ABRET Practice Exam Part 2 All Possible Questions and Answers with complete solution

HYPERVENTILATION result - Answer-Hypocapnia: state of reduced carbon dioxide in the blood Photoparoxysmal response - Answer-EEG response to light with spikes, spike-wave discharge and/or intermittent slow waves Input impedance should be - Answer-very high According to the Guidelines, how many bits of resolution is required? - Answer-11 Which of the following is the WORST prognostic feature in the EEG of a comatose patient? - Answermonorhythmic tracing without variability SMALL SHARP SPIKES are also called - Answer-Benign Epileptiform Transients of Sleep (BETS) HYPSARRHYTHMIA shows - Answer-Disorganized, continuous high voltage slow waves with interspersed multifocal spike waves A seizure discharge arising from the right frontal lobe is likely to be characterized clinically by - Answerdeviation of head and eyes What is most important when evaluating the background activity? - Answer-Record the maximal state of alertness High voltage theta or delta waves, commonly seen in children 8-14 years, accentuated by hyperventilation: - Answer-Posterior Slow Waves of Youth (PSWY) A stroke which results in only LEFT leg weakness most likely involves which of the following arteries? - Answer-The RIGHT anterior cerebral arteryRare 6-11 hz negative sharp arciform waves, most commonly seen in adults over 30 years in the midtemporal regions. - Answer-Wickets A prolonged series of generalized convulsions without any period of consciousness between them is referred to as - Answer-status epilepticus What differentiates Lambda and POSTS - Answer-Occurs with eyes open If the Low Frequency Filter is changed from 1 Hz to 5 Hz, how will a 2 Hz slow wave be affected? - Answer-It will be significantly attenuated Creuetzfeldt-Jakob disease EEG shows - Answer-GPDs/GPEDS Mu Rhythm is a frequency of - Answer-8-10 Hz In which of the following conditions are periodic lateralized epileptiform discharges most likely? - Answer-Herpes simplex encephalitis Photic induced epileptiform discharges are most likely associated with - Answer-barbiturate withdrawal Subacute sclerosing panecephalitis is associated with - Answer-Measles Seizures commonly result from withdrawal of which of the following? - Answer-Alcohol At what conceptional age is a delta brush pattern primarily seen? - Answer-32 to 34 weeks An electrographic seizure is characterized by - Answer-Episodic rhythmic activity Which of the following occurs during a typical absence seizure? - Answer-Impaired consciousnessWhat is the term that describes failure of the alpha rhythm to attenuate with eye opening? - AnswerBancaud's Phenomenon INFANTILE SPASMS EEG shows - Answer-Electrodecremental Events Slow sampling rate may cause fast frequencies to appear slower: - Answer-aliasing The polarity convention for EEG states that the deflection is up if input - Answer-1 is more negative than input 2 The EEG pattern of hypsarrhythmia is usually associated with - Answer-infantile spasms An EEG obtained within 24 hours following a closed head injury would be LEAST likely to show - Answerfocal spike activity Excessive beta frequency activity may be the result of which of the following? - Answer-Drug effect TIME CONSTANT - Answer-Low frequency filter Photic stimulation is most effective in evoking epileptiform abnormailties in patients with - Answer-a family history of seizures What normal activity would be seen most prominently at the C3 or C4 electrode postion? - Answer-Mu Patients with temporal lobe epilepsy may display ictal automatisms, which are: - Answer-Stereotyped, repetitive movements, such as lip smacking or rubbing fingers together Which of the following infectious diseases is most frequently associated with periodic complexes in the EEG? - Answer-Herpes simplex encephalitis What is most useful when determining localization and polarity? - Answer-montageHYPNAGOGIC HYPERSYNCHRONY - Answer-can be present during arousal state transitions, both prior to sleep and onset and following arousal Which of the following is abnormal? - Answer-asymmetric attenuation of the alpha activity Alpha coma is most often seen following: - Answer-cardiac arrest Mu Rhythm is located ... - Answer-C3/C4 Hyperventilation should be done at a rate of: - Answer-20 breaths per minute Which neurologic syndrome may be associated with focal epilepsy? - Answer-Tuberous Sclerosis Complex Which of the following is characteristic of active sleep in a neonate? - Answer-Frequent movements Photoparoxysmal responses are characterized by: - Answer-Generalized irregular spike and wave discharges or polyspike and wave bursts A common electrographic correlate of a seizure: - Answer-Rhythmic activity Which of the following patterns is characteristically eliminated by movement of a limb? - Answer-Mu rhythm Which is the most important when evaluating background frequency? - Answer-wakefulness and age When using the average reference, if a spike-and-wave focus appears at C3, the abnormality would be best enhanced by - Answer-Excluding C3 and surrounding electrodes from referenceIn the majority of patients with arterial hypertension and acute pure motor hemiplegia, and EEG with MOST likely show - Answer-normal activity Which of the following represents an abnormal EEG pattern? - Answer-Alpha frequency of 9 Hz in O1 and 11.5 Hz in O2 What is the electrical abnormality associated with Breach rhythm? - Answer-A focal low impedance pathway through the skull Seizures with visual hallucinations such as flashing lights are most likely to arise from the : - Answeroccipital lobe Atypical Photic Response - Answer-Delta Driving Which of the following stumuli is most likely to be a trigger for Reflex Seizures? - Answer-Writing At therapeutic levels, phenytoin causes what kind of EEG findings? - Answer-No change