Transcranial doppler ultrasonographic evaluation of cerebral circulation during passive tilting in patients with Parkinson's disease
Identifieur interne : 000F24 ( Main/Exploration ); précédent : 000F23; suivant : 000F25Transcranial doppler ultrasonographic evaluation of cerebral circulation during passive tilting in patients with Parkinson's disease
Auteurs : Ebru Mihci [Turquie] ; Babür Dora [Turquie] ; Sevin Balkan [Turquie]Source :
- Journal of Clinical Ultrasound [ 0091-2751 ] ; 2007-03.
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Abstract
Purpose.: To assess the effects of the tilt test on cerebral blood flow velocity (CBFV), blood pressure, and heart rate in patients with Parkinson's disease (PD) without symptomatic orthostatic dysautonomia. Methods.: Thirty patients with idiopathic PD and 15 healthy controls were included. Mean middle cerebral artery blood flow velocity (CBFV) was recorded with transcranial Doppler sonography, while systolic (SBP), diastolic (DBP), and mean (MBP) blood pressure and heart rate were measured in the supine position and after passive tilting. Results.: There was no difference in resting SBP, DBP, or MBP between patients and controls. CBFV was lower at rest in patients than in controls and dropped significantly and similarly after tilting in both groups. SBP decreased in patients during the first 5 minutes of tilting (p < 0.05), whereas it increased progressively after the first minute in controls. In patients, DBP decreased slightly and MBP dropped during the first 2 minutes, then increased. Baseline heart rate was higher in patients than in controls (p < 0.05) and increased in both groups during tilting. Conclusion.: Our results suggest that cardiovascular responses to tilting are delayed in PD patients and that subclinical autonomic dysfunction may be present even in the absence of symptomatic orthostatic dysautonomia. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2007
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DOI: 10.1002/jcu.20309
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Clin. Ultrasound</title><idno type="ISSN">0091-2751</idno><idno type="eISSN">1097-0096</idno><imprint><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2007-03">2007-03</date><biblScope unit="volume">35</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="138">138</biblScope><biblScope unit="page" to="143">143</biblScope></imprint><idno type="ISSN">0091-2751</idno></series><idno type="istex">6317255219BE82F07A0022689BAF0A28CC03C1AD</idno><idno type="DOI">10.1002/jcu.20309</idno><idno type="ArticleID">JCU20309</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0091-2751</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Parkinson's disease</term><term>autoregulation</term><term>cerebral blood flow velocity</term><term>orthostasis</term><term>transcranial Doppler sonography</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Purpose.: To assess the effects of the tilt test on cerebral blood flow velocity (CBFV), blood pressure, and heart rate in patients with Parkinson's disease (PD) without symptomatic orthostatic dysautonomia. Methods.: Thirty patients with idiopathic PD and 15 healthy controls were included. Mean middle cerebral artery blood flow velocity (CBFV) was recorded with transcranial Doppler sonography, while systolic (SBP), diastolic (DBP), and mean (MBP) blood pressure and heart rate were measured in the supine position and after passive tilting. Results.: There was no difference in resting SBP, DBP, or MBP between patients and controls. CBFV was lower at rest in patients than in controls and dropped significantly and similarly after tilting in both groups. SBP decreased in patients during the first 5 minutes of tilting (p < 0.05), whereas it increased progressively after the first minute in controls. In patients, DBP decreased slightly and MBP dropped during the first 2 minutes, then increased. Baseline heart rate was higher in patients than in controls (p < 0.05) and increased in both groups during tilting. Conclusion.: Our results suggest that cardiovascular responses to tilting are delayed in PD patients and that subclinical autonomic dysfunction may be present even in the absence of symptomatic orthostatic dysautonomia. © 2007 Wiley Periodicals, Inc. J Clin Ultrasound, 2007</div></front></TEI><affiliations><list><country><li>Turquie</li></country></list><tree><country name="Turquie"><noRegion><name sortKey="Mihci, Ebru" sort="Mihci, Ebru" uniqKey="Mihci E" first="Ebru" last="Mihci">Ebru Mihci</name></noRegion><name sortKey="Balkan, Sevin" sort="Balkan, Sevin" uniqKey="Balkan S" first="Sevin" last="Balkan">Sevin Balkan</name><name sortKey="Dora, Babur" sort="Dora, Babur" uniqKey="Dora B" first="Babür" last="Dora">Babür Dora</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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