Ventricular arrhythmias
Ventricular Arrhythmias
Ventricular arrhythmias (pronounced ven-TRIK-yoo-lar uh-RITH-mee-uhs) are a group of conditions characterized by abnormal electrical activity in the ventricles of the heart. This can lead to irregular heart rhythms, known as arrhythmias, which can be life-threatening if not treated promptly.
Etymology
The term "ventricular arrhythmias" is derived from the Latin word "ventriculus", meaning "little belly", referring to the lower chambers of the heart, and the Greek word "arrhythmia", meaning "without rhythm".
Types of Ventricular Arrhythmias
There are several types of ventricular arrhythmias, including:
- Ventricular Tachycardia (VT): A rapid heart rate originating from the ventricles.
- Ventricular Fibrillation (VF): A chaotic, irregular heart rhythm originating from the ventricles.
- Premature Ventricular Contractions (PVCs): Extra, abnormal heartbeats originating in the ventricles.
Causes
Ventricular arrhythmias can be caused by various conditions that damage the heart's structure or disrupt its electrical system. These include coronary artery disease, heart attack, cardiomyopathy, heart failure, and certain genetic conditions such as Long QT Syndrome.
Symptoms
Symptoms of ventricular arrhythmias can vary depending on the type and severity of the arrhythmia. They may include palpitations, dizziness, shortness of breath, chest pain, and in severe cases, cardiac arrest.
Treatment
Treatment for ventricular arrhythmias typically involves medications, medical procedures, and lifestyle changes. Medications may include beta blockers, calcium channel blockers, and antiarrhythmic drugs. Procedures may include cardioversion, catheter ablation, and the implantation of a cardiac defibrillator.
Related Terms
External links
- Medical encyclopedia article on Ventricular arrhythmias
- Wikipedia's article - Ventricular arrhythmias
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