Final answer:
To prevent skin breakdown in an immobile patient, frequent repositioning should be the nurse's priority, as it reduces prolonged pressure and promotes circulation to prevent bedsores.
Step-by-step explanation:
To minimize the patient's chance of skin breakdown, the nurse should prioritize frequent repositioning. Skin and its underlying tissue can be affected by excessive pressure leading to bedsores, also known as decubitis ulcers. These occur due to constant pressure on bony areas of the body, reducing blood flow and causing tissue necrosis. To prevent these injuries, especially in patients who are immobile such as after an ischemic stroke, it's crucial to adjust their position regularly. This reduces pressure on vulnerable areas and enhances circulation, thereby preventing the development of pressure sores.