EEG NUMBER:

DISC:

REQUESTED BY:

CLASSIFICATION:

MEDICATIONS:

INTRODUCTION:

DESCRIPTION OF RECORD:

IMPRESSION:

CLINICAL CORRELATION:

TERMS USED

K complexes, sleep spindles, standard 10/20 system of electrode placement

Sample Reports

ELECTROENCEPHALOGRAM REPORT    (EEG REPORT)

DATE OF TEST:  05/06/03

REQUESTED BY:  Dr. F.

EEG:  693.

DISK:  A2.

PATIENT CLASSIFICATION:  Inpatient.

CLINICAL FOR EEG:  Two-and-a-half-year-old male with the question of seizures.

PRESENT MEDICATIONS:  None.

INTRODUCTION:  A digital EEG is performed using the standard 10/20 system of electrode placement, with one channel of EKG monitoring.  Neither hyperventilation or photic stimulation were performed as the patient was crying.  It was somewhat agitated during much of the study.

DESCRIPTION OF RECORD:  Throughout the study prominent muscle and movement artifact is seen.  When the patient is briefly calm, some well formed 7 to 8 hertz background is seen over both posterior head regions.  This is in the 60 microvolt range bilaterally.  Some intermix to slower frequencies are noted bilaterally, but this hard to separate from artifact, as much of the time the patient is moving.  Some low amplitude theta activity is seen bifrontally.  During some brief drowsiness, diffuse slowing of the background is noted.  The patient does not pass into sleep, and during most of the tracing is awake.  Neither hyperventilation nor photic stimulation are performed.

EKG:  Shows a regular rate.

IMPRESSION:  Normal EEG for age, and wakefulness, and drowsiness.

CLINICAL CORRELATION:  No lateralized or epileptiform abnormalities were noted.  However, this tracing was somewhat technically limited in that prominent artifacts were seen during much of the record, and no sleep was recorded.

ELECTROENCEPHALOGRAM REPORT    (EEG REPORT)

 DATE OF TEST:  05/06/03

REQUESTED BY:  Dr. T. S.

EEG NUMBER:  703-0.

DISK:  A2.

 PATIENT CLASSIFICATION:  Outpatient.

 CLINICAL FOR EEG:  Episodes of loss of consciousness.

 PRESENT MEDICATIONS:  None.

 INTRODUCTION:  This is a 21-channel digital, sleep deprived electroencephalogram, done according to the international 10/20 system of electrode placement with one channel EKG.  The records were obtained in the awake state, during drowsiness, and with photic stimulation, without hyperventilation.

 DESCRIPTION OF RECORD:  The background consists of up to 6 hertz, up to 40 microvolts, theta activity.  There is no significant hemispherical asymmetry.  There are no seizure discharges.  Photic stimulation does not present any abnormalities.  Stage 2 sleep is not recorded, although the record does show drowsiness at times.  EKG shows regular rhythm.

 IMPRESSION:  This is a normal electroencephalogram.

 CLINICAL CORRELATION:  Normal electroencephalogram that does not rule out the possibility of a seizure disorder.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/22/03

REQUESTED BY:  Dr. C.

EEG NUMBER:  790-03

DISC:  A2

PATIENT CLASSIFICATION:  Outpatient recording.

CLINICAL FOR EEG:  The patient is a three-month-old youngster, with cyanotic spells.

INTRODUCTION:  An awake and sleep electroencephalogram was obtained utilizing International 10/20 system of electrode placement and a 21-channel recording.

DESCRIPTION OF RECORD:  Background activity consists of 4-hertz activity predominating posteriorly, with some degree of intermittent rhythmical slower activity on delta intermix and especially in central and frontal derivations.  This is quite acceptable for age.  Slightly faster rate of rhythms are occasionally seen in posterior quadrants.  With stage 2 asynchronous, but symmetric sleep spindles are identified.  There is no abnormality with arousal.  Throughout the course of the EEG, there are no significant asymmetries.  There are no paroxysmal features.

IMPRESSION:  Normal awake and sleep electroencephalogram. 

CLINICAL CORRELATION:  This electroencephalogram shows no epileptiform features, but in and of itself, such a normal EEG does not rule out the clinical diagnosis of seizure disorder.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/27/2003

REQUESTED BY:  Dr. R.

EEG NUMBER:  808-03

DISC:  A2

PATIENT CLASSIFICATION:  Outpatient recording.

CLINICAL FOR EEG:  The patient has a history of syncopal episodes, question relates to the possibility of seizures.

PRESENT MEDICATIONS:  Aspirin.

INTRODUCTION:  An awake and sleep electroencephalogram was obtained utilizing International 10/20 system of electrode placement and a 21-channel recording.

