All the essential nutrients can be found in a vegetarian diet! (Coming from a vegetarian herself :))
Heat stroke is the most serious heat-related illness. It occurs when the body becomes unable to control its temperature: the body's temperature rises rapidly, the sweating mechanism fails, and the body is unable to cool down. Body temperature may rise to 106°F or higher within 10 to 15 minutes.
Since the patient is experiencing a musculoskeletal injury and had to make some changes in his diet which includes foods rich in calcium, the food items that the nurse should encourage the patient to include in his diet are those that are rich in Vitamin D such as liver, eggs, butter and fatty fish. Vitamin D facilitates and improves the absorption of calcium in the body.
Poor health and decreased appetite