Unknown

A 80-year-old male presented with acute shoness of breath. His SpO2 levels were 80%. He was immediately intubated and shifted to the ICU and put on the ventilator. He was a chronic smoker and a known case of COPD for the past 5 years. He was staed in empirical antibiotics. Initial culture tests were negative. After 9 days, he developed ceain lesions in the lungs along with high grade fever. A bronchoalveolar lavage was done and sent for gram staining. The organism isolated was a multi-drug resistant organism. Biochemical reactions revealed oxidase positive and did not ferment any sugars. The organism isolated is resistant to all antibiotics except: -