Final answer:
A stress test helps evaluate heart's response to exercise. It can help identify exercise-induced arrhythmias in long QT syndrome patients. Monitoring heart rhythm during the test helps in assessing the severity of the condition.
Step-by-step explanation:
A stress test is a diagnostic test used to evaluate the heart's response to exercise or physical stress. It involves monitoring the heart's electrical activity, blood pressure, and heart rate while the patient exercises on a treadmill or stationary bike.
In the case of long QT syndrome, a stress test can help identify exercise-induced arrhythmias, where the heart beats abnormally due to the condition. This can help determine the severity of the condition and guide treatment decisions.
During a stress test for long QT syndrome, the medical professional will closely monitor the patient's heart rhythm and look for any abnormalities or irregularities that may suggest increased risk or trigger dangerous arrhythmias.