 95%CI -0.04, -0.01; p=0.001). This association was independent of bacterial or viral infection, BAL cellularity and the severity of bronchiectasis (using modified Bhalla score on chest CT scans). We found limited evidence of systemic inflammation in children with chronic suppurative lung disease. In summary, increased local airway inflammation is associated with a poorer systemic cell-mediated immune response to NTHi in children with chronic suppurative lung disease. These data support the emerging body of evidence that impaired cell-mediated immune responses and dysregulated airway inflammation may be linked and contribute to the pathobiology of chronic suppurative lung disease.
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Zacharasiewicz A, Eber E, Riedler J, Frischer T. Evaluation und Therapie des chronischen Hustens bei Kindern. Monatsschr Kinderheilkd 2015. [DOI: 10.1007/s00112-014-3305-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Chang AB, Brown N, Toombs M, Marsh RL, Redding GJ. Lung disease in indigenous children. Paediatr Respir Rev 2014; 15:325-32. [PMID: 24958089 DOI: 10.1016/j.prrv.2014.04.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 04/29/2014] [Indexed: 12/20/2022]
Abstract
Children in indigenous populations have substantially higher respiratory morbidity than non-indigenous children. Indigenous children have more frequent respiratory infections that are, more severe and, associated with long-term sequelae. Post-infectious sequelae such as chronic suppurative lung disease and bronchiectasis are especially prevalent among indigenous groups and have lifelong impact on lung function. Also, although estimates of asthma prevalence among indigenous children are similar to non-indigenous groups the morbidity of asthma is higher in indigenous children. To reduce the morbidity of respiratory illness, best-practice medicine is essential in addition to improving socio-economic factors, (eg household crowding), tobacco smoke exposure, and access to health care and illness prevention programs that likely contribute to these issues. Although each indigenous group may have unique health beliefs and interfaces with modern health care, a culturally sensitive and community-based comprehensive care system of preventive and long term care can improve outcomes for all these conditions. This article focuses on common respiratory conditions encountered by indigenous children living in affluent countries where data is available.
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Affiliation(s)
- A B Chang
- Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Brisbane, Australia; Queensland Respiratory Centre, Royal Children's Hospital, Brisbane, Queensland Medical Research Institute, Queensland University of Technology, Brisbane, Australia.
| | - N Brown
- National Aboriginal Community Controlled Health Organisation and University of Wollongong, Wollongong, New South Wales, Australia
| | - M Toombs
- Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Brisbane, Australia; Indigenous Health, Toowoomba Rural Clinical School, University of Queensland
| | - R L Marsh
- Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, Brisbane, Australia
| | - G J Redding
- University of Washington School of Medicine, Pediatric Pulmonary Division, Children's Hospital and Regional Medical Center, Seattle, Washington, USA
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Wurzel DF, Marchant JM, Yerkovich ST, Upham JW, Mackay IM, Masters IB, Chang AB. Prospective characterization of protracted bacterial bronchitis in children. Chest 2014; 145:1271-1278. [PMID: 24435356 PMCID: PMC7173205 DOI: 10.1378/chest.13-2442] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Prior studies on protracted bacterial bronchitis (PBB) in children have been retrospective or based on small cohorts. As PBB shares common features with other pediatric conditions, further characterization is needed to improve diagnostic accuracy among clinicians. In this study, we aim to further delineate the clinical and laboratory features of PBB in a larger cohort, with a specific focus on concurrent viral detection. METHODS Children with and without PBB (control subjects) undergoing flexible bronchoscopy were prospectively recruited. Basic immune function testing and lymphocyte subset analyses were performed. BAL specimens were processed for cellularity and microbiology. Viruses were identified using polymerase chain reaction (PCR) and bacteria were identified via culture. RESULTS The median age of the 104 children (69% male) with PBB was 19 months (interquartile range [IQR], 12-30 mo). Compared with control subjects, children with PBB were more likely to have attended childcare (OR, 8.43; 95% CI, 2.34-30.46). High rates of wheeze were present in both groups, and tracheobronchomalacia was common. Children with PBB had significantly elevated percentages of neutrophils in the lower airways compared with control subjects, and adenovirus was more likely to be detected in BAL specimens in those with PBB (OR, 6.69; 95% CI, 1.50-29.80). Median CD56 and CD16 natural killer (NK) cell levels in blood were elevated for age in children with PBB (0.7 × 109/L; IQR, 0.5-0.9 cells/L). CONCLUSIONS Children with PBB are, typically, very young boys with prolonged wet cough and parent-reported wheeze who have attended childcare. Coupled with elevated NK-cell levels, the association between adenovirus and PBB suggests a likely role of viruses in PBB pathogenesis.
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Affiliation(s)
- Danielle F Wurzel
- Queensland Children's Medical Research Institute, The University of Queensland, and Queensland Children's Respiratory Centre, Royal Children's Hospital, Brisbane, QLD.
| | - Julie M Marchant
- Queensland Children's Medical Research Institute, The University of Queensland, and Queensland Children's Respiratory Centre, Royal Children's Hospital, Brisbane, QLD
| | - Stephanie T Yerkovich
- School of Medicine, The University of Queensland, Brisbane, QLD; Queensland Lung Transplant Service, The Prince Charles Hospital, Brisbane, QLD
| | - John W Upham
- School of Medicine, The University of Queensland, Brisbane, QLD; Department of Respiratory Medicine, Princess Alexandra Hospital, Brisbane, QLD
| | - Ian M Mackay
- Queensland Paediatric, Infectious Diseases Laboratory, Queensland Children's Medical Research Institute, Sir Albert, Sakzewski Virus Research Centre, Children's Health Queensland Hospital and Health Service, The University of Queensland, Herston, QLD
| | - I Brent Masters
- Queensland Children's Medical Research Institute, The University of Queensland, and Queensland Children's Respiratory Centre, Royal Children's Hospital, Brisbane, QLD
| | - Anne B Chang
- Queensland Children's Medical Research Institute, The University of Queensland, and Queensland Children's Respiratory Centre, Royal Children's Hospital, Brisbane, QLD; Child Health Division, Menzies School of Health Research, Charles Darwin University, Darwin, NT, Australia
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