Which symptom during exercise would be a red flag for arrhythmias?

Which symptom during exercise would be a red flag for arrhythmias?

• A. Palpitations with dizziness.
• B. Leg cramps only.
• C. Mild fatigue after long run.
• D. Headache after exercise

Answer: (A)

During exercise, the heart should keep a steady rhythm and pump enough blood to meet the body's needs. When palpitations are felt together with dizziness, this signals that the heart rhythm may be off and not delivering adequate blood flow. The combination can point to a potentially dangerous arrhythmia, since a fast or irregular rhythm can reduce brain perfusion and cause lightheadedness or near-fainting. That’s why this symptom pair stands out as a concern during activity. Leg cramps can come from muscle fatigue or dehydration, mild fatigue after a long run is common, and headaches after exercise are usually related to dehydration, heat, or exertion—none of which specifically indicate an arrhythmia. If the palpitations with dizziness occur, it’s important to stop and seek medical evaluation to assess heart rhythm.

During exercise, the heart should keep a steady rhythm and pump enough blood to meet the body's needs. When palpitations are felt together with dizziness, this signals that the heart rhythm may be off and not delivering adequate blood flow. The combination can point to a potentially dangerous arrhythmia, since a fast or irregular rhythm can reduce brain perfusion and cause lightheadedness or near-fainting. That’s why this symptom pair stands out as a concern during activity.

Leg cramps can come from muscle fatigue or dehydration, mild fatigue after a long run is common, and headaches after exercise are usually related to dehydration, heat, or exertion—none of which specifically indicate an arrhythmia. If the palpitations with dizziness occur, it’s important to stop and seek medical evaluation to assess heart rhythm.