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Alauddin W, Alam S, Mishra M, Radke PM, Shree R, Prajesh BR, Chaturvedi A, Patil A, Singh TK, Ahmad MF. A Cross-Sectional Study of Cardiovascular Autonomic Reactivity in Ehlers-Danlos Syndrome. Cureus 2024; 16:e64542. [PMID: 39144845 PMCID: PMC11323960 DOI: 10.7759/cureus.64542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/14/2024] [Indexed: 08/16/2024] Open
Abstract
BACKGROUND Ehlers-Danlos syndrome (EDS) may be linked to dysfunction in the autonomic nervous system, affecting collagen production and processing. These collagen abnormalities lead to a condition called dysautonomia. Findings underscore the need for further investigation into autonomic nervous system function in EDS which involves larger studies to strengthen the evidence of non-invasive screening tools like cardiovascular reflex tests. These tests might offer a valuable way to assess an individual's risk for future complications. OBJECTIVE This study aimed to assess autonomic reactivity in EDS patients using cardiovascular reflex tests. METHODS This study was conducted at the Department of Physiology, Naraina Medical College and Research Centre, Kanpur (Uttar Pradesh). The cardiovascular reflex test was used to identify 60 individuals, 30 of whom were EDS patients and 30 were healthy controls, with a common age limit of 18-25 years. Cardiovascular reflex tests, such as the delta heart rate, lying-to-standing test (LST), deep breathing test (DBT), and Valsalva maneuver, were performed and recorded for each subject. IBM SPSS Statistics for Windows, Version 21.0 (Released 2012; IBM Corp., Armonk, New York, United States) was used for the compilation and analysis of data. RESULTS The expiration-to-inspiration (E:I) ratio and delta heart rate of the EDS patients both significantly decreased as compared to the healthy control group (1.10±0.02 versus 1.22±0.77 and 14.03±0.31 versus 15.52±0.32). The Valsalva ratio of the EDS patients decreased (1.28±0.01) as compared to the healthy control group (1.46±0.01), which was statistically significant. The 30:15 ratio in the EDS patients was significantly decreased compared to the healthy control group (1.08±0.01 versus 1.15±0.01). The handgrip test and cold pressor test results were statistically insignificant. CONCLUSION The study suggests a connection between EDS and autonomic nervous system dysfunction, causing symptoms like tachycardia and hypotension. It recommends exploring non-invasive cardiovascular reflex tests as a tool to identify autonomic dysfunction in EDS patients and predict long-term cardiovascular complications. These tests offer valuable insights into autonomic function.
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Affiliation(s)
- Waqas Alauddin
- Physiology, Naraina Medical College and Research Centre, Kanpur, IND
| | - Shahnawaz Alam
- Physiology, Naraina Medical College and Research Centre, Kanpur, IND
| | - Mohit Mishra
- Physiology, Naraina Medical College and Research Centre, Kanpur, IND
| | | | - Rishika Shree
- Medicine, Naraina Medical College and Research Centre, Kanpur, IND
| | | | | | - Anant Patil
- Pharmacology, D. Y. Patil University School of Medicine, Navi Mumbai, IND
| | - Tarun Kumar Singh
- Forensic Medicine, Naraina Medical College and Research Centre, Kanpur, IND
| | - Malik Faizan Ahmad
- Community Medicine, Naraina Medical College and Research Centre, Kanpur, IND
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Hakimi A, Bergoin C, De Jesus A, Hermand E, Fabre C, Mucci P. Impairment of lung volume perception and breathing control in hypermobile Ehlers-Danlos syndrome. Sci Rep 2024; 14:8119. [PMID: 38582758 PMCID: PMC10998874 DOI: 10.1038/s41598-024-58890-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/04/2024] [Indexed: 04/08/2024] Open
Abstract
Breathing difficulties and exertional dyspnea are frequently reported in hypermobile Ehlers-Danlos syndrome (hEDS); however, they are not clearly explained. An impaired proprioception or the addition of a cognitive task could influence ventilatory control. How can the perception of lung volume be measured? Is lung volume perception impaired in hEDS patients? Is the breathing control impaired during a cognitive task in hEDS patients? A device was developed to assess the accuracy of lung volume perception in patients with hEDS and matched control subjects. In the second step, ventilation was recorded in both groups with and without a cognitive task. Two groups of 19 subjects were included. The accuracy of lung volume perception was significantly (P < 0.01) lower at 30% of inspired vital capacity in patients with hEDS in comparison to the control group, and they showed erratic ventilation (based on spatial and temporal criteria) when performing a cognitive task. These data support the influence of the proprioceptive deficit on ventilatory control in hEDS patients. These elements may help to understand the respiratory manifestations found in hEDS. Future research should focus on this relationship between lung volume perception and ventilation, and could contribute to our understanding of other pathologies or exercise physiology.Trial registration number: ClinicalTrials.gov, NCT05000151.
