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 42-year-old woman is brought to the emergency department because of intermittent sharp right upper quadrant abdominal pain and nausea for the past 10 hours. She vomited three times. There is no associated fever, chills, diarrhea, or urinary symptoms. She has two children who both attend high school. She appears uncomfortable. She is 165 cm (5 ft 5 in) tall and weighs 86 kg (190 lb); BMI is 32 kg/m2. Her temperature is 37°C (98.6°F), pulse is 100/min, and blood pressure is 140/90 mm Hg. She has mild scleral icterus. The abdomen is soft and nondistended, with tenderness to palpation of the right upper quadrant without guarding or rebound. Bowel sounds are normal. Laboratory studies show:
Hemoglobin count 14 g/dL
Leukocyte count 9,000 mm3
Platelet count 160,000 mm3
Serum
Alkaline phosphatase 238 U/L
Aspartate aminotransferase 60 U/L
Bilirubin
Total 2.8 mg/dL
Direct 2.1 mg/dL
Which of the following is the most appropriate next step in diagnosis?"
assistant
Transabdominal ultrasonography