Brief, resolved, unexplained event (BRUE) Quiz: Ace Your Exams

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6-week-old boy presents to the emergency department for evaluation of an episode of cyanosis and irregular breathingThe mother reports that she had just placed her son in the crib for a nap when she saw him "turn blue with irregular breathingShe states that the patient was behaving normally prior to the episode and returned to his usual state right after. No rhythmic or irregular movements were noted. The episode lasted less than 1 minute. He has had no prior fevers, cough, or congestion. The patient was born at term; pregnancy and birth were uncomplicated. Temperature is 37°C (98.6°F), blood pressure is 92/52mmHg, pulse is 118/min, respiratory rate is 36/min, and oxygen saturation is 98% on room air. On physical examination the patient is well-appearing, sitting in mom’s arms in no distress. The anterior fontanelle is open and flat, mucus membranes are moist, cardiopulmonary examination is within normal limits, and no rashes or ecchymosis are noted. Which of the following is the best next step in management? 

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