A patient with a history of atrial fibrillation presents to the ED with sudden onset of dysarthria and left arm weakness beginning one hour ago. A noncontrast head CT scan reveals ischemic stroke in the middle cerebral artery. According to the American Heart Association and American Stroke Association guidelines, which of the following contraindications would need to be corrected before administering intravenous tissue plasminogen activator (tPA)?

What vessel is most commonly affected in ischemic stroke?

Which type of jetstream can be expected to cause the greater turbulence?

The most probable reason an engine continues to run after the ignition switch has been turned off is

The Food and Drug Administration issued which of the following black box warnings for metformin?

A 38-year-old woman with no medical history is brought into the emergency department following a witnessed generalized tonic-clonic seizure. On arrival, the patient has two additional generalized tonic-clonic seizures approximately four minutes apart. The patient remains unresponsive between seizures. Which of the following is the most likely diagnosis?

Which of the following best describes the most common symptoms of acute human immunodeficiency virus infection?

Which neurotransmitter is affected in Parkinson’s disease?

Which of the following lab values would confirm the diagnosis of adrenal insufficiency?

A male patient with type 1 diabetes comes to the clinic complaining of feeling nervous and clammy. He states that he took his insulin this morning but was late for work and did not eat breakfast. Which action should the clinician take first?