Search PubMed⌕ Search

Biomedical subjects

M Revol

Publications and source records attributed to M Revol.

At least 145 records · Page 8Linked to original sources
PubMedDate not supplied

[Diagnostic and prognostic value of the EEG in the immediate aftermath of cranial trauma].

The authors studied the EGGs of 262 cases of post-traumatic coma and drew the following conclusions: 1. If the EEG shows sleep activity immediately after cranial trauma, the prognosis is generally good. 2. The existence of electrical reactivity to sensory stimulation is a favourable sign and examination of the symmetry of reactions often demonstrates a focal lesion which is not otherwise apparent. However, the absence of localizing signs in the EEG does not necessarily preclude the existence of an intracranial focal lesion; nor do signs of focalization necessarily confirm the existence of a lesion. 3. In equivocal cases, the echo-EG and arteriography should be contemplated. 4. Focal irritative abnormalities in an elderly patient suggest a very poor prognosis. 5. A recording which implies mtabolic disorder should prompt the immediate search for the causal disturbance. If correction of the metabolic disturbance is not followed by rapid improvement of the EEG, the prognosis is very unfavourable. 6. A focal lesion associated with the coma will affect the prognosis but surgical correction of the lesional effects may also get rid of the disturbances of consciousness.

Adolescent↗
PubMedDate not supplied

[An electroencephalographic study of the foetus during labour. Technique and interpretation (author's transl)].

The authors report their experiences in recording foetal E.E.Gs at the time of labour, based on 140 studies. They studied normal E.E.Gs and emphasise the existence of a sleep-waking pattern during dilatation. They consider the E.E.G. changes during the different stages of labour and assess the results against other techniques used to assess foetal well-being. They record the effects on the E.E.G. of various anaesthetics and analgesics given to the mother. The difficulty of the technique is stressed and they conclude that despite the obvious interest of the technique it is not currently suitable for routine obstetric practice.

Alfaxalone Alfadolone Mixture↗
PubMedDate not supplied

[Distribution of respiratory arrests in preterm and term infants (author's transl)].

Incidence, distribution and periodicity of respiratory arrests larger than or equal to 2 seconds duration were studied in relation to age and sleep states by means of polygraphic recording in 61 tracing of 44 preterm and term infants free of pathologic conditions known to increase the risk of respiratory arrests. Respiratory arrests at any infant's age were found to be more frequent during active sleep. Incidence of respiratory arrests decreases with age in all sleep states. At any age the average duration of respiratory arrest is longer in quiet sleep. When restrictive definition is applied periodic breathing was found to be a rare and probably an abnormal phenomenon not in connection with any particular sleep state. Apneas of longer than 10 seconds duration were observed rather seldon, as well as cardiac slowing coinciding with respiratory arrest or apnea. Bradypnea and poor differenciation of breathing pattern according to sleep states represent a rare and presumably abnormal finding. The authors feel that the elements observed should be considered in estimating the risk of severe apnea in infants.

Age Factors↗
PubMedDate not supplied

High signal intensity on T2-weighted MRI correlates with hypoperfusion in temporal lobe epilepsy.

Single-photon emission computed tomography (SPECT) and [99mTc]HMPAO were used to assess the functional significance of nonspecific magnetic resonance imaging (MRI) abnormalities observed in patients with temporal lobe epilepsy and no focal lesion on CT scan. We studied 18 patients whose MRI was normal or showed high signal intensity on T2-weighted images (T2WIs) at the site of the EEG focus in 11 and 7 cases, respectively. EEG was monitored during regional cerebral blood flow (rCBF) study. Lateralized hypoperfusion was present in 7 of 17 interictal (41%) and in one postictal cases; it was located in the temporal lobe on the side of the EEG focus in all, and was significantly more frequent in patients with high signal intensity on T2WI (86%) than in patients with a normal MRI (18%). The degree of temporal perfusion asymmetry measured in each individual was higher in patients whose MRI was abnormal.

Adolescent↗