Emergency Department Diagnosis of Septic Pulmonary Embolism due to Infectious Endocarditis Using Bedside Ultrasound

Abstract

Background: Septic pulmonary embolism (SPE) is a rare disorder caused by metastasis of infectious thrombi to the lungs. Most commonly, this occurs as a result of infectious endocarditis. This clinical entity may easily be confused for more common and less mortal diagnoses such as pneumonia, bronchitis, or pulmonary embolism.

Case report: A 47-year-old woman presented in respiratory distress with a complaint of cough productive of rusty sputum, shortness of breath, and pleuritic chest pain. A bedside ultrasound suggested endocarditis and SPE. She was resuscitated and admitted to the hospital for surgical source control and continued i.v. antibiotics. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: SPE is a rare disorder that may be easily missed but carries a high mortality rate. Additionally, the presence of the embolic phenomena makes the diagnosis of infectious endocarditis more attainable in the emergency department (ED). To our knowledge, this case is the first in which ED bedside ultrasound was used to make the diagnosis of SPE due to infectious endocarditis.

Keywords: POCUS; echo; emergency ultrasound; endocarditis; lung ultrasound; point-of-care ultrasound; pulmonary infarct; septic emboli; triple scan; ultrasound.