Which instruction should be given to a client who just had a plaster cast applied to the right forearm?

Keeping the cast clean and dry is essential for several reasons. Plaster casts can take several days to fully harden, but they can also be damaged by moisture, which inhibits proper drying and may compromise the structural integrity of the cast. A wet cast can lead to skin irritation, infections, or skin breakdown beneath the cast, as well as impairment in healing.

This instruction also emphasizes the importance of maintaining the cleanliness of the cast. Keeping it clean prevents the buildup of dirt and bacteria that could enter through the cast's surface and cause infections. Users should be cautious during activities of daily living to avoid exposure to water or dirt.

While allowing the cast time to dry is important, the focus should be on ensuring that it remains dry in the first place. Submerging the cast in water is detrimental and can lead to significant complications, while removing the cast prematurely can hinder the healing process. Thus, the instruction to keep the cast clean and dry encompasses the primary care for a newly applied plaster cast and emphasizes patient safety and effective healing.