A 71-year-old man is brought to the emergency department by his family due to confusion and fever. Over the past 48 hours, he has complained of progressively worsening right upper quadrant abdominal pain and yellowing of his skin. His medical history includes hypertension and symptomatic cholelithiasis, for which he has previously declined surgical intervention. On arrival, his temperature is (), blood pressure is , pulse is , and respiratory rate is . Physical examination reveals deep scleral icterus and marked right upper quadrant tenderness with involuntary guarding. He is lethargic and oriented only to person. Laboratory studies show a leukocyte count of , total bilirubin of , and alkaline phosphatase of .
Arrange the following management steps in the most appropriate chronological sequence for this patient.
- 1Administration of aggressive intravenous crystalloid resuscitation
- 2Initiation of broad-spectrum intravenous antibiotic therapy
- 3Biliary decompression via endoscopic retrograde cholangiopancreatography (ERCP)
- 4Elective laparoscopic cholecystectomy