MSRA-1101

MSRA-1101

A 65-year-old woman presents to the emergency department with a 4-day history of increased shortness of breath, cough with green sputum, and reduced exercise tolerance. She has a history of COPD and is currently on a salbutamol inhaler, combined glycopyrronium and indacaterol inhaler, and oral prednisolone to manage her symptoms. She is being evaluated for BIPAP home therapy. On examination, her respiratory rate is 22/min, oxygen saturations are 85% in room air, heart rate is 86/min, temperature is 37.7ºC, and blood pressure is 145/78 mmHg. What is the most likely causative organism for her presentation?