Rapid Heartbeat: Causes, Warning Signs & Treatment

What Is Rapid Heartbeat?

A rapid heartbeat (tachycardia) means your heart beats faster than normal while at rest, typically above 100 beats per minute. It can feel like your heart is racing or pounding. While often caused by exercise, stress, or caffeine, persistent rapid heartbeat may indicate a heart rhythm disorder.

Common Causes of Rapid Heartbeat

• Exercise or physical exertion
• Stress or anxiety
• Caffeine or stimulants
• Dehydration
• Fever
• Heart arrhythmias (SVT, atrial fibrillation)

When to See a Doctor

See a doctor if your resting heart rate is consistently above 100 bpm, or if rapid heartbeat episodes last more than a few minutes. Seek emergency care for rapid heartbeat with chest pain, fainting, or severe shortness of breath.

Warning Signs That Need Immediate Attention

Frequently Asked Questions

What is a dangerous heart rate?

A resting heart rate consistently above 100 bpm warrants medical evaluation. Rates above 150 bpm at rest need urgent assessment. During exercise, your maximum safe rate is roughly 220 minus your age.

Can dehydration cause rapid heartbeat?

Yes, dehydration reduces blood volume, causing your heart to beat faster to maintain blood pressure. Drinking adequate water, especially in heat and during exercise, helps maintain a normal heart rate.

What is SVT?

Supraventricular tachycardia (SVT) is a rapid heart rhythm originating above the heart's ventricles. It causes sudden episodes of rapid heartbeat (150-250 bpm). It is usually not dangerous but can be very uncomfortable. Effective treatments exist.

How do I slow my heart rate down?

Vagal maneuvers like bearing down, splashing cold water on your face, or coughing can slow an episode. Long-term strategies include reducing caffeine, managing stress, staying hydrated, and regular exercise.

How much does heart rhythm evaluation cost?

An EKG costs $50-$300. A Holter monitor costs $200-$500. Electrophysiology studies cost $3,000-$10,000. A cardiologist visit costs $200-$500. OpenMyPro helps you find affordable cardiac care.

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