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Titolo:
Transcranial Doppler findings during balloon test occlusion of the internal carotid artery
Autore:
Bhattacharjee, AK; Tamaki, N; Wada, T; Hara, Y; Ehara, K;
Indirizzi:
Kobe Univ, Sch Med, Dept Neurosurg, Chuo Ku, Kobe, Hyogo 6500017, Japan Kobe Univ Kobe Hyogo Japan 6500017 g, Chuo Ku, Kobe, Hyogo 6500017, Japan
Titolo Testata:
JOURNAL OF NEUROIMAGING
fascicolo: 3, volume: 9, anno: 1999,
pagine: 155 - 159
SICI:
1051-2284(199907)9:3<155:TDFDBT>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
BLOOD-FLOW VELOCITY; XENON-ENHANCED CT; STUMP PRESSURE; STABLE XENON; STROKE RISK; ENDARTERECTOMY;
Keywords:
transcranial Doppler; carotid artery; balloon test occlusion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
29
Recensione:
Indirizzi per estratti:
Indirizzo: Tamaki, N Kobe Univ, Sch Med, Dept Neurosurg, Chuo Ku, 7-5-1 Kusunoki-cho,Kobe, Hyogo 6500017, Japan Kobe Univ 7-5-1 Kusunoki-cho Kobe Hyogo Japan 6500017 017, Japan
Citazione:
A.K. Bhattacharjee et al., "Transcranial Doppler findings during balloon test occlusion of the internal carotid artery", J NEUROIMAG, 9(3), 1999, pp. 155-159

Abstract

The authors performed transcranial Doppler ultrasonography (TCD) during internal carotid artery (ICA) balloon test occlusion (BTO), and observed changes in mean flow velocity (Vm) in the middle cerebral artery (MCA), and pulsatility index (PI) while monitoring the stump pressure (Sp) of the internal carotid artery (ICA), and neurologic findings. A group of 17 patients requiring possible temporary or permanent occlusion of the ICA in the course of planned procedures first underwent BTO. A patient who either developed neurologic changes or maintained less than 60% of preocclusion Sp or Vm in the ipsilateral MCA during BTO was considered to have a positive test. Elevenpatients had negative results, while in six patients, tests were positive. Mean flow velocity showed a decrease after occlusion in all cases but not to a remarkable extent in some patients. Stump pressure decreased in all negative cases after balloon inflation and than tended to increase progressively during 15 minutes of BTO. Pulsatility index tended to decrease gradually during BTO in all negative patients. However, in positive cases, PI and Sp fell steeply. Only one positive case had a neurologic symptom of severe headache. The decreased PI in the MCA reflected autoregulatory dilation of cerebral vessels to compensate for decreased absolute cerebral blood volume following ICA occlusion. Changes in PI are a good indicator for evaluating blood flow during BTO.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 21:17:57