DESCRIPTION OF RECORD:  Background activity consists of well-developed, well-organized 8 to 9-hertz mid-voltage activity predominating posteriorly, with activation of the alpha rhythm with eye closure. The alpha rhythm is fairly well sustained during the course of the electroencephalogram.  Occasional focal sharp activities is seen in the left central parietal region.  This is matched at some lesser frequency by similar activity in the right hemisphere as well.  However, such sharply contoured activity is far more frequent in the left hemisphere.    Stage 2 sleep is attained and symmetrical sleep spindles and K complexes are noted.  Over ventilation or photic stimulation does not change the basic electroencephalogram.  Indeed, throughout the course of the electroencephalogram, there are no additional asymmetries or paroxysmal features.

IMPRESSION:  Mildly abnormal electroencephalogram due to the presence of occasional sharply contoured data activity, left greater than right central parietal.

CLINICAL CORRELATION:  This electroencephalogram shows some mild irritative abnormalities noted in the left and right central parietal regions, with much more frequency in the left side.  Nonetheless, this slightly irritative activity in and of itself, does not suggest the diagnosis of seizure disorder.  Appropriate clinical context needs to be present for that diagnosis to be made.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/22/03

REQUESTED BY:  Dr. D

EEG NUMBER:  791-73

DISC:  B2

PATIENT CLASSIFICATION:  Outpatient recording.

CLINICAL FOR EEG:  There is a history of possible absence seizures and episodes of “rocking behavior.”

INTRODUCTION:  An awake and sleep electroencephalogram was obtained utilizing International 10/20 system of electrode placement and a 21-channel recording.

DESCRIPTION OF RECORD:  Background activity that is best consists of 4-hertz rhythmical data activity, which eventually evolves into, at best, a 6-hertz, somewhat-lower voltage data activity.  Next data delta activity really marks this record in this youngster, who is literally 15 months of age.  Photic stimulation produces no abnormality.  Stage 2 sleep is obtained and symmetrical sleep spindles and synchronous sleep spindles are noted.  Throughout the course of the study, there are no significant asymmetries or any paroxysmal features.

IMPRESSION:  Normal awake and sleep electroencephalogram.

CLINICAL CORRELATION:  This electroencephalogram shows no epileptiform features, but in and of itself, this EEG does not rule out the clinical diagnosis of seizure disorder.  It is interesting to note that there appears to be one episode of sort of rocking behavior, but it is not clear that this represents the clinical event.  No EEG abnormalities were noted during this episode.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/22/03

REQUESTED BY:  Dr. S.

EEG NUMBER:  787-03

DISC:  B2

PATIENT CLASSIFICATION:  Inpatient recording.

CLINICAL FOR EEG:  Patient has a history of hydrocephalus and a right-sided shunt, with skull defect in the posterotemporal region on the right.  There have been episodes suggestive of possible seizure disorder.

PRESENT MEDICATIONS:  Paxil, trazodone, and Depakote.

INTRODUCTION:  An awake and drowsy state electroencephalogram was obtained utilizing International 10/20 system for electrode placement and a 21-channel recording.

DESCRIPTION OF RECORD:  The background activity that is best consists of a 0.5-hertz mid-voltage activity predominating posteriorly, with activation of the alpha rhythm with eye closure.  This alpha rhythm is fairly well sustained during the course of the electroencephalogram.  In the right temporal region, the background rhythm is, at times, replaced where there is superimposed slightly sharply contoured activity rhythmical that has the appearance of a breach rhythm and probably, represents the underlying skull defect from the hydrocephalus shunt.  Throughout the course of the electroencephalogram, there is no significant additional asymmetries or any paroxysmal features.  Photic stimulation produces no abnormality.  This test was not totally completed as per the patient’s request.  Overventilation produced no changes.

IMPRESSION:  Normal awake electroencephalogram. 

CLINICAL CORRELATION:  This electroencephalogram shows no epileptiform features, but in and of itself, such a normal EEG does not rule out the clinical diagnosis of seizure disorder.  The only asymmetry in the examination appears to be the result of the shunt placement.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/22/03

REQUESTED BY:  Dr. H

EEG NUMBER:  784-03

DISC:  B2

PATIENT CLASSIFICATION:  Outpatient recording with digital recording.

CLINICAL FOR EEG:  Patient has a history of possible seizures.

INTRODUCTION:  Awake and sleep encephalogram was obtained utilizing International 10/20 system electrode placement and a 21-channel recording.