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Affiliation(s)
- Adrien Hakimi
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, 59000, Lille, France.
- Clinique de la Mitterie, Lomme, France.
- URePSSS, Eurasport, 413, Avenue Eugène Avinée, 59120, Loos, France.
| | - Cyrille Bergoin
- Clinique de la Mitterie, Lomme, France
- Cabinet de Pneumologie, Tourcoing, France
| | - Anna De Jesus
- Clinique de la Mitterie, Lomme, France
- Cabinet de Pneumologie, Tourcoing, France
| | - Eric Hermand
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, 59000, Lille, France
- Université Sorbonne Paris Nord, UMR INSERM U1272 Hypoxie & Poumon, Bobigny, France
| | - Claudine Fabre
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, 59000, Lille, France
| | - Patrick Mucci
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369 - URePSSS - Unité de Recherche Pluridisciplinaire Sport Santé Société, 59000, Lille, France
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3
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Diesler R, Ahmad K, Chalabreysse L, Glérant JC, Harzallah I, Touraine R, Si-Mohamed S, Cottin V. [Genetic diffuse cystic lung disease in adults]. Rev Mal Respir 2024; 41:69-88. [PMID: 37951745 DOI: 10.1016/j.rmr.2023.08.005] [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: 05/29/2023] [Accepted: 08/31/2023] [Indexed: 11/14/2023]
Abstract
Multiple cystic lung diseases comprise a wide range of various diseases, some of them of genetic origin. Lymphangioleiomyomatosis (LAM) is a disease occurring almost exclusively in women, sporadically or in association with tuberous sclerosis complex (TSC). Patients with LAM present with lymphatic complications, renal angiomyolipomas and cystic lung disease responsible for spontaneous pneumothoraces and progressive respiratory insufficiency. TSC and LAM have been ascribed to mutations in TSC1 or TSC2 genes. Patients with TSC are variably affected by cutaneous, cognitive and neuropsychiatric manifestations, epilepsy, cerebral and renal tumors, usually of benign nature. Birt-Hogg-Dubé syndrome is caused by mutations in FLCN encoding folliculin. This syndrome includes lung cysts of basal predominance, cutaneous fibrofolliculomas and various renal tumors. The main complications are spontaneous pneumothoraces and renal tumors requiring systematic screening. The mammalian target of rapamycin (mTOR) pathway is involved in the pathophysiology of TSC, sporadic LAM and Birt-Hogg-Dubé syndrome. MTOR inhibitors are used in LAM and in TSC while Birt-Hogg-Dubé syndrome does not progress towards chronic respiratory failure. Future challenges in these often under-recognized diseases include the need to reduce the delay to diagnosis, and to develop potentially curative treatments. In France, physicians can seek help from the network of reference centers for the diagnosis and management of rare pulmonary diseases.
