What is one function of an indwelling catheter?

An indwelling catheter is specifically designed for the continuous drainage of urine from the bladder. This function is crucial for individuals who may be unable to urinate independently due to various medical conditions or recovery from surgery. The catheter remains in place for an extended period, allowing for ongoing monitoring of urine output and preventing urinary retention, which can lead to bladder distension and other complications.

The other options describe functions that are associated with different medical devices or procedures. For instance, monitoring blood pressure typically involves the use of a cuff and a sphygmomanometer, not a catheter. Administering medication directly into the bloodstream is done through intravenous (IV) lines, while nutritional support is usually provided via feeding tubes or IV nutrition, not through an indwelling catheter. Therefore, the primary and correct function of an indwelling catheter is indeed to facilitate continuous urine drainage.