EEG/EMG

Question 1

What do you see on EEG of delirium?

Answer 1

• Generalized slow activity consisting of theta and delta waves with focal areas of hyperactivity

Question 2

What do you see on EEG of absence seizures

Answer 2

• 3 per second spike and wave patterns

Question 3

Normal pattern when eyes are closed

Answer 3

Posterior alpha rhythm

Question 4

seizure focsus

Answer 4

Right temporal spikes

Question 5

If the pt is not asleep what should delta waves raise concern for?

Answer 5

a structural lesion

Question 6

Petit mal epilepsy on EEG

Answer 6

classic 3 per second spike and wave pattern

Question 7

Hepatic encephalopathy on EEG

Answer 7

bilaterally synchronous triphasic slow waves

Question 8

EEG of depression

Answer 8

shortened latency of REM sleep, decreased stage 4 sleep, and increased REM density

Question 8

EEG of depression

Answer 8

shortened latency of REM sleep, decreased stage 4 sleep, and increased REM density

Question 9

EEG Creutzfeldt jakob disease

Answer 9

periodic sharp wave complexes (can also be seen with subacutesclerosing panencephalitis)

Question 10

absence seizures

Answer 10

3 per second spike and wave pattern

Question 11

PLED
PERIODIC LATERALIZED EPILEPTIFORM DISCHARGES

Answer 11

herpes simplex encephalitis

Question 12

burst suppression pattern eeg

Answer 12

diffuse brain damage

Question 13

What is characteristic EMG of muscle denervation?

Answer 13

fibrillation potentials
- positive sharp waves are spontaneous muscle activity emanating from groups of denervated muscle fibers

Question 14

EMG myotonia

Answer 14

diver bomber

Question 15

EMG myopathies

Answer 15

small short unit potentials

Question 16

cerebral venous thrombosis

Answer 16

1-4 weeks post partum
headache, seizures, neurological deficits, havioral changes
-hypercoagulable state induced by pregnancy
MRI venography
heparin or thrombolysis

Question 17

EMG demyelinating neuropathy

Answer 17

• conduction block

Question 18

EMG muscle denervation

Answer 18

fibrillation potentials and positive sharp waves

Question 19

als emg

Answer 19

positive sharp wave and fibrillation
reduced neurogenic firing
fasicualtion potentials