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Titel: Cerebral oxygen availability during exercise in COPD patients with cognitive impairment
VerfasserIn: Andrianopoulos, Vasileios
Vogiatzis, Ioannis
Gloeckl, Rainer
Bals, Robert
Koczulla, Rembert A.
Kenn, Klaus
Sprache: Englisch
Titel: Respiratory Physiology & Neurobiology
Bandnummer: 254
Seiten: 64-72
Verlag/Plattform: Elsevier
Erscheinungsjahr: 2018
Freie Schlagwörter: Chronic obstructive pulmonary disease
Comorbidities
Cognitive function
Cerebral blood flow
Exercise
Pulmonary rehabilitation
DDC-Sachgruppe: 610 Medizin, Gesundheit
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Insufficient cerebral blood flow regulation to meet increasing metabolic demand during physical exertion could be associated with cognitive impairment. We compared cerebral oxygen availability during exercise in cognitively impaired (CI) to cognitively normal (CN) COPD patients. Fifty-two patients (FEV1: 51 ± 16%) were classified as CN or CI according to the Montreal Cognitive Assessment. Patients performed cycle-ergometry at 75% peak capacity with continuous measurement of Near-Infrared Spectroscopy frontal-cortex Tissue oxygen Saturation Index (TSI), cerebral haemoglobin indices (oxy/deoxy/total- Hb), transcutaneous carbon-dioxide partial pressure (TcPCO2), and arterial oxygen saturation (SpO2). Twenty-one patients (40%) presented evidences of CI. During exercise, CN and CI patients exhibited mild to moderate SpO2decline (nadir[Δ]≥ −3 ± 2% and −5 ± 3%, respectively) but preserved baseline frontal-cortex TSI levels, whilst presenting small TcPCO2 perturbations and increased cerebral total-Hb (post [Δ]≥ 2.0 ± 3 μM sec−1). CI patients preserve the capacity to adequately maintain cerebral oxygen availability during submaximal exercise. Therefore, rehabilitative exercise training in CI patients with COPD exhibiting mild to moderate exercise-induced SpO2 decline does not appear to lead to reduced cerebral oxygen availability.
DOI der Erstveröffentlichung: 10.1016/j.resp.2018.05.001
URL der Erstveröffentlichung: https://www.sciencedirect.com/science/article/abs/pii/S1569904818301022
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-366651
hdl:20.500.11880/33306
http://dx.doi.org/10.22028/D291-36665
ISSN: 1569-9048
Datum des Eintrags: 6-Jul-2022
Fakultät: M - Medizinische Fakultät
Fachrichtung: M - Innere Medizin
Professur: M - Prof. Dr. Robert Bals
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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