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Affiliation(s)
- R Diesler
- UMR754, INRAE, ERN-LUNG, service de pneumologie, centre de référence coordonnateur des maladies pulmonaires rares (OrphaLung), hôpital Louis-Pradel, Hospices civils de Lyon, université Lyon 1, Lyon, France
| | - K Ahmad
- ERN-LUNG, service de pneumologie, centre de référence coordonnateur des maladies pulmonaires Rares (OrphaLung), hôpital Louis-Pradel, Hospices civils de Lyon, université Lyon 1, Lyon, France
| | - L Chalabreysse
- Service de pathologie, groupe hospitalier Est, Hospices civils de Lyon, université Lyon 1, Lyon, France
| | - J-C Glérant
- Service d'explorations fonctionnelles respiratoires, hôpital Louis-Pradel, Hospices civils de Lyon, Lyon, France
| | - I Harzallah
- Service de génétique clinique, chromosomique et moléculaire, CHU-hôpital Nord, Saint-Étienne, France
| | - R Touraine
- Service de génétique clinique, chromosomique et moléculaire, CHU-hôpital Nord, Saint-Étienne, France
| | - S Si-Mohamed
- Service d'imagerie, hôpital Louis-Pradel, Hospices civils de Lyon, université Lyon 1, Lyon, France
| | - V Cottin
- UMR754, INRAE, ERN-LUNG, service de pneumologie, centre de référence coordonnateur des maladies pulmonaires rares (OrphaLung), hôpital Louis-Pradel, Hospices civils de Lyon, université Lyon 1, Lyon, France.
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Hakimi A, Bergoin C, De Jesus A, Hoorelbeke A, Ramon P, Florea O, Fabre C, Mucci P. Multiple Sustainable Benefits of a Rehabilitation Program in Therapeutic Management of Hypermobile Ehlers-Danlos Syndrome: A Prospective and Controlled Study at Short- and Medium-Term. Arch Phys Med Rehabil 2023; 104:2059-2066. [PMID: 37406924 DOI: 10.1016/j.apmr.2023.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/20/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVE To evaluate the effects of a 9-week rehabilitation program (RP) for patients with hypermobile Ehlers-Danlos syndrome (hEDS) in the short- and medium-term. DESIGN Nonrandomized controlled trial with 6 months follow-up. SETTING Outpatient rehabilitation program. PARTICIPANTS A referred sample of 36 hEDS patients were assessed for eligibility (N=36), 25 were included, 22 completed the RP and 19 completed the follow-up. INTERVENTIONS A 9 -week control period without intervention followed by a 9-week RP. MAIN OUTCOME MEASURE Functional exercise capacity was used as a primary outcome measure. Balance, kinesiophobia, fatigue, pain, quality of life, anxiety, depression, and hyperventilation were measured as secondary outcomes. RESULTS No significant change was observed during the 9-week control period before the RP. There was a significant improvement immediately after the RP for the functional exercise capacity, balance with eyes closed, fatigue, and quality of life (P<.05). Even more improvements were found 6 weeks after the end of the RP, and there was still an improvement after 6 months in functional exercise capacity, kinesiophobia, depression, hyperventilation, and some components of the quality of life. CONCLUSION This study supports the effectiveness of an RP as a useful management tool for hEDS patients.
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Affiliation(s)
- Adrien Hakimi
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, Lille, France; Clinique de la Mitterie, Lomme, France.
