A full-term weighing 3500g boy presents mildly jaundice with a total serum bilirubin of 205μmol/L(0.12g/L) at 48 hours of age.The baby is born to a 27-year-old primigravida with blood type O at 2 hours after membranes rupture. Breast-feeding has been wellThe most appropriate additional diagnostic studies to evaluate the cause of this infant jaundice areThe nurse calls to inform you that the infant studies are back.The baby has O-positive blood. His direct serum bilirubin is 3. 4μmol/L(0.002g/L) with a repeat total serum bilirubin of 201 μmol/L(0.12g/L). The white count is 13×10⁹/L with a diff

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• A full-term weighing 3500g boy presents mildly jaundice with a total serum bilirubin of 205μmol/L(0.12g/L) at 48 hours of age.The baby is born to a 27-year-old primigravida with blood type O at 2 hours after membranes rupture. Breast-feeding has been wellThe most appropriate additional diagnostic studies to evaluate the cause of this infant jaundice are
• A 2-hour-old full-term newborn infant is noted to be having episodes of cyanosis and apnea，which are worse when he is feeded but are better when he is stimulated and cries.The most important next step to quickly establish the diagnosis is
• A female student， aged 18 years，w ho fell on her buttocks in a bicycle accident presents with swollen soft tissue， hot skin， and tenderness in the left buttock. The doctor suspects inflammation， where the patient has traumatic inflammation besides bacterial infection. Which of the following is NOT among the possible pathologic responses?
• A 15-year-old boy developed a left Bell''s palsy over the course of 1 week. He was treated with acyclovir and prednisone. Over the next 3 months he seemed to recover almost fully. However,he has noticed involuntary twitching at the left corner of the mouth each time he tries to blink the left eye. This is most likely caused by:
• A fully immunized 2-year-old boy presents to the emergency room with several days of low-grade fever，barking cough，and noisy breathing. Over the last few hours he has developed a fever of 40℃ and looks toxic. He has inspiratory and expiratory stridor. The family has not noticed drooling，and he seems to be drinking without pain. Direct laryngoscopy reveals a normal epiglottis. The management of this disease process includes which of the following?