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Teague WG, Lawrence MG, Williams S, Garrod AS, Froh D, Early SV, Brand W, Middleton JP, Mendoza MV, Hollis KA, Wavell K, Heymann PW, Steinke JW, Borish L. Novel Treatment-Refractory Preschool Wheeze Phenotypes Identified by Cluster Analysis of Lung Lavage Constituents. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2021; 9:2792-2801.e4. [PMID: 33905917 DOI: 10.1016/j.jaip.2021.03.059] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 02/25/2021] [Accepted: 03/24/2021] [Indexed: 01/28/2023]
Abstract
BACKGROUND Preschool children with treatment-refractory wheeze often require unscheduled acute care. Current guidelines advise treatment of persistent wheeze with inhaled corticosteroids. Alternative treatments targeting structural abnormalities and specific inflammatory patterns could be more effective. OBJECTIVE To apply unsupervised analysis of lung lavage (bronchoalveolar lavage [BAL]) variables to identify clusters of preschool children with treatment-refractory wheeze. METHODS A total of 155 children 6 years or younger underwent bronchoscopy with BAL for evaluation of airway structure, inflammatory markers, and pathogens. Variables were screened with factor analysis and sorted into clusters by Ward's method, and membership was confirmed by discriminant analysis. RESULTS The model was repeatable in a 48-case validation sample and accurately classified 86% of cases. Cluster 1 (n = 60) had early-onset wheeze, 85% with structural abnormalities, mostly tracheamalacia, with low total IgE and agranulocytic BAL. Cluster 2 (n = 42) had later-onset wheeze, the highest prevalence of gastroesophageal reflux, little atopy, and two-third had increased BAL lipid-laden macrophages. Cluster 3 (n = 46) had mid-onset wheeze, low total IgE, and two-third had BAL viral transcripts, predominately human rhinovirus, with BAL neutrophilia. Cluster 4 (n = 7) was older, with high total IgE, blood eosinophilia, and mixed BAL eosinophils and neutrophils. CONCLUSIONS Preschool children with recurrent wheeze refractory to inhaled corticosteroid treatment include 4 clusters: airway malacia, gastroesophageal reflux, indolent human rhinovirus bronchoalveolitis, and type-2high inflammation. The results support the risk and cost of invasive bronchoscopy to diagnose causes of treatment-refractory wheeze and develop novel therapies targeting airway malacia, human rhinovirus infection, and BAL neutrophilia in preschool children.
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Affiliation(s)
- W Gerald Teague
- Child Health Research Center, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va; Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va.
| | - Monica G Lawrence
- Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va; Division of Allergy, Asthma, and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Va
| | - Sanford Williams
- Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va; Division of Allergy, Asthma, and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Va
| | - Andrea S Garrod
- Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va
| | - Deborah Froh
- Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va
| | - Stephen V Early
- Department of Otolaryngology, Head and Neck Surgery, University of Virginia School of Medicine, Charlottesville, Va
| | - William Brand
- Department of Otolaryngology, Head and Neck Surgery, University of Virginia School of Medicine, Charlottesville, Va
| | - Jeremy P Middleton
- Division of Gastroenterology and Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va
| | - Michael V Mendoza
- Division of Gastroenterology and Hepatology, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va
| | - Kerry A Hollis
- Department of Respiratory Therapy and Sleep Technology, University of Virginia Medical Center, Charlottesville, Va
| | - Kristin Wavell
- Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va; Division of Allergy, Asthma, and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Va
| | - Peter W Heymann
- Child Health Research Center, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va; Division of Respiratory Medicine, Allergy, Immunology, and Sleep, Department of Pediatrics, University of Virginia School of Medicine, Charlottesville, Va
| | - John W Steinke
- Division of Allergy, Asthma, and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Va
| | - Larry Borish
- Division of Allergy, Asthma, and Immunology, Department of Medicine, University of Virginia School of Medicine, Charlottesville, Va; Department of Microbiology, University of Virginia School of Medicine, Charlottesville, Va
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Wallis C, McLaren CA. Tracheobronchial stenting for airway malacia. Paediatr Respir Rev 2018; 27:48-59. [PMID: 29174374 DOI: 10.1016/j.prrv.2017.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 09/28/2017] [Indexed: 11/28/2022]
Abstract
Tracheobronchomalacia is a rare but clinically troublesome condition in paediatrics. The softening of the major airways - which can include some or all of the tracheobronchial tree can lead to symptoms ranging from the minor (harsh barking cough, recurrent chest infections) to severe respiratory difficulties including prolonged ventilator support and 'near death attacks'. The causes are broadly divided into intrinsic softening of the airway wall which is considered a primary defect (e.g. syndromes; post tracheo-oesophageal fistula repair; extreme prematurity) or secondary malacia due to external compression from vascular structures or cardiac components. These secondary changes can persist even when the external compression is relieved, for example, following the repair of a pulmonary artery sling or double aortic arch. For children with severe clinical symptoms attributed to malacia, consideration is given to possible surgical remedies such as an aortopexy for short limited areas of malacia, or long term positive pressure support with CPAP either by non invasive or tracheostomy interface. More recently the role of stenting in children is receiving attention, especially with the development of newer techniques such as bioabsorbable stents which buy time for a natural history of improvement in the malacia to occur. This paper reviews the stents available and discusses the pros and cons of stenting in paediatric airway malacia.
