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Williams ZJ, Orton CM, Garner JL, Chan LT, Tana A, Shah PL, Polkey MI, Semple T, Hull JH. Feasibility of continuous bronchoscopy during exercise in the assessment of large airway movement in healthy subjects. J Appl Physiol (1985) 2024; 136:1429-1439. [PMID: 38660727 DOI: 10.1152/japplphysiol.00746.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 04/15/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
Excessive dynamic airway collapse (EDAC) is a recognized cause of exertional dyspnea arising due to invagination of the trachea and/or main bronchi. EDAC is typically assessed by evaluating large airway movement with forced expiratory maneuvers. This differs from the respiratory response to exercise hyperpnea. We aimed to evaluate large airway movement during physical activity, with continuous bronchoscopy during exercise (CBE), in healthy subjects and compare findings with resting bronchoscopic maneuvers and imaging techniques. Twenty-eight individuals were recruited to complete two visits including treadmill-based CBE, to voluntary exhaustion, and cine magnetic resonance imaging (MRI) with forced expiratory maneuvers at rest. Twenty-five subjects [aged 29 (26-33) yr, 52% female] completed the study (n = 2 withdrew before bronchoscopy, and one was unable to tolerate insertion of bronchoscope). The majority (76%) achieved a peak heart rate of >90% predicted during CBE. The procedure was prematurely terminated in five subjects (n = 3; elevated blood pressure and n = 2; minor oxygen desaturation). The CBE assessment enabled adequate tracheal visualization in all cases. Excessive dynamic airway collapse (tracheal collapse ≥50%) was identified in 16 subjects (64%) on MRI, and in six (24%) individuals during resting bronchoscopy, but in no cases with CBE. No serious adverse events were reported, but minor adverse events were evident. The CBE procedure permits visualization of large airway movement during physical activity. In healthy subjects, there was no evidence of EDAC during strenuous exercise, despite evidence during forced maneuvers on imaging, thus challenging conventional approaches to diagnosis.NEW & NOTEWORTHY This study demonstrates that large airway movement can be visualized with bronchoscopy undertaken during vigorous exercise. This approach does not require sedation and permits characterization of the behavior of the large airways and the tendency toward collapse during upright, ambulatory exercise. In healthy individuals, the response pattern of the large airways during exercise appears to differ markedly from the pattern of airway closure witnessed during forced expiratory maneuvers, assessed via imaging.
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Affiliation(s)
- Zander J Williams
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
| | - Christopher M Orton
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Justin L Garner
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Ley T Chan
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Anand Tana
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Pallav L Shah
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Michael I Polkey
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Thomas Semple
- National Heart and Lung Institute, Imperial College, London, United Kingdom
- Department of Radiology, Royal Brompton Hospital, London, United Kingdom
| | - James H Hull
- Department of Respiratory Medicine, Royal Brompton Hospital, London, United Kingdom
- Division of Surgery and Interventional Science, Institute of Sport, Exercise and Health (ISEH), University College London, London, United Kingdom
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Carlsen PH, Muralitharan P, Fenne H, Hammer IJ, Engan M, Vollsæter M, Bovim LP, Røksund OD, Halvorsen T, Clemm HH. Laryngeal response to high-intensity exercise in healthy athletes. BMJ Open Sport Exerc Med 2024; 10:e001850. [PMID: 38779574 PMCID: PMC11110563 DOI: 10.1136/bmjsem-2023-001850] [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] [Accepted: 04/15/2024] [Indexed: 05/25/2024] Open
Abstract
Introduction Exercise-induced laryngeal obstruction (EILO) is a common cause of exertional breathing problems. The current diagnostic approach rests on evaluation of laryngeal obstruction visualised by laryngoscopy performed continuously throughout a maximal exercise test (continuous laryngoscopy exercise (CLE) test) in patients who present with compatible symptoms. Laryngeal responses to high-intensity exercise in endurance athletes are not well described, potentially leading to inaccurate reference values and increasing the risk of misdiagnosing EILO. Aim To investigate laryngeal responses to high-intensity exercise in a healthy population of endurance athletes with no self-reported perception of respiratory problems. Methods A cross-sectional study was conducted at Haukeland University Hospital, Bergen, Norway, inviting amateur and professional athletes with no self-reported breathing problems who performed endurance training minimum four sessions weekly. Thirty-six eligible athletes completed a questionnaire detailing exercise habits and past and current respiratory symptoms. They performed a standardised CLE test from which cardiopulmonary exercise data and corresponding laryngeal responses were recorded. The CLE tests were evaluated in retrospect by two independent raters according to preset criteria providing a CLE score. The CLE score rates the severity of laryngeal obstruction during moderate and maximum exercise on the glottic and supraglottic regions on a scale ranging from 0 (no obstruction) to 3 (maximum obstruction). Results Twenty-nine (81%) athletes (15 females) aged 15-35 years completed a CLE test. Ten participants (33%) had a supraglottic CLE subscore of 2 or 3. Among these, two also had a glottic CLE subscore of 2 or 3. Notably, none had isolated glottic obstruction. Conclusion In healthy well-trained endurance athletes with no prior perception of respiratory symptoms, the laryngeal response to high-intensity exercise was diverse. Supraglottic laryngeal obstruction was observed in one-third of the athletes. The findings underline that a diagnosis of EILO should rest on observed laryngeal obstruction supported by compatible symptoms.
