A client was admitted 3 days earlier with a suspected brain tumor. During assessment, the nurse notes clear drainage from the nose. Which action by the nurse may help to determine whether the drainage is cerebrospinal fluid (CSF)?

The Progressive Care Certified Nurse (PCCN) exam is administered by the American Association of Critical-Care Nurses (AACN), which is the largest specialty nursing organization in the world. The PCCN examination tests applicants' knowledge of caring for acutely ill adult patients.

PCCN is a specialty certification for nurses who provide direct care to acutely ill adult patients regardless of their physical location. Nurses interested in this certification may work in areas such as intermediate care, direct observation, stepdown, telemetry, transitional care or emergency departments.