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A 4-year-old presents to your clinic with multiple petechiae and bruises overhis entire body. His mother denies any history of trauma but reports he is avery active child. He is currently afebrile, but mom reports he had URIsymptoms about a week ago. Otherwise, his past medical history isunremarkable. Aside from the petechiae and bruises, his exam is otherwisenormal. You order a CBC. Based on the results, the most likely diagnosis is: Hemoglobin 11.4WBC 10.5k with normal differentialPlatelets 20k

A 6-month old fell out of her high chair onto the kitchen floor three hours ago and is brought to the ED by her parents. Parents report no loss of consciousness, vomiting, or seizure activity. She seems increasingly drowsy and has been fussy and refusing feeds. Her physical exam is normal, with the exception of a left frontal hematoma. Which of the following should be considered next in the plan of treatment?

A 9-month-old boy is brought by his parents for evaluation of an abdominal mass that they noticed when changing his diaper. On exam, he appears non-toxic and has a palpable, nontender RUQ mass measuring 4×6 cm. Which of the following studies is most likely to reveal the diagnosis?

A 10-month-old boy present for complaints of “screaming episodes” for the past 24 hours. He appears well except for episodes of screaming with flexion of the hips and knees about every 25-30 minutes. The episodes last < 1 minute and he appears well again right after. He has had 2 episodes of non-bilious vomiting. Parents deny fever, blood in stool or vomit. Vital signs and hydration are normal. On exam, he has hyperactive bowel sounds in the right upper quadrant. His abdomen is not notable tender. Rectal and stool exams are negative for blood. What is the BEST next step in management?

Base pairs in DNA are held together by_________ bonds.

A 3-year-old boy is evaluated by a pediatrician for symptoms of malabsorption. Since age 5-months, he has had bulky, strong-smelling stools with painful abdominal bloating and flatulence after eating breakfast each morning. He is currently eating a normal diet but appears malnourished. On physical exam, his abdomen is distended. If you ordered an intestinal biopsy, which of the following findings would most likely be present?

E. coli bacteria normally live in the human gut and produce vitamin K that the body uses. This is best termed a/an _________ relationship.

The expression of genetic traits is referred to as the organism’s

Human pathogens fall into the group called

A primer comprised of _________ is needed at the origin of nucleotide addition.