Final answer:
Thrombolytic therapy is not recommended for a stroke patient whose symptoms began 24 hours before being admitted because the therapy needs to be administered within the first 3 hours of symptom onset for optimal effectiveness.
Step-by-step explanation:
Thrombolytic therapy is not recommended for a client admitted with the diagnosis of a brain attack (stroke) whose symptoms began 24 hours before being admitted because thrombolytic therapy is most effective within the first 3 hours of symptom onset. After 3 hours, the risks associated with the therapy, such as bleeding, outweigh the potential benefits. Therefore, thrombolytic therapy is time-sensitive and should be administered as soon as possible after stroke onset to maximize its effectiveness.