An adolescent with type I diabetes returns for a follow-up v…

An adolescent with type I diabetes returns for a follow-up visit after his annual check-up last week. You note that his serum glucose is elevated and his glycosylated hemoglobin (hemoglobin A1C) is 16.7%. This finding suggests poor control of his diabetes over at least which of the following time periods?

You have been following a 9-year-old child in your office fo…

You have been following a 9-year-old child in your office for the past several years and have noted that during the past year, his height has remained below the third percentile. You are concerned about his short stature and decide to begin a work-up. Your workup includes a bone age determination. The patient’s bone age is discovered to be 3 years younger than his chronologic age. Which of the following diagnoses should be considered?

An ill-appearing 9-week-old baby girl is brought to the emer…

An ill-appearing 9-week-old baby girl is brought to the emergency room. She is pale and dyspneic with a respiratory rate of 80 breaths per minute. Heart rate is 195 beats per minute, heart sounds are distant, a gallop is heard, and she has cardiomegaly on x-ray. An echocardiogram demonstrates poor ventricular function, dilated ventricles, and dilation of the left atrium. An ECG shows ventricular depolarization complexes that have low voltage. Which of the following is the most likely diagnosis based on this clinical picture?

Eight-year-old Elena who has cystic fibrosis comes to the ER…

Eight-year-old Elena who has cystic fibrosis comes to the ER with a persistent cough and fever. Her physical exam reveals diffuse crackles throughout her lower bases. Her chest x-ray reveals scattered perihilar infiltrates. Which one of the following organisms is most likely the cause of her pneumonia?