What is the treatment approach for tachycardia?

What is the treatment approach for tachycardia?

• A. Slow the heart rate
• B. Speed up the heart rate
• C. Block conduction
• D. Increase blood pressure with fluids

Answer: (A)

Rate control is the primary approach to tachycardia because a fast heart rate shortens diastolic filling time, reduces stroke volume, and can worsen perfusion and symptoms. By slowing the rate, diastolic time improves, cardiac output can stabilize, and symptoms like dizziness or chest discomfort often lessen. In stable patients, vagal maneuvers or medications such as beta-blockers or non-dihydropyridine calcium channel blockers help reduce heart rate; for certain regular narrow-complex SVTs, adenosine may interrupt the rhythm. If the patient is unstable, synchronized cardioversion is used. The other options don’t address the rhythm itself: speeding up the heart would worsen the tachycardia; blocking conduction is a mechanism used selectively but isn’t the general treatment approach; and simply increasing fluids to raise blood pressure does not treat the fast rhythm itself.

Rate control is the primary approach to tachycardia because a fast heart rate shortens diastolic filling time, reduces stroke volume, and can worsen perfusion and symptoms. By slowing the rate, diastolic time improves, cardiac output can stabilize, and symptoms like dizziness or chest discomfort often lessen. In stable patients, vagal maneuvers or medications such as beta-blockers or non-dihydropyridine calcium channel blockers help reduce heart rate; for certain regular narrow-complex SVTs, adenosine may interrupt the rhythm. If the patient is unstable, synchronized cardioversion is used. The other options don’t address the rhythm itself: speeding up the heart would worsen the tachycardia; blocking conduction is a mechanism used selectively but isn’t the general treatment approach; and simply increasing fluids to raise blood pressure does not treat the fast rhythm itself.