When educating a patient with a plaster cast, which precaution should be emphasized?

Emphasizing the importance of reporting any increase in drainage or interruption in cast integrity is critical for several reasons. A plaster cast is designed to immobilize and protect an injured area, but it can also create a warm, moist environment that can lead to complications such as infection or skin breakdown if not monitored properly.

If there is an increase in drainage, it could be a sign of worsening injury or infection, signaling that medical evaluation is needed. Similarly, interruption in cast integrity—such as cracking, softening, or any significant changes—can compromise the support the cast offers, leading to improper healing or additional injury. The ability to respond promptly to these signs is essential in providing effective care and ensuring a good outcome for the patient.

While keeping the cast dry is important to maintain its integrity and function, it is secondary to addressing changes in the patient's condition, as these indicate direct health threats. Changing the cast every week is unnecessary and impractical unless specified by a healthcare professional, and ignoring itching can lead to complications such as skin irritation or infection, which should also be managed appropriately.