Which of the following is a typical symptom of myocardial ischemia?

Intermittent chest pain relieved with rest is a typical symptom of myocardial ischemia because it reflects the heart's need for oxygen during times of increased demand or stress, which is not met due to narrowed coronary arteries. This pain, often described as angina, usually occurs during physical exertion or emotional stress. When the individual rests, the demand for oxygen decreases, and the symptoms often subside. This pattern distinguishes myocardial ischemia from other cardiac conditions, as the pain typically resolves with relief from the trigger.

Other symptoms like consistent chest pain, severe lightheadedness, or sustained high blood pressure are not characteristic of myocardial ischemia. Consistent chest pain may indicate more severe or prolonged ischemia or other cardiac conditions. Lightheadedness can occur in various situations but is not specific to ischemia, and sustained high blood pressure, while it may contribute to ischemic events over time, does not represent an acute symptom of ischemia itself.