Dysrhythmia

Definition

Dysrhythmia is an abnormality in the rhythm of the heartbeat, which can result from irregular electrical activity in the heart. It can lead to complications such as decreased cardiac output and increased risk of stroke.

5 Must Know Facts For Your Next Test

1. Dysrhythmias can be classified as bradycardia (slow heart rate) or tachycardia (fast heart rate).
2. Common causes include electrolyte imbalances, ischemic heart disease, and drug toxicity.
3. Antidysrhythmic drugs are categorized into four main classes based on their mechanism of action.
4. Patients with severe dysrhythmias may require emergency interventions such as defibrillation or cardioversion.
5. Monitoring techniques like ECG (electrocardiogram) are essential for diagnosing and managing dysrhythmias.

Review Questions

• What are the main types of dysrhythmias?
• List three common causes of dysrhythmias.
• Why is an ECG important in the management of dysrhythmias?

Related terms

Bradycardia:

A type of dysrhythmia characterized by a slow heart rate, typically below 60 beats per minute.

Tachycardia:

A type of dysrhythmia where the heart rate exceeds the normal resting rate, usually above 100 beats per minute.

ECG (Electrocardiogram): A diagnostic tool used to measure and record the electrical activity of the heart.