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Affiliation(s)
- Petter Helø Carlsen
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Praveen Muralitharan
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Hilde Fenne
- Western Norway University of Applied Sciences, Bergen, Norway
| | - Ida Jansrud Hammer
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Mette Engan
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Maria Vollsæter
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Lars Peder Bovim
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Ola Drange Røksund
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
- Western Norway University of Applied Sciences, Bergen, Norway
| | - Thomas Halvorsen
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Hege Havstad Clemm
- Department of Paediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
- Department of Clinical Science, University of Bergen, Bergen, Norway
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Muralitharan P, Carlsen P, Hilland M, Delestre-Levai I, Vollsæter M, Hufthammer KO, Engan M, Røksund OD, Halvorsen T, Clemm HH. Use of inhaled ipratropium bromide to improve exercise-induced laryngeal obstruction cannot be recommended. ERJ Open Res 2023; 9:00308-2022. [PMID: 36699648 PMCID: PMC9868967 DOI: 10.1183/23120541.00308-2022] [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: 06/24/2022] [Accepted: 10/18/2022] [Indexed: 11/18/2022] Open
Abstract
Introduction Exercise-induced laryngeal obstruction (EILO) is a common cause of exertional breathing problems in young adults. Current management generally consists of breathing advice, speech therapy, inspiratory muscle training or supraglottoplasty in highly motivated subjects with supraglottic collapse. Inhaled ipratropium bromide (IB) is a muscarinic receptor antagonist used to treat asthma that is suggested in a few reports to improve EILO symptoms. The aim of the present study was to investigate effects of inhaled IB in EILO diagnosed by continuous laryngoscopy exercise (CLE) test and classified by CLE scores. Methods A randomised crossover trial was conducted at Haukeland University Hospital, Bergen, Norway, enrolling participants diagnosed with EILO defined by characteristic symptoms and CLE score ≥3 (range 0-12). Two consecutive CLE tests were performed within 2 weeks, one test with and one test without prior administration of inhaled IB in a randomised order. Main outcomes were the CLE score, dyspnoea measured using a modified BORG scale (range 0-10) and cardiopulmonary exercise data provided by the CLE test. Results 20 participants (14 females) aged 12-25 years participated, and all ran to exhaustion on both tests. Mean CLE score, BORG score and peak oxygen consumption were similar in tests performed with and without IB; mean differences (95% confidence interval) were 0.08 (-0.28-0.43), 0.35 (-0.29-0.99) and -0.4 (-1.9-1.1) mL·kg-1·min-1, respectively. Conclusion Inhaled IB did not improve CLE score, dyspnoea or exercise capacity in subjects with EILO. The study does not support the use of inhaled IB to treat EILO.
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Affiliation(s)
- Praveen Muralitharan
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway,Corresponding author: Praveen Muralitharan ()
| | - Petter Carlsen
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Magnus Hilland
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Irisz Delestre-Levai
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Maria Vollsæter
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway,Department of Clinical Science, University of Bergen, Bergen, Norway
| | | | - Mette Engan
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Ola Drange Røksund
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway,Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Thomas Halvorsen
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway,Department of Clinical Science, University of Bergen, Bergen, Norway,Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Hege H. Clemm
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway,Department of Clinical Science, University of Bergen, Bergen, Norway
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Clemm HH, Olin JT, McIntosh C, Schwellnus M, Sewry N, Hull JH, Halvorsen T. Exercise-induced laryngeal obstruction (EILO) in athletes: a narrative review by a subgroup of the IOC Consensus on 'acute respiratory illness in the athlete'. Br J Sports Med 2022; 56:622-629. [PMID: 35193856 PMCID: PMC9120388 DOI: 10.1136/bjsports-2021-104704] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 02/06/2023]
Abstract
Exercise-induced laryngeal obstruction (EILO) is caused by paradoxical inspiratory adduction of laryngeal structures during exercise. EILO is an important cause of upper airway dysfunction in young individuals and athletes, can impair exercise performance and mimic lower airway dysfunction, such as asthma and/or exercise-induced bronchoconstriction. Over the past two decades, there has been considerable progress in the recognition and assessment of EILO in sports medicine. EILO is a highly prevalent cause of unexplained dyspnoea and wheeze in athletes. The preferred diagnostic approach is continuous visualisation of the larynx (via laryngoscopy) during high-intensity exercise. Recent data suggest that EILO consists of different subtypes, possibly caused via different mechanisms. Several therapeutic interventions for EILO are now in widespread use, but to date, no randomised clinical trials have been performed to assess their efficacy or inform robust management strategies. The aim of this review is to provide a state-of-the-art overview of EILO and guidance for clinicians evaluating and treating suspected cases of EILO in athletes. Specifically, this review examines the pathophysiology of EILO, outlines a diagnostic approach and presents current therapeutic algorithms. The key unmet needs and future priorities for research in this area are also covered.
