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Ghekiere O, Herbots L, Peters B, Berg BV, Dresselaers T, Franssen W, Padovani B, Ducreux D, Ferrari E, Nchimi A, Demanez S, De Bosscher R, Willems R, Heidbuchel H, La Gerche A, Claessen G, Bogaert J, Eijnde BO. Exercise-induced myocardial T1 increase and right ventricular dysfunction in recreational cyclists: a CMR study. Eur J Appl Physiol 2023; 123:2107-2117. [PMID: 37480391 PMCID: PMC10492712 DOI: 10.1007/s00421-023-05259-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 06/13/2023] [Indexed: 07/24/2023]
Abstract
PURPOSE Although cardiac troponin I (cTnI) increase following strenuous exercise has been observed, the development of exercise-induced myocardial edema remains unclear. Cardiac magnetic resonance (CMR) native T1/T2 mapping is sensitive to the pathological increase of myocardial water content. Therefore, we evaluated exercise-induced acute myocardial changes in recreational cyclists by incorporating biomarkers, echocardiography and CMR. METHODS Nineteen male recreational participants (age: 48 ± 5 years) cycled the 'L'étape du tour de France" (EDT) 2021' (175 km, 3600 altimeters). One week before the race, a maximal graded cycling test was conducted to determine individual heart rate (HR) training zones. One day before and 3-6 h post-exercise 3 T CMR and echocardiography were performed to assess myocardial native T1/T2 relaxation times and cardiac function, and blood samples were collected. All participants were asked to cycle 2 h around their anaerobic gas exchange threshold (HR zone 4). RESULTS Eighteen participants completed the EDT stage in 537 ± 58 min, including 154 ± 61 min of cycling time in HR zone 4. Post-race right ventricular (RV) dysfunction with reduced strain and increased volumes (p < 0.05) and borderline significant left ventricular global longitudinal strain reduction (p = 0.05) were observed. Post-exercise cTnI (0.75 ± 5.1 ng/l to 69.9 ± 41.6 ng/l; p < 0.001) and T1 relaxation times (1133 ± 48 ms to 1182 ± 46 ms, p < 0.001) increased significantly with no significant change in T2 (p = 0.474). cTnI release correlated with increase in T1 relaxation time (p = 0.002; r = 0.703), post-race RV dysfunction (p < 0.05; r = 0.562) and longer cycling in HR zone 4 (p < 0.05; r = 0.607). CONCLUSION Strenuous exercise causes early post-race cTnI increase, increased T1 relaxation time and RV dysfunction in recreational cyclists, which showed interdependent correlation. The long-term clinical significance of these changes needs further investigation. TRIAL REGISTRATION NUMBERS AND DATE NCT04940650 06/18/2021. NCT05138003 06/18/2021.
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Affiliation(s)
- Olivier Ghekiere
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium.
- Department of Radiology and Department of Jessa & Science, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium.
| | - Lieven Herbots
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium
- Heart Centre, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium
| | - Benjamin Peters
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium
- Department of Radiology and Department of Jessa & Science, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium
| | | | - Tom Dresselaers
- Department of Radiology, University Hospitals Leuven, Leuven, Belgium
| | - Wouter Franssen
- SMRC Sports Medical Research Center, BIOMED Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
- REVAL-Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Hasselt University, Diepenbeek, Belgium
- Department of Nutrition and Movement Sciences; NUTRIM, School for Nutrition and Translation Research Maastricht, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, The Netherlands
| | | | | | - Emile Ferrari
- Department of Cardiology, University Hospital Nice, Nice, France
| | - Alain Nchimi
- Department of Radiology, Centre Hospitalier Universitaire Luxembourg, Luxembourg, Luxembourg
| | - Sophie Demanez
- Department of Cardiology, Centre Cardiologique Orban, Liège, Belgium
| | - Ruben De Bosscher
- Department of Cardiology, University Hospitals Leuven, Leuven, Belgium
| | - Rik Willems
- Department of Cardiology, University Hospitals Leuven, Leuven, Belgium
- Department of Cardiovascular Sciences, KU Leuven, Leuven, Belgium
| | - Hein Heidbuchel
- Department of Cardiovascular Sciences, University of Antwerp, Antwerp, Belgium
- Department of Cardiology, University Hospital Antwerp, Antwerp, Belgium
| | - Andre La Gerche
- Department of Cardiology, Baker Heart and Diabetes Institute, Melbourne, Australia
| | - Guido Claessen
- Faculty of Medicine and Life Sciences/LCRC (-MHU), Hasselt University, Agoralaan, 3590, Diepenbeek, Belgium
- Heart Centre, Jessa Hospital, Stadsomvaart 11, 3500, Hasselt, Belgium
| | - Jan Bogaert
- Department of Radiology, University Hospitals Leuven, Leuven, Belgium
| | - Bert O Eijnde
- SMRC Sports Medical Research Center, BIOMED Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
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Lourens MS, Berg BV, Hoogsteden HC, Bogaard JM. Detection of flow limitation in mechanically ventilated patients. Intensive Care Med 2001; 27:1312-20. [PMID: 11511944 DOI: 10.1007/s001340101010] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2000] [Accepted: 05/17/2001] [Indexed: 01/12/2023]
Abstract
OBJECTIVE In mechanically ventilated patients flow limitation often goes unrecognised. We compared three methods for detection of flow limitation in mechanically ventilated patients: the resistance method, the negative expiratory pressure (NEP) method, and the interrupter method. DESIGN Prospective study. SETTING A medical intensive care unit in a university hospital. PATIENTS Twenty-six patients (20 COPD, six other pathology), mechanically ventilated under sedation. MEASUREMENTS AND RESULTS Respiratory mechanics were obtained during application of the three methods. For the resistance method, flow limitation was expressed as percentage of expiratory tidal volume, in which flow did not decrease (FLP-R). For the NEP method, flow limitation was expressed as percentage of expiratory tidal volume in which flow did not increase (FLP-NEP). For the interrupter method, flow limitation was expressed as area of spike-overshoot in flow after interruption. In 18 COPD patients, flow limitation was detected by all methods; mean FLP-R 76% (SD 12%), mean FLP-NEP 90% (SD 11%), mean spike area 21 ml (SD 7 ml). In three patients with other pathology, these values were, respectively, 20% (SD 19%), 48% (SD 21%), and 5 ml (SD 4 ml). The three methods were in close agreement. In nine patients the resistance method increased flow and in six patients the NEP method decreased flow compared to the unimpeded breath. CONCLUSIONS In mechanically ventilated patients, flow limitation can well be detected by the resistance-, NEP-, and interrupter methods. However, the NEP method can overestimate the flow limited portion, while the resistance method can underestimate the flow limited portion. The interrupter method is found to be less practical.
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Affiliation(s)
- M S Lourens
- Department of Pulmonary and Intensive Care Medicine, Erasmus Medical Centre Rotterdam, Dr. Molewaterplein 40, 3015 GD Rotterdam, The Netherlands.
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