DESCRIPTION OF RECORD:  Background activity at best consists up to 6 mid hertz mid-voltage activity predominating posteriorly.  More frequently 4-hertz rhythms predominate, more perfectly 4-hertz rhythms are noted and some mixed 4-6 hertz data.  Weak drowsiness, with rhythmical 4-hertz activity replaces the background recording.  The record then becomes somewhat low-voltage in character, but eventually stays to sleep supervenes and symmetrical sleep spindles and vertex activity is noted. Throughout the course of the EEG, there are no significant asymmetries or any paroxysmal features.  Overventilation and photic stimulation are performed and show no substantive abnormalities.

IMPRESSION:  Normal awake and sleep electroencephalogram.

CLINICAL CORRELATION:  This electroencephalogram shows no epileptiform features, but in and of itself, such a normal EEG does not rule out the clinical diagnosis of seizure disorder.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/22/03

REQUESTED BY:  Dr. S.

EEG NUMBER:  786-03

DISC:  B2

PATIENT CLASSIFICATION:  Inpatient 8 East, digital recording.

CLINICAL FOR EEG:  Patient has a history of possible complex partial seizures.  There is a history of “emotional distress,” psychotic depression, anxiety, confusion.

PRESENT MEDICATIONS:  Naproxen, Zyrtec, Cogentin, Paxil, Vasotec, Klonopin, Risperdal.

INTRODUCTION:  An awake and drowsy state electroencephalogram was obtained utilizing the International 10/20 system of electrode placement and the 21-channel recording. 

DESCRIPTION OF RECORD:  A background activity that is best consists of up to 10 hertz of low-voltage activity predominating posteriorly.  As the patient seemingly becomes somewhat drowsy, the alpha rhythm actually decreases to 8 and then finally 7 hertz.  Posterior quadrant activity is of low and, occasionally, low to mid-voltage activity.  Throughout the course of the electroencephalogram, there is no significant asymmetries or any paroxysmal features.  Overventilation was not able to be completed because of a lack of cooperation.  Photic stimulation produces no abnormality.

IMPRESSION:  Normal awake electroencephalogram. 

CLINICAL CORRELATION:  Clinical correlation of this electroencephalogram shows no epileptiform features, but in and of itself, such a normal EEG does not rule out the clinical diagnosis of seizure disorder.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/22/03

REQUESTED BY:  Dr. S.

EEG NUMBER:  792-03

DISC:  A2

CLINICAL FOR EEG:  Patient has a history of episodes of transient left sided weakness. 

PRESENT MEDICATIONS:  Zanaflex, propanolol, and Prozac.

INTRODUCTION:  An awake electroencephalogram is obtained utilizing the international 10/20 system of electrode placement and a 21-channel recording. 

DESCRIPTION OF RECORD:  The background activity is basically a low-voltage record.  Throughout the course of the electroencephalogram, there is low-voltage activity and almost-continuous EMG artifact.  There is a good deal of driving, with photic stimulation at multiple frequencies, but throughout the course of the electroencephalogram, there are no significant asymmetries or any paroxysmal features.

IMPRESSION:  Normal awake electroencephalogram.

CLINICAL CORRELATION:  This EEG shows no abnormalities, but in and of itself, such an EEG does not rule out the clinical diagnosis of seizure disorder.

ELECTROENCEPHALOGRAM REPORT

DATE OF TEST:  05/24/03

REQUESTED BY:  Dr. S.

EEG NUMBER:  803-03

DISC:  A2

PATIENT CLASSIFICATION:  24-hour bedside electroencephalogram report.

CLINICAL FOR EEG: 

PRESENT MEDICATIONS:  Phenobarbital and Dilantin.

INTRODUCTION:  A bedside electroencephalogram was obtained utilizing the International 10/20 system of electrode placement and a 21-channel recording.  This is day 2 of monitoring.  The patient is comatose.  The period of actual EEG documentation is between 1422 on 05/25/03 through 1741 05/25/03.

DESCRIPTION OF RECORD:  The record over the period of time noted above consists of monotonous 2.5-hertz delta activity seen in all quadrants and is consistent throughout the entire recorded portion of the record. There is some super-imposed faster activity.  But the 2.5-hertz activity predominates.  Throughout the course of the electroencephalogram there is no significant asymmetries, nor any peroxisomal features.  At times there is seen a somewhat slower 1.5 to 2-hertz delta background activity that becomes prominent, and occasionally intermixed faster data activity is noted superimposed.

IMPRESSION:  Markedly abnormal electroencephalogram due to the presence of diffused generalized slowing, with a quality of excessive delta.

CLINICAL CORRELATION:  This electroencephalogram is consistent with a diagnosis of moderate, severe diffused cerebral dysfunction, the etiology of which cannot be determined by the EEG alone.  No definite epileptiform or focal features are noted.