What indicates a proper understanding of the care instructions for a new cast?

The statement indicating a proper understanding of the care instructions for a new cast is the one that emphasizes the importance of keeping the cast dry and clean. This is crucial because moisture can compromise the integrity of the cast, potentially leading to skin irritation or infections. Keeping the cast clean also helps to prevent odors and deterioration of the material. This understanding is fundamental in ensuring the cast remains effective in immobilizing the affected area while also protecting the skin underneath.

The other statements reflect misunderstandings of proper cast care. Removing the cast to relieve itching could lead to inadequate support for the healing injury. Using a heating pad may also create unwanted moisture or heat that could compromise the cast, and advising not to move fingers in the cast could hinder circulation and flexibility; while some restriction in movement may be necessary, passive range of motion exercises are often encouraged to maintain health in non-immobilized areas.