| Induced arterial hypotension for interventional thoracic aortic stent-graft placement: impact on intracranial haemodynamics and cognitive function. | |
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MedLine Citation:
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PMID: 12622498 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND AND OBJECTIVE: The study investigated the impact of induced arterial hypotension for the facilitation of endovascular stent-graft placement in patients with thoracic aortic aneurysm on cerebral blood flow velocity and neurological/neurocognitive outcome. METHODS: In 27 ASA III patients, cerebral blood flow velocity was recorded during induced arterial hypotension for endovascular stent-graft placement using transcranial Doppler sonography and the Folstein Mini Mental State Examination and the National Institute of Health Stroke Scale were performed before and after the intervention. RESULTS: Mean arterial pressure was decreased <50 mmHg, and in 22 patients it was <40 mmHg. Diastolic cerebral blood flow velocity decreased by 59%. Postoperatively, six of 21 patients exhibited changes in the Folstein Mini Mental State Examination and four of these six patients in the National Institute of Health Stroke Scale as indices of new-found neurocognitive dysfunction, but there were no signs of stroke. Loss of the diastolic blood flow profile was detected in two of six patients with new-found neurocognitive dysfunctions and in 18 of 21 patients with no new-found neurocognitive dysfunction. Changes in the Folstein Mini Mental State Examination on postoperative day 1 were correlated to the pre-procedural Folstein Mini Mental State Examination, but not to the time spent with a mean arterial pressure <50 mmHg, <40 mmHg or with a loss of diastolic blood flow profile. CONCLUSIONS: Transcranial Doppler sonography visualizes the individual effect of induced hypotension and the period of intracranial circulatory arrest during aortic stent-graft placement. However, transient new-found neurocognitive dysfunctions occur independently of the transcranial Doppler data, and are in close correlation to the neurocognitive state before the procedure. The results suggest that induced arterial hypotension is not the major factor for postoperative new-found neurocognitive dysfunction. |
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Authors:
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G von Knobelsdorff; R M Höppner; P H Tonner; A Paris; C A Nienaber; J Scholz; J Schulte am Esch |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: European journal of anaesthesiology Volume: 20 ISSN: 0265-0215 ISO Abbreviation: Eur J Anaesthesiol Publication Date: 2003 Feb |
Date Detail:
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Created Date: 2003-03-07 Completed Date: 2003-12-12 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8411711 Medline TA: Eur J Anaesthesiol Country: England |
Other Details:
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Languages: eng Pagination: 134-40 Citation Subset: IM |
Affiliation:
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University Hospital Hamburg-Eppendorf, Department of Anaesthesiology, Hamburg, Germany. pd.dr.g.von.knobelsdorff@bernward-khs.de |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aorta, Thoracic
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surgery Cerebrovascular Circulation / physiology* Cognition / physiology* Female Hemodynamics / physiology Humans Hypotension / chemically induced* Male Middle Aged Neuropsychological Tests Stents* Ultrasonography, Doppler, Transcranial |
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