A 62-year-old woman is brought to the emergency department with a 24-hour history of severe right upper quadrant abdominal pain, high fever, and confusion. Her blood pressure is 84/52 mmHg, heart rate is 118/min, and temperature is 39.5°C (103.1°F). Physical examination reveals scleral icterus and right upper quadrant guarding. Laboratory studies show a leukocyte count of 22,000/mm³, total bilirubin of 6.1 mg/dL, direct bilirubin of 4.8 mg/dL, and alkaline phosphatase of 510 U/L. Bedside ultrasound demonstrates a dilated common bile duct of 14 mm with echogenic debris and gallstones, but no pericholecystic fluid or gallbladder wall thickening.
Arrange the following clinical interventions in the most appropriate chronological sequence for the optimal management of this patient.
- 1Obtain peripheral blood cultures alongside aggressive intravenous crystalloid resuscitation.
- 2Administer empiric broad-spectrum intravenous antibiotics.
- 3Perform emergent endoscopic retrograde cholangiopancreatography (ERCP) for biliary decompression.
- 4De-escalate to targeted antimicrobial therapy based on culture susceptibility results.
- 5Perform laparoscopic cholecystectomy after clinical stabilization prior to hospital discharge.