Der Vertebralis-Kompressionstest

Noninvasive angiography for the diagnosis of vertebral artery disease using Doppler ultrasound (vertebral artery Doppler).

“…It is not without danger and should be performed only by a trained person, but it can be justified in most patients because of the low rate of risk of minor complications. 18 '" The vertebral artery compression test of Kendel 18 has not proved to be of any value in our procedure, since it can be performed only in patients with a thin neck and does not help to discriminate between vertebral and other extracranial vessels.…”

“…18 The examination was performed with the patient in a supine position. Aquasonic 2,000 gel served as the impedance adaptation between the mucous membrane of the dorsal oropharynx and the ultrasound crystals.…”

“…Noninvasive methods such as ultrasound pulse echo registration, rheographic exploration, electronic sector scanning, or percutaneous Doppler measurements in the region of the mastoid have not yet proved to be of clinical relevance. 18 Either the reliability of these methods is poor or the requirements of time and equipment are too high to be used as screening procedures. The diagnosis of vertebrobasilar disease with screening methods is further complicated by frequent anatomical variations in the vertebrobasilar system.…”

“…In this paper we describe a procedure in which the bidirectional continuous-wave Doppler ultrasound system described in a previous paper is used. 18 The ultrasound probe of the Parks 806 Doppler device (Parks Electronic Laboratory, Beaverton, Oregon) was placed manually on the mucous membrane of the oropharynx between two transverse processes. Gag reflexes were controlled by local anesthesia previously sprayed into the pharynx.…”

“…Stenoses due to cervical spondylosis also have been reported to cause intermittent vertebrobasilar insufficiency. 18 In a normal hemodynamic situation, diastolic flow in all four major cerebral vessels never reaches zero during any phase of the cardiac cycle. severe aortic insufficiency.…”