LAUSR

Hemorrhagic cardiac tamponade with blood clot formation in acute type A aortic dissection (AAAD) is extremely rare. We presented an 86-year-old female patient with hemorrhagic cardiac tamponade with blood clot formation in AAAD. In clinical practice, D-dimer is a promising biomarker with a threshold level of < 500 ng/mL to exclude aortic dissection. However, the present case was diagnosed with AAAD and died quickly despite the initial D-dimer of < 500 ng/mL. Throughout the process of exploring the final diagnosis, point-of-care transthoracic cardiac ultrasound is helpful to provide diagnostic clues.