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Affiliation(s)
- Colin Wallis
- Department of Respiratory Paediatrics, Great Ormond Street Hospital for Children, London, UK.
| | - Clare A McLaren
- Department of Radiology, Great Ormond Street Hospital for Children, London, UK
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Khaleghnejad A, Sadr S, Tabatabaei SA, Farahbakhsh N, Dabirmoghaddam P, Mansori SS. Laryngotracheoesophageal Cleft Type 3 and Severe Laryngotracheomalacia; Delayed Surgical Repair, a Treatment Challenge with an Excellent Outcome. Respir Med Case Rep 2017; 23:26-28. [PMID: 29201636 PMCID: PMC5699882 DOI: 10.1016/j.rmcr.2017.10.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 10/18/2017] [Accepted: 10/25/2017] [Indexed: 11/26/2022] Open
Abstract
Laryngotracheoesophageal clefts (LTEC) are rare malformations which involve the upper respiratory and digestive tract. Surgical repair should be undertaken promptly to maintain a secure airway and prevent serious pulmonary aspiration. This paper reports the first case of LTEC type 3 with severe laryngotracheomalacia that was brought to Mofid children's hospital in late infancy with a poor health status. Delayed defect correction was our team strategy for the patient when she had achieved good weight gain. At the age of 22 months in collaboration with the pediatric surgical and otolaryngologist team, the repair of the laryngeal cleft was done with lateral open approach method. She was discharged with tracheostomy and gastrostomy. In the next six months follow up after the surgery tracheostomy decannulation and gastrostomy tube removal were done and the infant is now in regular follow-up.
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Affiliation(s)
- Ahmad Khaleghnejad
- Pediatric Surgery Research Center, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Saeed Sadr
- Department of Pulmonology, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyyed Ahmad Tabatabaei
- Department of Pulmonology, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nazanin Farahbakhsh
- Department of Pulmonology, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Saeed Saadat Mansori
- Department of Pulmonology, Mofid Children's Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Leishman C, Monnier P, Jaquet Y. Endoscopic repair of laryngotracheoesophageal clefts: experience in 17 cases. Int J Pediatr Otorhinolaryngol 2014; 78:227-31. [PMID: 24332198 DOI: 10.1016/j.ijporl.2013.10.068] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To review the presentation and evaluation of laryngotracheoesophageal clefts as well as their treatment modalities, especially endoscopic closure. STUDY DESIGN retrospective case series. METHODS All patients treated for laryngotracheoesophageal clefts in our clinic during the last 15 years were included. Analysis of preoperative data, surgical success and functional outcome was performed. RESULTS A total of 18 patients were included in our study. Cleft distribution was: type I (n=1), type II (n=3), type IIIa (n=5), type IIIb (n=8) and type IVa (n=1). All clefts were closed endoscopically by CO2 laser repair except for two patients who benfited from open surgery (one type I, one type IIIb). 7 of our 18 patients (39%) experienced a complication necessitating reoperation. Surgical treatment of LTEC allowed cessation of feeding tube assistance and artificial ventilation in 47% and 42% of patients respectively. CONCLUSION Surgical treatement of laryngotracheoesophageal clefts remains a complex procedure with a high rate of morbidity for high grade clefts. Post-surgical difficulties in feeding and breathing are associated with concomitant congenital anomalies. Endoscopic repair is a successful technique for treating up to grade IIIa laryngeal clefts. Further investigation is needed to assess the best approach for treating longer clefts.
