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Titolo:
ORBITAL COLOR DOPPLER IMAGING IN CAROTID OCCLUSIVE DISEASE
Autore:
MAWN LA; HEDGES TR; RAND W; HEGGERICK PA;
Indirizzi:
NEW ENGLAND EYE CTR,750 WASHINGTON ST,BOX 450 BOSTON MA 02111 NEW ENGLAND EYE CTR BOSTON MA 02111 TUFTS UNIV,DEPT FAMILY MED & COMMUNITY HLTH BOSTON MA 02111
Titolo Testata:
Archives of ophthalmology
fascicolo: 4, volume: 115, anno: 1997,
pagine: 492 - 496
SICI:
0003-9950(1997)115:4<492:OCDIIC>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
OCULAR HEMODYNAMIC-CHANGES; ISCHEMIA; ENDARTERECTOMY; PREVENTION; STENOSIS; ARTERIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
L.A. Mawn et al., "ORBITAL COLOR DOPPLER IMAGING IN CAROTID OCCLUSIVE DISEASE", Archives of ophthalmology, 115(4), 1997, pp. 492-496

Abstract

Objective: To define orbital circulation abnormalities identified by color Doppler imaging in patients with severe carotid occlusive disease. Patients: Twenty-four patients referred to a hospital-based neuro-ophthalmology service with hemodynamically significant carotid occlusive disease (>75% stenosis) were prospectively studied. Eight had signs of ocular ischemic syndrome; 12 of the 24 patients underwent endarterectomy. Main Outcome Measures: Peak systolic velocity of the central retinal, posterior ciliary, and ophthalmic artery and pulsatility indexes as determined by color Doppler imaging. Methods: Color Doppler imaging was performed using a 7.5-MHz probe. Both eyes were studied in all patients and carotid duplex imaging was obtained. Results: All patients with hemodynamically significant carotid occlusive disease had lowermean peak systolic velocities in the central retinal, posterior ciliary, and ophthalmic arteries and higher pulsatility indexes compared with normal control patients. Endarterectomy improved peak systolic velocities. Reversal of ophthalmic flow direction as a separate variable was unassociated with altered mean central retinal or posterior ciliaryartery flow velocities. Patients with ocular ischemic syndrome may have similar orbital color Doppler imaging findings compared with patients with severe carotid occlusive disease without overt manifestations of chronic ocular ischemia. Conclusion: Orbital circulation is highly adaptable even when faced with severe compromise in proximal blood flow.

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Documento generato il 02/12/20 alle ore 17:55:43