| | - Cyrille Bergoin
- Clinique de la Mitterie, Lomme, France; Cabinet de pneumologie, Tourcoing, France
| | - Anna De Jesus
- Clinique de la Mitterie, Lomme, France; Cabinet de pneumologie, Tourcoing, France
| | | | | | | | - Claudine Fabre
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, Lille, France
| | - Patrick Mucci
- Univ. Lille, Univ. Artois, Univ. Littoral Côte d'Opale, ULR 7369-URePSSS-Unité de Recherche Pluridisciplinaire Sport Santé Société, Lille, France
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5
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Chhabria MS, You JY, Subramani MV, Yadav R, Lane CR, Farver C, Rodriguez ER, McCurry KR, Budev MM, Tan CD. Postmortem Identification of Vascular Ehlers-Danlos Syndrome in a Lung Transplant Recipient. Transplant Direct 2023; 9:e1469. [PMID: 37197014 PMCID: PMC10184983 DOI: 10.1097/txd.0000000000001469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/13/2023] [Accepted: 02/16/2023] [Indexed: 05/19/2023] Open
Affiliation(s)
- Mamta S. Chhabria
- Department of Pulmonary and Critical Care Medicine, Cleveland Clinic, Cleveland, OH
| | - Jee Young You
- Department of Pulmonary and Critical Care Medicine, Cleveland Clinic, Cleveland, OH
| | | | - Ruchi Yadav
- Department of Diagnostic Radiology, Cleveland Clinic, Cleveland, OH
| | - Charles R. Lane
- Department of Pulmonary Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH
| | - Carol Farver
- Department of Pathology, Cleveland Clinic, Cleveland, OH
| | | | - Kenneth R. McCurry
- Department of Thoracic and Cardiovascular Surgery, Cleveland Clinic, Cleveland, OH
| | - Marie M. Budev
- Department of Pulmonary Medicine, Respiratory Institute, Cleveland Clinic, Cleveland, OH
| | - Carmela D. Tan
- Department of Pathology, Cleveland Clinic, Cleveland, OH
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Reina-Gutiérrez S, Caty G, Torres-Costoso A, Pitance L, Manicourt DH, Reychler G. Assessment of functional respiratory complaints and related factors in people with hypermobile Ehlers-Danlos syndrome: Cross-sectional study. Respir Med Res 2023; 83:101017. [PMID: 37209665 DOI: 10.1016/j.resmer.2023.101017] [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: 09/21/2022] [Revised: 03/28/2023] [Accepted: 04/07/2023] [Indexed: 05/22/2023]
Abstract
BACKGROUND Hypermobile Ehlers-Danlos Syndrome (hEDS) is the most common type of EDS. Apart from joint symptoms, people with hEDS have systemic manifestations as a chronic modification of the breathing pattern (functional respiratory complaints (FRCs)) and mental disorders. However, the prevalence of FRCs, and its relationship with mental disorders, have not yet been estimated for this population. OBJECTIVES To assess the FRCs, central sensitization, disease perception, depression, and anxiety in people with hEDS from Belgium; and to identify the clustering of FRCs and determine any association with the characteristics assessed for this sample. METHODS This cross-sectional study assessed socio-demographic characteristics, Nijmegen questionnaire (NQ), Central Sensitization Inventory (CSI), Brief Illness Perception Questionnaire, and the Hospital Anxiety and Depression Scale (HADS) in people with hEDS from Belgium. A two-step cluster analysis was performed to identify clusters according to NQ, and to understand how the other questionnaires are grouped among these clusters. RESULTS The Spearman correlation coefficients showed that all the outcomes were significantly and positively correlated with each other (p<0.05). Furthermore, 84.9% of the sample had symptoms suggestive of FRCs, and 54.3% had probable anxiety. Three clusters were grouped (no FRCs, mild FRCs, and severe FRCs), with NQ, HADS-D and CSI-part A being the variables that contributed the most. People from cluster of severe FRCs got the worst scores for all the questionnaires. CONCLUSION FRCs, central sensitization, depression, and anxiety are prevalent comorbidities in people with hEDS. Moreover, those people with FRCs had worse results in the investigated parameters, with depression being the variable that contributed the most to the clusters of FRCs. Consequently, investigating mechanisms for these co-occurring symptom profiles may improve our understanding of pathogenesis and indicate new management strategies to alleviate these symptoms and lead to the development of more effective care for persons with hEDS.
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Affiliation(s)
- Sara Reina-Gutiérrez
- Universidad de Castilla-La Mancha, Health and Social Research Center, Cuenca. Spain
| | - Gilles Caty
- Service de Médecine Physique, Centre Hospitalier Wallonie Picarde (CHWAPI), Tournai, Belgium
| | - Ana Torres-Costoso
- Universidad de Castilla-La Mancha, Facultad de Fisioterapia y Enfermería, Toledo, Spain.