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Affiliation(s)
- Crispin Leishman
- Clinic of Otorhinolaryngology and Head and Neck Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland.
| | - Philippe Monnier
- Clinic of Otorhinolaryngology and Head and Neck Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Yves Jaquet
- Clinic of Otorhinolaryngology and Head and Neck Surgery, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
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Leboulanger N, Garabédian EN. Laryngo-tracheo-oesophageal clefts. Orphanet J Rare Dis 2011; 6:81. [PMID: 22151899 PMCID: PMC3261097 DOI: 10.1186/1750-1172-6-81] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2010] [Accepted: 12/07/2011] [Indexed: 01/09/2023] Open
Abstract
A laryngo-tracheo-esophageal cleft (LC) is a congenital malformation characterized by an abnormal, posterior, sagittal communication between the larynx and the pharynx, possibly extending downward between the trachea and the esophagus. The estimated annual incidence of LC is 1/10,000 to 1/20,000 live births, accounting for 0.2% to 1.5% of congenital malformations of the larynx. These incidence rates may however be underestimated due to difficulty in diagnosing minor forms and a high mortality rate in severe forms. A slightly higher incidence has been reported in boys than in girls. No specific geographic distribution has been found. Depending on the severity of the malformation, patients may present with stridor, hoarse cry, swallowing difficulties, aspirations, cough, dyspnea and cyanosis through to early respiratory distress. Five types of laryngo-tracheo-esophageal cleft have been described based on the downward extension of the cleft, which typically correlates with the severity of symptoms: Type 0 laryngo-tracheo-esophageal cleft to Type 4 laryngo-tracheo-esophageal cleft. LC is often associated with other congenital abnormalities/anomalies (16% to 68%), mainly involving the gastro-intestinal tract, which include laryngomalacia, tracheo-bronchial dyskinesia, tracheo-bronchomalacia (mostly in types 3 and 4), and gastro-esophageal reflux disease (GERD). The syndromes most frequently associated with an LC are Opitz/BBB syndrome, Pallister Hall syndrome, VACTERL/VATER association, and CHARGE syndrome. Laryngeal clefts result from failure of fusion of the posterior cricoid lamina and abnormal development of the tracheo-esophageal septum. The causes of the embryological developmental anomalies leading to LC are not known but are thought to be multifactorial. LC appears to be mostly sporadic although some familial cases with suspected autosomal dominant transmission have been reported. The age of diagnosis depends mainly on the severity of the clinical symptoms and therefore on the extent of the LC. Diagnosis is made either based on clinical manifestations or on investigations, such as endoscopy, X-ray, CT scan, performed for other conditions. Differential diagnoses include tracheo-bronchial fistula, gastro-esophageal reflux disease and neurological swallowing disorders, as well as laryngomalacia and laryngeal palsy. Prenatal diagnosis of LC has never been reported, although associated anomalies may be detected on fetal ultrasonography. Once the cleft is diagnosed, it is essential to determine its length to orient the management and treatment approach. Management involves maintenance of satisfactory ventilation, prevention of secondary pulmonary complications as a result of repeated aspirations, and adequate feeding. Endotracheal intubation may be required for respiratory distress in severe cases. Treatment requires endoscopic or external surgery to close the cleft. Surgery should be performed as early as possible to avoid complications related to aspiration and gastric reflux, except in type 0 and type 1 cases in which conservative measures must first be attempted. The prognosis is variable depending on the severity of the LC and associated malformations. Early diagnosis and appropriate treatment and management help to reduce mortality and morbidity.
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Affiliation(s)
- Nicolas Leboulanger
- Paediatric Otolaryngology-Head and Neck surgery Department, UPMC-Paris VI University, Armand-Trousseau Children's Hospital, Paris, France.
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