Community-Acquired Pneumonia: Initial Prescribing

You are called to see a 60-year-old woman, Patient B-217, who weighs 70 kg. She was admitted with a 3-day history of cough productive of yellow sputum, fever and worsening breathlessness. She has no known allergies and takes no regular medications. On examination: temperature 38.7°C, heart rate 110 bpm, blood pressure 118/74 mmHg, respiratory rate 32/min, oxygen saturations 88% on room air. Chest examination reveals reduced breath sounds and crackles at the right base. A chest X-ray shows right lower lobe consolidation. Laboratory results: white cell count 14.2 x 10^9/L, C-reactive protein 156 mg/L, blood urea nitrogen 9.5 mmol/L, serum creatinine 1.0 mg/dL (eGFR 70 mL/min/1.73m^2), liver function tests normal. The CURB-65 score is 2 (respiratory rate 32 and urea >7 mmol/L), indicating moderate severity. The patient is to be treated on the ward with oxygen to maintain saturations 94-98% and intravenous antibiotics. Please write the initial prescription for antibiotics and oxygen, and specify when to review.