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Affiliation(s)
- Hege Havstad Clemm
- Department of Pediatric and Adolescent Medicine, Haukeland Universityhospital, Bergen, Norway .,Faculty of Medicine and Dentistry, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - J Tod Olin
- Department of Pediatrics and Medicine, National Jewish Health, Denver, Colorado, USA
| | | | - Martin Schwellnus
- Sport, Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.,IOC Research Centre, South Africa
| | - Nicola Sewry
- Sport, Exercise Medicine and Lifestyle Institute (SEMLI), Faculty of Health Sciences, University of Pretoria, Pretoria, South Africa.,IOC Research Centre, South Africa
| | - James H Hull
- Department of Respiratory Medicine, Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - Thomas Halvorsen
- Department of Pediatric and Adolescent Medicine, Haukeland Universityhospital, Bergen, Norway.,Faculty of Medicine and Dentistry, Department of Clinical Science, University of Bergen, Bergen, Norway.,Norwegian School of Sports Sciences, Oslo, Norway
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Engan M, Engeset MS, Sandvik L, Gamlemshaug OCO, Engesæter IØ, Øymar K, Vollsæter M, Røksund OD, Hufthammer KO, Halvorsen T, Clemm HH. Left Vocal Cord Paralysis, Lung Function and Exercise Capacity in Young Adults Born Extremely Preterm With a History of Neonatal Patent Ductus Arteriosus Surgery-A National Cohort Study. Front Pediatr 2021; 9:780045. [PMID: 35047462 PMCID: PMC8761768 DOI: 10.3389/fped.2021.780045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 11/29/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Left vocal cord paralysis (LVCP) is a known complication of patent ductus arteriosus (PDA) surgery in extremely preterm (EP) born neonates; however, consequences of LVCP beyond the first year of life are insufficiently described. Both voice problems and breathing difficulties during physical activity could be expected with an impaired laryngeal inlet. More knowledge may improve the follow-up of EP-born subjects who underwent PDA surgery and prevent confusion between LVCP and other diagnoses. Objectives: Examine the prevalence of LVCP in a nationwide cohort of adults born EP with a history of PDA surgery, and compare symptoms, lung function, and exercise capacity between groups with and without LVCP, and vs. controls born EP and at term. Methods: Adults born EP (<28 weeks' gestation or birth weight <1,000 g) in Norway during 1999-2000 who underwent neonatal PDA surgery and controls born EP and at term were invited to complete questionnaires mapping voice-and respiratory symptoms, and to perform spirometry and maximal treadmill exercise testing. In the PDA-surgery group, exercise tests were performed with a laryngoscope positioned to evaluate laryngeal function. Results: Thirty out of 48 (63%) eligible PDA-surgery subjects were examined at mean (standard deviation) age 19.4 (0.8) years, sixteen (53%) had LVCP. LVCP was associated with self-reported voice symptoms and laryngeal obstruction during exercise, not with lung function or peak oxygen consumption (VO2peak). In the PDA-surgery group, forced expiratory volume in 1 second z-score (z-FEV1) was reduced compared to EP-born controls (n = 30) and term-born controls (n = 36); mean (95% confidence interval) z-FEV1 was -1.8 (-2.3, -1.2), -0.7 (-1.1, -0.3) and -0.3 (-0.5, -0.0), respectively. For VO2peak, corresponding figures were 37.5 (34.9, 40.2), 38.1 (35.1, 41.1), and 43.6 (41.0, 46.5) ml/kg/min, respectively. Conclusions: LVCP was common in EP-born young adults who had undergone neonatal PDA surgery. Within the PDA-surgery group, LVCP was associated with self-reported voice symptoms and laryngeal obstruction during exercise, however we did not find an association with lung function or exercise capacity. Overall, the PDA-surgery group had reduced lung function compared to EP-born and term-born controls, whereas exercise capacity was similarly reduced for both the PDA-surgery and EP-born control groups when compared to term-born controls.
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Affiliation(s)
- Mette Engan
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Merete S Engeset
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway
| | - Lorentz Sandvik
- Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | - Ole C O Gamlemshaug
- Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | - Ingvild Ø Engesæter
- Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | - Knut Øymar
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Stavanger University Hospital, Stavanger, Norway
| | - Maria Vollsæter
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
| | - Ola D Røksund
- Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway.,Faculty of Health and Social Sciences, Western Norway University of Applied Sciences, Bergen, Norway.,Department of Otolaryngology and Head and Neck Surgery, Haukeland University Hospital, Bergen, Norway
| | | | - Thomas Halvorsen
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway
| | - Hege H Clemm
- Department of Clinical Science, University of Bergen, Bergen, Norway.,Department of Pediatric and Adolescent Medicine, Haukeland University Hospital, Bergen, Norway
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