参考答案：D

解析：

CAD develops when fatty deposits line the walls of the coronary arteries, impeding blood flow and therefore decreasing cardiac output. Thermoregulatory disturbances aren’t usually associated with CAD unless accompanied by heart failure. Impaired gas exchange may occur if the blood’s oxygen-carrying capacity were altered, as in anemia, chronic obstructive pulmonary disease, or carbon monoxide poisoning. There would be a risk of injury if the client had sensory or motor deficits.