Ventricular tachycardia:

 

Ventricular tachycardia:

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Ventricular tachycardia is an abnormally rapid heartbeat that begins in the lower ventricles of the heart.

Your heart is a four-chamber muscle pump. The top two are called atria. The bottom two are called ventricles. They work together to pump blood throughout the body. A healthy heart beats about 100,000 times a day. They begin at the sinus node (SA). The atrium he is located in one and is often called the heart's natural pacemaker.

This signal causes the atria to contract and blood to flow into the ventricles. It then travels to another part of the heart called the atrioventricular (AV) node. This causes the ventricles to contract, causing more blood to move.

 

When  happens:

With VT, the electrical signals in the ventricles take over, making the heart beat faster. Impulses from SA nodes are also affected. Most normal heart rates are in the range of 60-100 beats per minute. Ventricular tachycardia can be a heart rate of 170 beats per minute or more.

When this happens, the upper chambers of the heart do not have time to replenish blood and send it to the ventricles. As such, blood does not pass through the body the way it should.

In some cases, this condition can lead to ventricular fibrillation. Ventricular fibrillation is a condition that causes a very rapid and uneven heartbeat of 300 or more beats per minute. 

 

Symptoms :

You may not notice any symptoms, especially if your heart is beating fast for a few seconds.

 

VT can cause:

Dizziness or lightheadedness

Chest pain

Palpitation

Difficulty breathing

Syncope

Tightness in the neck

Cardiac arrest (cardiac arrest)

 

When should I call my doctor?

If you feel lightheaded, dizzy, have rapid heartbeats, or faint, see your doctor as soon as possible.

If you have a very high heart rate, chest pain or trouble breathing, call 911.

Ventricular tachycardia is more likely to occur if you are older or if you have a family member with an arrhythmia. Other conditions that can cause or increase the likelihood of VT are:

 

 

Damage caused by heart disease, such as heart attack, heart failure, valvular heart disease, and inflammation of the heart muscle (myocarditis)

sarcoidosis, a condition in which inflamed tissue grows in the body

Disorders inherited from parents, such as long QT syndrome or Brugada syndrome

 

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Dosage:

Uneven electrolyte levels in the blood

Excessive intake of alcohol or caffeine

recreational drugs

When doctors cannot find a cause, it is called idiopathic ventricular tachycardia.

Also, there are some tests of the heart.

The first thing you're likely to get is something called an electrocardiogram. Record the electrical activity of the heart.

Your doctor may also ask you to have an electrophysiologic test to identify problem areas in your heart.

 

Treatment of ventricular tachycardia:

If you have no symptoms or your episode is less than 30 seconds, do nothing. Otherwise, treatment depends on the cause of the problem.

 

If drugs or caffeine are causing VT, they should be stopped.

 

Doctors give an electric shock to the heart to return it to its normal rhythm. This is a common emergency treatment, especially when VT is associated with syncope or low blood pressure.

Drugs that reduce heart rate, such as amiodarone (Nexterone, Pacerone), flecainide (Tambocor), lidocaine (Lidopen), propafenone (Rhythmol SR), and sotalol (Betapace, Sotylyze). These do not work as well as cardioversion and can cause side effects. Your doctor will implant a small pacemaker near your collarbone. It sends a signal to both ventricles to make them work normally.

This is a small device that is placed under the skin just below the collarbone. You can get it with your CRT. An ICD resets the heartbeat by delivering a shock when the heartbeat becomes irregular. You can prevent VT from causing life-threatening problems.

Cardiac ablation. This is also known as catheterization or radiofrequency ablation. Doctors use heat to destroy abnormal heart tissue. This method can treat and cure ventricular tachycardia.

 

 

Prevention :

The best way to prevent VT is to keep your heart healthy.

 

Eat healthy.

Don't smoke, don't take drugs.

Exercise regularly to maintain a healthy weight.

Ask your doctor about over-the-counter medications that cause tachycardia.

If your doctor has prescribed heart medication, take it as directed.