The Case: A 55-year-old man on the general medicine ward began to display abnormal “vital sings” just prior to being discharged from the hospital. The patient was admitted 3 days before for renal colic and hydronephrosis. Clinical Presentation: His respiratory rate (RR) is 25 breaths/minute, blood pressure (BP) is 84 mm Hg/46 mm Hg, and temperature is 101°F and heart rate (HR) is 130 beats/min with a regular rhythm. His oxygen saturation (O 2 sat) is 80% on ambient air (RA). The patient is confused and answers questions slowly but correctly.

A rapid response team (RRT) is called to initiate goal-directed treatment. What is the most likely diagnosis? *This Image case is from Docplexus Editorial Team for educative purpose only. Source: Case Files Critical Care