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Biomedical subjects

R Gil

Publications and source records attributed to R Gil.

244 records · Page 14Linked to original sources
PubMedDate not supplied

[Brief losses of consciousness of unknown origin. The contribution of echocardiography and of Holter monitoring].

67 patients presented with a syncope of unknown origin following the usual exploration and were the subject of a more elaborated study: echocardiography (echo 2D) and Holter. 3.5 per cent of the Holter recordings enabled to ascribe to the heart the cause of the syncope. More than half of the Holters disclosed abnormalities of the cardiac rhythm leading to an anti-arrhythmic therapy in some cases, even when the cardiac origin of the loss of consciousness (LC) could not be confirmed. Echocardiograms could not lead to the diagnosis and less than one fourth of them disclosed abnormalities. In a developing study (14.8 +/- 8.7 months) that was carried out, 3 out of 4 patients did not present with any more LC; 3 died (6%) and 9 (18%) had LC again. On the other hand, in 5 patients (10%) a diagnosis could be evoked at the end of this follow-up. This study confirms the difficulties of diagnosis of this group of syncope of unknown etiology, as evidenced by the low results of intense and costly explorations and the little information obtained, even after a follow-up of more than 1 year.

Adult↗
PubMedDate not supplied

[Spinal cord metastasis of a glioblastoma].

Two years after surgery followed by chemotherapy and radiotherapy of a temporal glioblastoma, a 51 year-old woman presented pluriradicular symptoms ascribed to compression of the left part of the cauda equina. The second operation confirmed the metastatic nature of the compression, and histological investigation proved the similarity of the neoplastic tissues taken from the medullary and cerebral regions. The authors stress the rarity of the clinical forms of medullary metastases of glioblastomas. The factors conducive to this fluid effusion are trauma and ventricular effraction by the original tumour. Neither screening nor prophylactic irradiation seem necessary in view of the low frequency of these metastases.

Brain Neoplasms↗
PubMedDate not supplied

[Blink reflex and stimulus detection by the facial nerve in 21 diabetics. Testing before and after precise blood sugar normalization by the artificial pancreas].

Study of the blink reflex and stimulodetection of the facial nerve in 21 diabetics with chronic hyperglycemia (HbA1C: 12.17 +/- 2.34%) shows normal or slightly prolonged R1, R2 and M latent periods in most cases. Forty-eight hour metabolic correction by artificial pancreas produces an overall improvement in the latent periods of the blink reflex, while the motor latent period of the facial nerve remained unchanged. The improvement, also observed in studies of limb responses, points towards a metabolic process directly related to the hyperglycemia.

Blinking↗
PubMedDate not supplied

[Electrologic syndromes of alteration of elicited blink reflex in multiple sclerosis. Study of a group of 33 patients (author's transl)].

The study of the blink reflex, performed in a group of 33 patients with multiple sclerosis show, as Kimura (1970) and Namerow (1973) had established, the high frequency of its alterations in this disease (almost half of the cases). The alterations of blink reflex don't depend on duration of illness; if it is true that the alterations of blink reflex are more often observed in patients with clinical symptoms of involvement of brain-stem (and particularly of pons), in some cases, only the alteration of the blink reflex suggests a brain-stem's lesion and helps to establish the diagnosis. The diversity of sites of lesions induced by multiple sclerosis in the brain-stem explains the diversity of blink reflex alteration's syndromes since they correspond to the (almost) totality of the semiology of blink reflex.

Electrophysiology↗
PubMedDate not supplied

[Neurologic adverse effects of piperazine].

Piperazine has been used since the end of the nineteenth century as a urine alkalizing agent in gout and more widely in the past thirty years for its antihelmintic properties. It is known for being well tolerated and of low toxicity. However, there are cases, sometimes in particular circumstances, where piperazine causes severe and impressive neurological disorders, which can be totally reversed if the medication is discontinued. The disorders are accompanied by consistent, but similarly reversible, electroencephalographic changes. The etiopathogenesis of these accidents caused by piperazine is discussed.

Aged↗
PubMedDate not supplied

[Blink reflex and jaw reflex in neurinoma of the acoustic and trigeminal nerves (author's transl)].

The blink reflex was studied in four patients with neurinoma of the acoustic nerve and in two patients with trigeminal neurinoma. It was abnormal in all cases except in one neurinoma of the acoustic nerve inside the canal. The jaw reflex, studied in four cases, showed unilateral impairment in two cases of trigeminal neurinoma and one case of acoustic neurinoma; it was normal in the case of acoustic neurinoma in the canal. The blink reflex and jaw reflex merit inclusion among the further tests conducted in cases of suspected neurinoma of the trigeminal or acoustic nerves. However, they are of less interest than oto-vestibular tets in the early diagnosis of neurinoma of the eighth nerve. These techniques deserve a place of choice in investigations of atypical facial neuralgia in general and suspected neurinoma of the trigeminal in particular.

Adult↗