Author: Anonymous

A 9-year-old presents with fever, sore throat, tonsillar exudate, and tender anterior cervical lymph nodes. She has no cough. A rapid antigen detection test for group A strep is performed. The test has high specificity but moderate sensitivity.

A 3-week-old infant is brought to the emergency department with a rectal temperature of 38.5°C. The infant is sleepy, feeding poorly, and appears ill. Blood, urine, and cerebrospinal fluid cultures are obtained. The parents ask why antibiotics are being started before the culture results are back. Which explanation best describes the rationale for empiric treatment?

A 10-year-old boy presents with tea-colored urine and mild facial swelling. BP is above the 95th percentile for age, sex, and height. UA shows 3+ blood, 2+ protein, and RBC casts. Nitrites and leukocyte esterase are negative.

A newly graduated nurse practitioner is seeing a 6-year-old with fever, sore throat, headache, abdominal pain, and a diffuse sandpaper-like rash. The NP enters the symptoms into a generative AI tool, which suggests “viral exanthem” as the most likely diagnosis and recommends supportive care. The child is ill-appearing, has palatal petechiae, tender anterior cervical lymph nodes, and no cough Which action best reflects safe and appropriate use of AI in clinical decision-making?

A 10-month-old uncircumcised male presents with fever to 39.3°C for 24 hours. He is well appearing, has no cough, rhinorrhea, vomiting, diarrhea, or rash, and exam does not reveal a clear source of fever. He has no prior history of UTI. Using a pediatric UTI prediction tool such as UTICalc, which clinical decision is most appropriate? UTICalc (Clinical Prediction Tool): https://uticalc.pitt.edu/

In the experiment on stimulation of the isolated sciatic nerve, the compound action potential increases in amplitude with an increase in stimulation voltage. This is due to ________.

The ionic concentrations in the interior and exterior of body cells ________.

The effects of electrical stimulation to the sciatic nerve ________.

The difference between an action potential in a single axon and a compound action potential in a nerve is ________.

In comparing sheep brains and human brains, one notes that, in humans, ________.