A 60-year-old woman is brought to the emergency department by ambulance after suffering a generalized tonic-clonic seizure. The seizure lasted 2 minutes, followed by a short period of unresponsiveness and loud breathing. Her blood pressure is 130/80 mm Hg, the heart rate is 76/min, and the respiratory rate is 15/min and regular. On physical examination, the patient is confused but follows commands and cannot recall recent events. The patient does not present with any other neurological deficits. T1/T2 MRI of the brain demonstrates a hypointense, contrast-enhancing mass within the right frontal lobe, surrounded by significant cerebral edema. Which of the following would you expect in the tissue surrounding the described lesion?
ALoss of endothelial tight junctions
BReplacement of interstitial fluid with cerebrospinal fluid (CSF)
CIncreased intracellular concentrations of osmolytes
DUpregulation of aquaporin-4
EIncreased interstitial fluid low in protein
A 48-year-old man presents to the ER with a sudden-onset, severe headache. He is vomiting and appears confused. His wife, who accompanied him, says that he has not had any trauma, and that the patient has no relevant family history. He undergoes a non-contrast head CT that shows blood between the arachnoid and pia mater. What is the most likely complication from this condition?
AHemorrhagic shock
BArterial Vasospasm
CRenal failure
DBacterial Meningitis
EBlindness
A 65-year-old male prisoner goes on a hunger strike to protest the conditions of his detainment. After 5 days without food, he suffers a seizure for which he is taken into a medical facility. On physical examination, he looks pale and diaphoretic. His blood glucose level is 50 mg/dL. In order to keep a constant supply of energy to his brain, which of the following molecules is his liver releasing into the bloodstream?
AGlycogen
BGlucose-6-phosphate
Cß-hydroxybutyric acid
DFatty acids
EGlucose-1-phosphate
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