A nurse is reviewing the medical record of a client who has a prescription for intermittent heat therapy for a foot injury. Which of the following findings should the nurse identify as a contraindication for heat therapy?

A. Abdominal aortic aneurysm. While an abdominal aortic aneurysm is a serious vascular condition, it is not directly affected by localized heat therapy to an extremity such as the foot. However, heat should still be used cautiously near major vascular abnormalities. B. Phlebitis. Heat therapy is often used to reduce inflammation and promote circulation in conditions like phlebitis. Although care must be taken, it is not an absolute contraindication and may actually be prescribed in some mild cases under supervision. C. Osteoarthritis. Heat therapy is commonly used for osteoarthritis to relax muscles, improve joint mobility, and alleviate stiffness and discomfort. It is considered a beneficial and appropriate treatment modality for this condition. D. Peripheral neuropathy. Clients with peripheral neuropathy may have impaired sensation, making them unable to detect excessive heat. This puts them at high risk for burns or thermal injury, making heat therapy a contraindication for safety reasons.