| | - Laurent Pitance
- Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL & Dermatologie, Université Catholique de Louvain, Brussels, Belgium; Oral and maxillofacial surgery department, Cliniques Universitaires Saint-Luc, Brussels, Belgium; Secteur de kinésithérapie et ergothérapie, Cliniques universitaires Saint-Luc, Brussels, Belgium
| | - Daniel H Manicourt
- Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL & Dermatologie, Université Catholique de Louvain, Brussels, Belgium
| | - Gregory Reychler
- Institut de Recherche Expérimentale et Clinique (IREC), Pôle de Pneumologie, ORL & Dermatologie, Université Catholique de Louvain, Brussels, Belgium; Secteur de kinésithérapie et ergothérapie, Cliniques universitaires Saint-Luc, Brussels, Belgium; Service de Pneumologie, Cliniques Universitaires Saint-Luc, Brussels, Belgium
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Rozenberg D, Al Kaabi N, Camacho Perez E, Nourouzpour S, Lopez-Hernandez L, McGillis L, Goligher E, Reid WD, Chow CW, Ryan CM, Kumbhare D, Huszti E, Champagne K, Raj S, Mak S, Santa Mina D, Clarke H, Mittal N. Evaluation and Management of Dyspnea in Hypermobile Ehlers-Danlos Syndrome and Generalized Hypermobility Spectrum Disorder: Protocol for a Pilot and Feasibility Randomized Controlled Trial. JMIR Res Protoc 2023; 12:e44832. [PMID: 36939815 PMCID: PMC10131980 DOI: 10.2196/44832] [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: 12/17/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Dyspnea is a prevalent symptom in individuals with hypermobile Ehlers-Danlos Syndrome (hEDS) and generalized hypermobility spectrum disorder (G-HSD), yet its contributors have not been identified. One known contributor to dyspnea is respiratory muscle weakness. The feasibility and effectiveness of inspiratory muscle training (IMT) in combination with standard-of-care rehabilitation (aerobic, resistance, neuromuscular stabilization, and balance and proprioception exercises) in improving respiratory muscle strength and patient-reported outcomes in patients with hEDS or G-HSD have not been evaluated. OBJECTIVE This study aims to evaluate dyspnea, respiratory muscle strength, and patient-reported outcome measures (PROMs) in hEDS or G-HSD compared with healthy controls and to assess the feasibility of a randomized controlled trial of IMT and standard-of-care rehabilitation for improving respiratory muscle strength, exercise capacity, and PROMs compared with standard-of-care rehabilitation in hEDS and G-HSD. METHODS The study will include 34 participants with hEDS or G-HSD and 17 healthy, age- and sex-matched controls to compare respiratory muscle structure and function and PROMs. After baseline assessments, participants with hEDS or G-HSD will be randomized into the intervention group and provided IMT combined with Ehlers-Danlos Syndrome standard-of-care rehabilitation or into the usual care group, and provided only standard-of-care rehabilitation for 8 weeks. The intervention group will be prescribed IMT in their home environment using the POWERbreathe K5 IMT device (POWERbreathe International Ltd). IMT will comprise 2 daily sessions of 30 breaths for 5 days per week, with IMT progressing from 20% to 60% of the baseline maximal inspiratory pressure (MIP) over an 8-week period. Feasibility will be assessed through rates of recruitment, attrition, adherence, adverse events, and participant satisfaction. The primary pilot outcome is MIP change over an 8-week period in hEDS or G-HSD. Secondary outcomes will include the evaluation of dyspnea using Medical Research Council Scale and 18-point qualitative dyspnea descriptors; diaphragmatic thickening fraction using ultrasound; respiratory muscle endurance; pulmonary function; prefrontal cortical activity using functional near-infrared spectroscopy; aerobic capacity during cardiopulmonary exercise testing; quality of life using Short Form-36; and scores from the Depression, Anxiety, and Stress scale-21. These measures will also be performed once in healthy controls to compare normative values. Multivariable regression will be used to assess the contributors to dyspnea. Paired 2-tailed t tests will be used to assess the changes in MIP and secondary measures after 8 weeks of IMT. RESULTS Study recruitment began in August 2021 and, with several disruptions owing to COVID-19, is expected to be completed by December 2023. CONCLUSIONS This study will provide a better understanding of the factors associated with dyspnea and the feasibility and effectiveness of IMT combined with standard-of-care rehabilitation. IMT may be a novel therapeutic strategy for improving respiratory muscle function and patient-reported outcomes in individuals with hEDS or G-HSD. TRIAL REGISTRATION ClinicalTrials.gov NCT04972565; https://clinicaltrials.gov/ct2/show/NCT04972565. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/44832.
