system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 5-year-old boy is brought to his physician by his mother for the evaluation of increased bruising for 3 weeks. The mother reports that the patient has also had two episodes of nose bleeding in the last week that subsided spontaneously within a few minutes. The boy was born at term and has been healthy except for an episode of gastroenteritis 5 weeks ago that resolved without treatment. The patient is at the 48th percentile for height and 43rd percentile for weight. He appears healthy and well nourished. His temperature is 36.5°C (97.7°F), pulse is 100/min, and his blood pressure is 100/65 mm Hg. There are a few scattered petechiae over the trunk and back. The remainder of the examination shows no abnormalities. Laboratory studies show:
Hemoglobin 12.5 g/dL
Mean corpuscular volume 88 μm3
Leukocyte count 9,000/mm3
Platelet count 45,000/mm3
Red cell distribution width 14% (N=13%–15%)
A blood smear shows no abnormalities. Which of the following is the most appropriate next step in the management of this patient?"
assistant
Observation