Serosanguineous drainage is wound or drain output that contains both serous fluid (clear yellow) and sanguineous fluid (bl**dy), resulting in a thin, watery, pink to light red appearance. It is commonly seen in the early postopeive period and reflects a mixture of serous fluid (mostly plasma) and red blood cells, typically indicating mild capillary bleeding her than active hemorrhage. 👆 succinct summary by @OpenEvidence #openevidenceadvisor #surgery #medicalstudent #residentphysician #nurse | J