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Affiliation(s)
- Dmitry Rozenberg
- Respirology and Lung Transplantation, Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
| | - Noor Al Kaabi
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
- Respirology, Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Encarna Camacho Perez
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
- Respirology, Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Sahar Nourouzpour
- Respirology, Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Laura Lopez-Hernandez
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
| | - Laura McGillis
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
| | - Ewan Goligher
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Respirology, Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
| | - W Darlene Reid
- KITE-Toronto Rehab, University Health Network, Toronto, ON, Canada
- Physical Therapy, University of Toronto, Toronto, ON, Canada
| | - Chung-Wai Chow
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Respirology, Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Clodagh M Ryan
- KITE-Toronto Rehab, University Health Network, Toronto, ON, Canada
| | - Dinesh Kumbhare
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- KITE-Toronto Rehab, University Health Network, Toronto, ON, Canada
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
| | - Ella Huszti
- Biostatistics Research Unit, University Health Network, Toronto, ON, Canada
| | | | - Satish Raj
- Department of Cardiac Sciences, Cumming School of Medicine, Calgary, AB, Canada
| | - Susanna Mak
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Department of Cardiology, Mount Sinai Hospital, Toronto, ON, Canada
| | - Daniel Santa Mina
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia and Pain Management, University Health Network, Toronto, ON, Canada
| | - Hance Clarke
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
- Department of Anesthesia and Pain Management, University Health Network, Toronto, ON, Canada
| | - Nimish Mittal
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- GoodHope Ehlers-Danlos Syndrome Clinic, University Health Network, Toronto, ON, Canada
- KITE-Toronto Rehab, University Health Network, Toronto, ON, Canada
- Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada
- Department of Anesthesia and Pain Management, University Health Network, Toronto, ON, Canada
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8
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Evidence of ventilatory constraints during exercise in hypermobile Ehlers-Danlos syndrome. Eur J Appl Physiol 2022; 122:2367-2374. [PMID: 35941284 DOI: 10.1007/s00421-022-05017-y] [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: 03/07/2022] [Accepted: 07/25/2022] [Indexed: 11/03/2022]
Abstract
PURPOSE Hypermobile Ehlers-Danlos syndrome (hEDS) is a connective tissue disorder with many different symptoms such as pain, fatigue, dysautonomia, or respiratory symptoms. Among the respiratory manifestations described, the most frequent are exertional dyspnea and breathing difficulties. Mechanical ventilatory constraints during exercise could participate in these respiratory manifestations. The objective of this study was to explore the response of pulmonary flow-volume loops to exercise in patients with hEDS and to look for dynamic hyperinflation and expiratory flow limitation during exercise. METHODS For this purpose, breathing pattern and tidal exercise flow-volume loops were recorded at two workloads (30% and 80% of the peak power output) of a constant load exercise test. RESULTS Twelve patients were included (11 women, mean age 41 ± 14 years). The results showed a decrease (p = 0.028) in the inspiratory capacity (from 3.12 ± 0.49 L to 2.97 ± 0.52 L), an increase (p = 0.025) in the end-expiratory lung volume (from 0.73 ± 0.68 L to 0.88 ± 0.66 L, i.e., from EELV comprising 17 ± 12% to 21 ± 12% of forced vital capacity) between the two workloads in favor of dynamic hyperinflation, and half of the patients had expiratory flow limitations. CONCLUSION This exploratory study provides evidence for mechanical ventilatory constraints during exercise in patients with hEDS, which may induce discomfort during exercise and could contribute to the respiratory symptomatology. TRIAL REGISTRATION NUMBER This study is part of a larger clinical trial (ID: NCT04680793, December 2020).
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