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P Brenot

Publications and source records attributed to P Brenot.

6 recordsLinked to original sources
PubMed1990

[Coaxial catheterization with an ultra-flexible catheter (Tracker) in coronary angioplasty].

After experiencing problems of catheterisation during coronary angioplasty, the authors tried using a 3.2 F ultraflexible catheter with a 2.2 F tapered tip. In 2 patients, initial attempts at coronary catheterisation were failures but when this new catheter was used, angioplasty could be performed without any difficulty. This catheter was then used in 4 other patients and in all cases the Tracker enabled the operators to catheterise the coronary arteries and to perform angioplasty in 3 of the 4 cases. Therefore, this new ultraflexible catheter would seem to be a valuable alternative for catheterising particularly sinuous coronary arteries in which angioplasty is often technically difficult.

Adult↗
PubMed1978

[Electrophysiologic aspects of the effects of etomidate in man].

Recordings were electroencephalographical (EEG with spectral analysis), polygraphical (EMG, EKG, breathing). Visual and Auditory Cerebral Evoked Responses were also recorded. The depth of narcosis was quantified upon EEG data. The reactivity during the narcosis and the mechanisms of action of Etomidate on the "non specific structures" are discussed. Cautions should be taken with the use of tomidate in anesthesiology with epileptic and arteriopathic patients.

Adult↗
PubMed1978

[A case of Jakob-Creutzfeldt's disease (form of Heidenhain) electrophysiological, clinical and anatomical correlations (author's transl)].

We report a case of Jakob-Creutzfeldt's disease (amaurotic form of Heidenmain's disease) showing typical clinical, anatomical, microscopic and electrophysiologic (E.E.G, polygraph sleep recordings, Evoked Potential) signs. Changes in visual Evoked Potentials were quite specific whereas Auditory and Somesthesic E.P'. were not modified. Early elements (O, I, II, and III having a latency of less than 100 ms) were strongly developed, while later elements of the associative type were absent. The precociousness and specificity of the E.P. abnormalities are stressed in the differential diagnosis of J.-C's disease from other insanities, or from cortical blindness of other aetiology. The physiopathologic implications of electrophysiological data is discussed to illustrate the possibility of using Evoked Potentials to help resolve the problems of functional cerebral stratigraphy in man.

Aged↗
PubMed1976

[Visual evoked potentials in multiple sclerosis].

A study was carried out of 32 patients suffering from multiple sclerosis the diagnois of which was quite definite according to Mac Alpine's criteria and which had developed over more than two years. Comparison was made with patient suffering from optic neuritis of a different aetiology and with normal subjects. The method of investigation was dynamic electroretinoencephalography : the visual evoked potentials were investigated after stimulation by white and coloured light before and after adapatation to darkness. The specificity of the results was tested by, firstly, electro-retinogram recording for control of the visual system, and secondly, by the recording of auditory evoked potentials for control cerebral function. Abnormalities in visual evoked potentials were found in 77 percent of the cases. In particular, there was delayed latency, that is, a slowing of retino-cortical conduction. The significance of these abnormalities is discussed, by analyzing the electroclinical correlationships according to whether there was obvious or subclinical optic neuritis, and the dissemination, activity or duration of the disease. The incidence of visual evoked potential abnormalities was considerably greater than that in optic neuritis (35 percent). The links between abnormalities in nervous conduction and demyelinisation are emphasized. The role and specificity of electrophysiological investigation in diagnosis of multiple sclerosis are discussed.

Adult↗