Portal de Periódicos da CAPES

Carotid duplex scanning: Patterns of referral and outcome

1995; Elsevier BV; Volume: 10; Issue: 4 Linguagem: Inglês

10.1016/s1078-5884(05)80173-x

1532-2165

Jeremy Perkins, J Collin, Jackie Walton, Linda Hands, Peter J. Morris,

Intracranial Aneurysms: Treatment and Complications

Review of the results of carotid Duplex scanning.Retrospective review of new referrals for carotid Duplex scanning to a regional vascular laboratory.1041 referrals made over an 18 month period.Referrals were reviewed for scan quality, diagnostic category and outcome of scanning.The overall detection rate of ipsilateral stenoses > 70% and occlusions was 13.5%; the detection rate of surgically significant carotid lesions (70-99%) was only 8%. Analysis by diagnostic category revealed a significantly greater detection rate for carotid lesions > 70% in patients presenting with amaurosis fugax (24%) in comparison to those with TIAs (9.5%, p = 0.0005) or following a stroke (13%, p = 0.01). Patients referred with asymptomatic bruits or prior to cardiac surgery showed a positive scan rate of 30%. Sixty-seven carotid endarterectomies have resulted from scans performed in this period.The overall rate of detection for surgically relevant lesions is low, but in comparison to a similar audit conducted in 1992, the absolute number of carotid lesions > 70% has risen by 60%. An 8% detection rate for surgically relevant lesions may be valuable in projecting the need for carotid endarterectomy arising from a given number of Duplex scans.