Quiz 06/10/2022 (1)

A 55-year-old male cigarette smoker with a past medical history of hypertension and medication non-compliance presents to the emergency room with an excruciating headache and altered mentation. An MRI of the brain is completed and provided below (T2 sequence). Which of the following is the most likely diagnosis?

The trochlear nucleus sends nerve fibers to which of the following muscles?

A 42-year-old man with a longstanding history of chronic alcohol abuse was found down unresponsive in a public park. He was intubated in the field and brought emergently to the emergency room where his blood alcohol level was 0.32%. A chest X-ray revealed aspiration pneumonia. He was admitted to the ICU, sedated, started on broad-spectrum antibiotics, and aggressively fluid resuscitated. On the second day of the hospitalization, the sedative was weaned but the patient remained comatose. An MRI was performed to identify a possible cause of his symptoms. What is the most likely diagnosis?

Which of the following identifies the sigmoid sinus?

A healthy 12-year-old female has a brain MRI performed because of a history of medically refractory headaches. Her imaging is shown below. What is the diagnosis?

Which of the following is a necessary requirement for electrocerebral inactivity (ECI) testing?

A 72-year-old male with diabetes, hyperlipidemia, and tobacco abuse is admitted to the stroke service after he is found to have a left superior middle cerebral artery territory stroke. His EKG on admission showed a normal sinus rhythm. A transthoracic echocardiogram (TTE) is performed. Which of the following findings on TTE would lead to the recommendation of an anticoagulant medication over an antiplatelet medication for secondary stroke prevention?

Submaximal muscle stimulation is used during which of the following aspects of the nerve conduction study?

Which of the following medications are known to develop neutralizing antibodies (NAbs) against it with chronic use?

The pathology slide below is most consistent with which of the following disorders?

A 4-month-old boy is brought by his parents due to difficulty in feeding, and episodes of apnea. Physical examination reveals tongue fasciculations, a bulging anterior fontanelle, and an abducens nerve palsy. MRI reveals an Arnold Chiari malformation type II. What additional defect is this child likely to have?

A 34-year-old woman comes to the emergency room with complaints of neck stiffness, headaches that are worse on standing, and diplopia. An MRI brain with contrast shows diffuse dural enhancement. Which of the following findings is also likely to be present in this case?

Mild cases of carpal tunnel syndrome will have which of the following findings on electromyography (EMG)?

What is the mechanism of action of phenobarbital?

A 55-year-old was recently diagnosed with breast cancer. She required a right mastectomy, lymph node resection, and local radiation. She presents to your clinic with right arm pain and weakness. On exam, she has weakness only to forearm pronation, and flexion at the wrist and biceps. She also has numbness of the lateral hand and the first 3 digits.

Which cord or nerve was likely injured from the surgery or radiation?