Prognostic value of multimodality evoked potentials in patients with severe coma of differing aetiologies

s5

mapping (IBM).

Up to 16 EIX

time using the first unit. epoch selection spectral

derivations

Different

can also be performed density

function

evolution of EEG therefore

is estimated

clinical

produce the image on the TBM on a two-dimensional

are located.

levels of quantiration

The

power

The

time can

domain analyses are and application.

To

of the head. Parameters

to estimate

The

permits

with type I; 80% with type 2; 100% with type 3. In conclusion BAliI’s were

best

predictor

population

the

of

comatose

differential

sensitivity

groups.

The

of

unfavourable

patients.

of each modality

combination

of

outcome

Our

findings

in the

in the individual

alterations

a

actiological

in multimodality

evoked

response seems to suggest an individual profile for each specific patient. An

assessment

combination

of

the

significance

prognostic

of alterations

is currently

of

the

individual

in progress.

like EEG

index arc mapped

the values at points where no

mapping

values are exhibited

the

design

of

systems

IBNGTERM

EEG AND

(LTM) IN EPILEPSY

ECG MONITORIN<:

AND EPISODIC PHENOMENA.

using 14

with

D. Bar&n,

Z. Sabaka, I. Brezny and I>. Buranova

different

as well as rapid system upgrade by adding new units for

(Centre

for Stroke and CVD.

Bratislava,

Czechoslovakia)

tasks. Many factors can influence the amount

EI,ECTRODIA<:NOSTIC

STUDIES

IS MYASTHENIA

GRAVIS.

clinical

the degree of alertness during the day and

and quality of sleep during the night.

and

subclinical

symptoms

of

‘lhe occurrence

short-term

disturbances

consciousness can be enhanced or suppressed depending Z.G.

general

also document

unit, a basic 20x27 grid is superimposed

and assigning a colour pattern of 2x2 pixels. The

approach

configurations

in real-

scale and

unit.

rate and power proportionality

using a spatial interpolation

different

unit.

on the SA

interpretation

projection

rhythm, theta/alpha

modular

on the DIXG

Both time and frequency

to facilitate

electrodes

amplitude

spectra. using compressed spectral arrays (CSA),

be displayed.

performed

can be monitored

montages,

Bo,gcrbaldo, S. Lim-LopeT,

L.D.

Renales.

CM.

Danguilan,

M.C.

Perc7.

vigilance.

Typical

arrhythmia,

examples

of such symptoms

College of Medicine.

Manila,

Philippines)

and monitor I:EG normal

Serial repetitive

nctve stimulation

of the ulnar or lateral

peroneal

facial nerves was performed

at one to several weeks intervals

patients

clinically diagnosed

as having myasthenia

frequent

type of response (62.5%)

to the 5th response. There A minimum decrement

The

most

of the 2nd

were 5 other patterns of response obtained.

of 11.8% was significant at the 95% level. After

4-minutes

nerve

compound

muscle action potentials

stimulation,

show no decrement

gravis.

was an early decrement

or

on 69

the

decrement

or

increased.

or increment

increment

of

the

There was a tendency to

when the patient

became symptom-

of

on the state of

are epilepsy,

cardiac

sudden drop of blood pressure and others.

To establish such interaction, (University

of

it is necessary to record day and night,

activity

and IXG

as well as blood pressure during the

life-style.

The patient material

described consists of 387 patients divided into

the following 3 groups: 1 - a clear diagnosis of epilepsy; 2 - suspected epilepsy, 3 -short-term

disturbances of consciousness of unknown origin.

The aim of the study was to answer the following epilepsy in patients with unclear or probable what is the frequency of epileptic LEG

1 - can

and how does this compare with the frequency

of clinical seizures; 3 I

and others).

(cardiac arrhythmia,

The

following

methods

free and when they went into stable remission (no symptoms and no

were used: 1 - 3 activating techniques: a) the sudden discontinuation

medication).

anti-epileptic

drugs, b) sleep deprivation,

2 - cassette recording

of EEG

2 -

activity during a 24 hour period

what is the frequency of other episodic phenomena sudden drop of blood pressure

questions:

epilepsy be confirmed;

c) pharmacological

of

activation:

and EC<;.

In the cases with epilepsy, only 18.5% specific epileptic I;l:G changes PROGNOSTIC

VALUE

POTENTIALS

OF

IN PATIENTS

.MULTIMODALITY

WITH

SEVERE

COMA

EVOKED

were found, the rest were normal

OF DIFFER:NG

AETIOLOGIES. A. Burelli, R. Proietti.

A. Arcangeli,

R. Calimici,

M. Valente

and G.1,.

Gigli

or non-specific.

‘Ihe rate of specific

episodic findings increased after sleep deprivation

in 24%, but the rate

of such findings in LTM

was 42.0%

was 72hrs.

between

Correlation

(P > 0.05). clinical

Ihe

seizures

time of recording and episodic

discharges shows significant valuable results in I,TM. observed

interesting

results

regarding

the

time-course

of epileptic

discharges over 24 hours and propose a diagnostic therapeutic (Universita

Cattolica

Multimodality (GCS

del S. Cuore,

evoked potentials

6) admitted

haemorrhage,

to our

(CII)

(14)

Rome, Italy)

1111G

The authors have program

which can improve validity in the diagnosis of episodic phenomena.

were studied in 46 comatose patients

ICU

for head injury

ischemic-anoxic

(III)

(19),

encephalopathy

cerebral

(IAE)

(7)

NEUROPHYSIOLOGICAL ADMINISTRATION

CHANGES

FOLLOWIN<;

CIIRONIC

OF CARRAMAZEPINE.

ischemic stroke (S) (4), neoplasm (2). Evoked responses obtained in all patients included brainstem auditory auditory

potentials

(MLAEPs)

Our purpose was to compare the entire

series of patients

Recordings were performed

potentials (BAEPs),

and somatosensory

Prognosis was evaluated

(1983)

were

the event. utilized

percentage of mortality with type I was (III L4E 80%). CtI

The percentage

85.7: L4E

100%

significance,

independent

classes (1 =N20

bilaterally

3= N20 not identifiable

R. Rocchi. S. Rossi, R. Cioni, S. Passer0 and

C. Paradiso in

groups.

on the basis

Morphological

classes

to classify BAEPs. 11.5%; S 0.0%;

MLAEPs

among types III, demonstrated

of aetiology. identifiable;

bilaterally).

66.3:

IV and V was

a poor

prognostic

SEPs were also divided 2=N20

The

CH 69.2%;

of mortality with type II was 76% (III

100%~). The mortality

in all pathologies.

aetiological

N. Barficrini, F’. Giannini,

(Institute

for Nervous and Mental

Disease, University

of Sienna, Italy)

within the first or second day following the

of survival after 3 months following by Mjoen

(XI’s).

the prognostic value of each modality and in the different

event leading to brain damage. proposed

middle latency

potentials

identifiable

in 3

unilaterally;

There was 56% mortality associated

In order to evaluate the neuropathic carbamazepine studied

(CBZ)

10 patients

generalised neurological

(6

M,

during At

41’ mean

signs. A neurophysiological NCVs

from

before starting the treatment

which

therapeutic

and central

of

nervous systems we

age 32.4

years)

affected

by

convulsive seizures in the absence of an organic lesion or

limbs, sensory and motor performed

effects of chronic administration

on peripheral

CBZ

blood

examination upper

(SEPs from upper

and lower

limbs) was

and after 18 months of therapy,

concentration

was

maintained

within

range.

follow-up

several

neurophysiotogical

parameters

showed

a