Tachycardia

Definition

Tachycardia is a condition characterized by an abnormally fast heart rate, typically over 100 beats per minute in adults. It can arise from various factors including stress, medications, or underlying medical conditions.

5 Must Know Facts For Your Next Test

1. Tachycardia can be classified into several types such as atrial tachycardia, ventricular tachycardia, and sinus tachycardia based on the origin of the increased heart rate.
2. Antidysrhythmic drugs are commonly used to manage tachycardia by restoring normal heart rhythm or controlling the heart rate.
3. Common symptoms of tachycardia include palpitations, shortness of breath, dizziness, and chest pain.
4. Beta-blockers and calcium channel blockers are frequently prescribed medications for treating forms of tachycardia.
5. Untreated severe tachycardia can lead to complications such as heart failure, stroke, or sudden cardiac arrest.

Review Questions

• What are the main types of tachycardia and how are they differentiated?
• Which classes of antidysrhythmic drugs are commonly used to treat tachycardia?
• What are some common symptoms that may indicate a person has tachycardia?

Related terms

Bradycardia:

A condition characterized by an abnormally slow heart rate, typically below 60 beats per minute.

Atrial Fibrillation:

An irregular and often rapid heart rate that can lead to poor blood flow and increased risk of stroke.

Ventricular Tachycardia:

A type of fast heart rate originating from the lower chambers (ventricles) that can be life-threatening if not treated promptly.