A 9-year-old girl presents with dysuria and urinary frequency. She is afebrile and has no flank pain or vomiting. UA shows positive leukocyte esterase and nitrites. She is started on TMP-SMX (Bactrim). Two days later, urine culture grows E. coli>100,000 CFU/mL resistant to TMP-SMX and susceptible to cephalexin and nitrofurantoin. She is still mildly symptomatic.

Which urine culture result best supports the diagnosis of UTI in a symptomatic child with pyuria?

A 6-year-old is brought to primary care with 2 days of cough, nasal congestion, and low-grade fever. He is drinking well, has normal urine output, and is playful in the exam room. His temperature is 37.9°C, oxygen saturation is 99% on room air, respiratory rate is normal for age, and lung exam is clear without wheezing, crackles, retractions, or focal findings. His parent asks whether he needs “blood work or a chest x-ray to make sure it is not pneumonia.” Which response best reflects high-value care?

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/

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 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?

If an egophony test is negative, what sound will you hear through your stethoscope? [sound1] (1 pt) What pathology is indicated in that area of the lung if you hear loud, clear sounds through your stethoscope when the patient repeats “Scooby Doo”? [pathology2] (1 pt) What is the expected finding if a clinician percusses over an area of the lung with pathologically increased air? [pathology3] (1pt) Name two sources of error during auscultation [error4] (1 pt} What condition is indicated if a clinician identifies low-pitched wheezing over an area of the lungs? [condition5] (1 pt)  

Curare causes paralysis ________.

A compound action potential ________.

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 ________.