All the content from the Blood & Clots series can be found here. CanMEDS Roles addressed:  Medical Expert, Health Advocate Case Description A patient is admitted to the internal medicine ward and after 5 days of clinical stability, she develops respiratory failure and is admitted to ICU. After 72 hours of mechanical ventilation her D-Dimer is increasing, and she develops worsening oxygenation. When should one suspect PE in COVID-19, and how to establish …