دورية أكاديمية
Intercostal and forearm muscle deoxygenation during respiratory fatigue in patients with heart failure: potential role of a respiratory muscle metaboreflex
| العنوان: | Intercostal and forearm muscle deoxygenation during respiratory fatigue in patients with heart failure: potential role of a respiratory muscle metaboreflex |
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| المؤلفون: | A.M. Moreno, R.R.T. Castro, B.M. Silva, H. Villacorta, M. Sant'Anna Junior, A.C.L. Nóbrega |
| المصدر: | Brazilian Journal of Medical and Biological Research, Vol 47, Iss 11, Pp 972-976 (2014) |
| بيانات النشر: | Associação Brasileira de Divulgação Científica, 2014. |
| سنة النشر: | 2014 |
| المجموعة: | LCC:Medicine (General) LCC:Biology (General) |
| مصطلحات موضوعية: | Heart failure, Metaboreflex, Muscles respiratory, Medicine (General), R5-920, Biology (General), QH301-705.5 |
| الوصف: | The purpose of this study was to determine the effect of respiratory muscle fatigue on intercostal and forearm muscle perfusion and oxygenation in patients with heart failure. Five clinically stable heart failure patients with respiratory muscle weakness (age, 66±12 years; left ventricle ejection fraction, 34±3%) and nine matched healthy controls underwent a respiratory muscle fatigue protocol, breathing against a fixed resistance at 60% of their maximal inspiratory pressure for as long as they could sustain the predetermined inspiratory pressure. Intercostal and forearm muscle blood volume and oxygenation were continuously monitored by near-infrared spectroscopy with transducers placed on the seventh left intercostal space and the left forearm. Data were compared by two-way ANOVA and Bonferroni correction. Respiratory fatigue occurred at 5.1±1.3 min in heart failure patients and at 9.3±1.4 min in controls (P0.05). Respiratory fatigue in heart failure reduced intercostal and forearm muscle blood volume (P |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1414-431X |
| Relation: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014001100972&lng=en&tlng=en; https://doaj.org/toc/1414-431X |
| DOI: | 10.1590/1414-431X20143896 |
| URL الوصول: | https://doaj.org/article/9660e7ae5ef44cac9bf622bf143532ae |
| رقم الأكسشن: | edsdoj.9660e7ae5ef44cac9bf622bf143532ae |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 1414431X |
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| DOI: | 10.1590/1414-431X20143896 |