Which intervention is least likely to prevent complications following a plaster cast application?

Providing emotional support, while important for the overall well-being of a patient, does not directly address the physical complications that can arise from a plaster cast application. After a cast is applied, patients can face risks such as skin breakdown, swollen extremities, or compromised circulation.

Monitoring skin integrity helps to catch early signs of irritation or pressure ulcers, while allowing movement at the joints (if appropriate) can prevent stiffness and maintain circulation. Additionally, encouraging elevation and applying ice can effectively reduce swelling and promote blood flow, minimizing the risk of complications. Emotional support may alleviate anxiety and improve patient comfort, but it does not have a direct impact on the physical health issues that may arise as a result of having a cast. Consequently, it is the intervention that is least likely to prevent complications specifically related to the cast application.