A 58-year-old man is brought to the Emergency Department with worsening jaundice, confusion and poor oral intake. He is drowsy but rousable, has deep icterus, asterixis and right upper quadrant tenderness. Blood tests show bilirubin 186 micromol/L, ALT 1240 IU/L, INR 3.1, glucose 3.2 mmol/L and lactate 2.8 mmol/L. He is warm peripherally but looks septic, and the triage nurse escalates for urgent senior review, intravenous fluids and empiric antibiotics while the sepsis screen is completed.

Given the above clinical  features , which antibiotic should be avoided if suitable alternatives are available?