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Basics of Neurology MCQ - Multiple Choice Question and Answer

Basics of Neurology MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 15
Topic: Brain Death
Subject: Medicine
A 57-year-old white male with coronary artery disease suffered a cardiac arrest while jogging 10 days ago. He was resuscitated after 45 minutes but has remained unresponsive and on a ventilator since then.
Which one of the following is required to diagnose brain death in this patient?

Hypothermia
Continuous mechanical ventilation
The absence of spontaneous body movements
Electroencephalographic confirmation

Question No : 16
Topic: Brain Death
Subject: Medicine
A 30 year old man has been on life support systems for the past 48 hours following blunt head trauma. Brain death cannot be established in this patient if there is the presence of which of the following?

Carotid blood flow
Cremasteric reflexes
Elevated serum aminoglycoside concentrations
Hypothermia

Question No : 17
Topic: Cholinergic Toxidrome
Subject: Medicine
A 37 year old male arrives at the Emergency Department unconscious. He is warm and sweaty. His heart rate is 52 bpm, his BP is 90/60. His pupils are constricted, his eyes are teary, and he is drooling. You assume he is suffering from a toxidrome.
What antidote will you give him?

Flumazenil
Naloxone
Glucagon
Atropine

Question No : 18
Topic: Foot Drop
Subject: Medicine
During the physical exam of a patients foot, you notice an inability to dorsiflex. What nerve root(s) is most likely affected?

T12
L1
L2
L4 - L5

Question No : 19
Topic: Huntington disease
Subject: Medicine
A 42-year-old white male is brought to your department by his wife because of the progressive loss of his mental abilities, irritability, and some irregular involuntary movements of his hands. She says that she can remember when they were newlyweds, her husbands father had a similar condition at the age of 45 and he died few years later because there was not much doctors could do for him back then. She wants to know if their children may eventually develop a similar condition in the future. None in her family has ever had this type of condition. Which of the following would be the most appropriate answer?

Only their male children are at risk
If one child develops the disease, siblings are not at risk
All their children will inherit the disease
Each child has 50% risk of inheriting the disease

Question No : 20
Topic: Normal Pressure Hydrocephalus
Subject: Medicine
A 76-year-old male is brought to your office by his son. The patient complains of dizziness that has slowly been worsening over the past year. His description is vague, but he says that he notices the dizziness when he tries to walk. The review of systems is normal, except for increasing problems with his prostate in the last 6 months, with dribbling and accidents at times. The patient admits to going more often, and sometimes without warning. The son states that his father seems more forgetful, slower of speech, and not as full of life as he used to be. A neurologic examination reveals the patient to be oriented x 3, with a somewhat flat affect and a wide-based, slow, shuffling gate. The examination is otherwise normal. His Mini-Mental State Examination (MMSE) score is 22 out of 30. No tremor is noted. A CBC, creatinine level, TSH level, vitamin B12 level and VDRL are all normal.
Which one of the following should you do next?

Order a brain MRI
Prescribe sertraline (Zoloft)
Prescribe carbidopa/levodopa (Sinemet)
Order physical therapy

Question No : 21
Topic: Essential Tremor
Subject: Medicine
A 66 year old white female consults you because she has developed a tremor of her right hand that interferes with her ability to do needlework. She has noticed that the tremor improves when she rests her hands in her lap and gets worse when she holds them up against gravity. She has developed a slight quiver to her voice as well. Her symptoms started gradually over 6 months ago and have progressed slowly. She remembers her mother having similar problems in her later years. She takes no medications, and her physical examination corroborates her history. No other abnormalities are noted. A multiple chemistry screen and TSH level are normal.
Which one of the following is most likely to alleviate her tremor?

Propranolol (Inderal)
Paroxetine (Paxil)
Carbidopa/levodopa (Sinemet)
Bromocriptine (Parlodel)