Why heart start racing for 6 or 7 beats and some time stop 1 2 beat.some up down beats.if ECG blood pressure in control health is fine.why it happens?

There are a few possible reasons why your heart might start racing for 6 or 7 beats and then stop for 1 or 2 beats. Some of these reasons include:

* Ectopic beats: These are extra heartbeats that originate from outside of the sinus node, which is the normal pacemaker of the heart. Ectopic beats can be caused by a variety of factors, including caffeine, nicotine, alcohol, stress, and anxiety.

* Atrial fibrillation: This is a heart rhythm disorder that causes the upper chambers of the heart (the atria) to beat irregularly. Atrial fibrillation can cause a variety of symptoms, including heart palpitations, chest pain, shortness of breath, and fatigue.

* Wolff-Parkinson-White syndrome: This is a rare heart condition that causes an extra electrical pathway between the atria and ventricles of the heart. Wolff-Parkinson-White syndrome can cause a variety of symptoms, including heart palpitations, chest pain, and shortness of breath.

* Long QT syndrome: This is a heart condition that causes the QT interval (the time it takes for the heart to beat and then relax) to be longer than normal. Long QT syndrome can cause a variety of symptoms, including heart palpitations, chest pain, fainting, and seizures.

If you are experiencing heart palpitations, it is important to see a doctor to determine the cause. Your doctor may order an electrocardiogram (ECG) to measure the electrical activity of your heart and a blood pressure test to check your blood pressure. If necessary, your doctor may also order additional tests to rule out other possible causes of your symptoms.

Treatment for heart palpitations will depend on the underlying cause. In some cases, treatment may not be necessary. In other cases, treatment may include medications, surgery, or lifestyle changes.