Final answer:
Weighing themselves every day and calling their healthcare provider if weight increases by a certain amount helps prevent rehospitalization for clients with congestive heart failure.
Step-by-step explanation:
The most beneficial thing you can tell a client with congestive heart failure that might prevent rehospitalization is to weigh themselves every day and call their healthcare provider if their weight increases by 3 pounds in 24 hours or 5 pounds in one week. Weight gain can indicate fluid retention, which is a common symptom of congestive heart failure. Monitoring weight can help detect changes in fluid status and allow for early intervention.