Prominent publications by R R Young
EEG was monitored at bilateral scalp sites outside the operative field during hypotensive aneurysm surgery in 21 patients. Mean arterial blood pressure at axillary level was 50-60 mm Hg (average 55 mm) for 1.9-5.3 hours (average 3.6). Four new deficits were noted immediately post-operatively, all related to the operated site: these were attributable to intra-operative rupture with forced vascular clipping, vasospasm, or edema. In no instance was hypotension solely responsible for a new ...
|Also Ranks for: Eeg Monitoring | intracranial aneurysms | aneurysm surgery | induced hypotension | operative site|
Physiological and pharmacological studies of more than 150 patients with movement disorders are reported. Particular attention is paid to the differentiation of various types of tremor on the basis of rate, rhythm, and pattern of EMG activity in antagonistic muscles. The typical 'tremor-at-rest' of Parkinson's disease--3-7 Hz activity which alternates between antagonistic muscles--is suppressed, at least briefly, during voluntary activity, at which time typical 8--12 Hz 'physiological ...
|Also Ranks for: Differential Diagnosis | antagonistic muscles | emg activity | movement disorders | physiological tremor|
Elastic properties of muscles measured at the elbow in man: II. Patients with parkinsonian rigidity.
[ PUBLICATION ]
A method is described to measure reproducibly stiffness, and therefore "tone", at the elbow of patients with Parkinson's disease using a torque motor. In Parkinsonian versus normal patients (previously reported) it was observed that: the neutral angle in Parkinson's disease patients was significantly smaller (92 degrees +/- 15 degrees) than in normals (107 degrees +/- 10 degrees), and in Parkinson's disease patients, even with relatively mild symptoms, the upper limb was stiffer than ...
|Also Ranks for: Parkinsonian Rigidity | upper limb | parkinson disease | 10 degrees | greater passive stiffness|
The usefulness of performing late response studies for the detection of peripheral nerve dysfunction has been demonstrated. It has been shown that significant prolongation of the minimal latencies of the H reflex and the F response is present at a time when conventional methods of motor and sensory conduction do not show an abnormality in individual patients. Abnormalities of late responses have been shown to occur in a variety of peripheral neuropathies with "axonal" as well as ...
|Also Ranks for: Late Responses | peripheral neuropathy | reflex response | aids diagnosis | aged motor|
Results of electroencephalographic monitoring during 367 carotid endarterectomies. Use of a dedicated minicomputer.
[ PUBLICATION ]
Three hundred sixty-seven carotid endarterectomies were monitored using routine electroencephalographic (EEG) techniques. In 9.8%, changes in the EEG followed clamping of the internal carotid artery and could roughly be grouped into 6 patterns. The most common (47%) was rapid unilateral or bilateral attenuation of background anesthetic-induced fast EEG activity. Conclusions drawn from studies of the 9 patients who had immediate postoperative neurological deficits of varying degrees are ...
|Also Ranks for: Monitoring Techniques | cerebral ischemia | 9 patients | carotid artery | cerebrovascular circulation|
Late Pleistocene glacial geomorphology and environment of the Hand Hills region and southern Alberta, related to Middle Wisconsin fossil prairie dog sites
[ PUBLICATION ]
Ichnofossils (burrow casts) and fossils from an extinct form of prairie dog, Cynomys niobrarius churcherii, in the Hand Hills of south-central Alberta, have provided an important Late Pleistocene stratigraphic marker. The marker fossils provide relative and chronostratigraphic (radiocarbon) ages for nonglacial, periglacial, glacial, and glaciotectonic events and environments in the region. The high-elevation, hilltop position of the fossil sites (~200 m above the surrounding plains) ...
|Also Ranks for: Late Pleistocene | laurentide ice | prairie dogs | southcentral alberta | radiocarbon dates|
R R Young: Influence Statistics
|late responses aids||#1|
|parkinsons disease kinships||#1|
|typical tremorat rest||#1|
|familial senile variants||#1|
|characteristic emg pattern||#1|
|irregular myoclonic lapses||#1|
|pauses ongoing activity||#1|
|prolongation minimal latencies||#1|
|late responses variety||#1|
|minimal latencies reflex||#1|
|abnormalities late responses||#1|
|time essential tremor||#1|
|unilateral asterixis patient||#1|
|differential diagnosis tremor||#2|
|sural nerve conduction||#2|
|late response studies||#2|
|abnormality individual patients||#2|
|motor sensory conduction||#3|
|greater passive stiffness||#4|
|differential ethanol humans||#4|
|variety peripheral neuropathies||#5|
|monosynaptic tibial nerve||#6|
|late response latencies||#6|
Key People For Unilateral Asterixis
R R Young:Expert Impact
Concepts for whichR R Younghas direct influence:Unilateral asterixis, Etoposide phosphate, Late responses, Eeg monitoring, Parkinsonian rigidity, Dose etoposide, Blink reflexes, Nerve conduction.
R R Young:KOL impact
Concepts related to the work of other authors for whichfor which R R Young has influence:Brain death, Evoked potentials, Blink reflex, Essential tremor, Carotid endarterectomy, Spinal cord, Movement disorders.
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