OPD, BLK Super Speciality
Monday - 11:00 am to 2:00 pm
Thursday - 11:00 am to 2:00 pm
Friday - 2:00 pm to 5:00 pm
Room No. 115
OPD 3, 1st Floor
For Appointments Call
8860017412 / 8130698143 / 011 30403040
What Are Arrhythmias?
An abnormal heart rhythm that arises due irregularities in the heart’s electrical conduction system and associated tissues is called an arrhythmia or heart rhythm disorder.
During an arrhythmia the heart rate may be abnormally slow or abnormally fast or the heart’s rhythm may become abnormally irregular.
Abnormally slow heart rhythms (usually rates below 50 beats per minute) are known as Bradycardia. They usually occur due to defects in the SA Node or the AV Node. Bradycardia is very effectively treated by implantable pacemakers. These are electrical devices that artificially stimulate the heart and prevent it from beating too slowly.
Abnormally fast heart rates (usually 150 or more beats per minute) are known as Tachycardia. These are divided into two categories. Fast heart rates that begin in the upper chambers, the atria, are called Atrial Tachycardia. Fast heart rates that begin in the ventricles are called Ventricular Tachycardia (VT).
Although many types of arrhythmias are harmless, others can be extremely dangerous, even fatal. Therefore, it is important to determine the type of arrhythmia you have, establish how serious it is and begin appropriate treatment for your arrhythmia.
What Is Ventricular Tachycardia And Ventricular Fibrillation?
Fast rhythms beginning in your ventricles are called Ventricular Tachycardia (VT), the ventricular contractions are fast but regular and the heart may beat as fast as 200-400 beats per minute. VT often causes your ventricles to lose their pumping efficiency and could result in insufficient blood being pumped by the heart to your brain and other organs. As a result symptoms like palpitation, dizziness, shortness of breath and even loss of consciousness can occur.
VTs may occur in individuals who have heart diseases like:
• Blockages in the arteries (coronary artery disease)
• A previous heart attack (myocardial infarction)
• Heart muscle problems that cause the ventricles to dilate (dilated cardiomypathy) or the ventricular walls to become excessively thick (hypertrophic cardiomyopathy) heart failure (where the heart’s pumping efficiency is very poor)
Less frequently, VT can occur from rare inherited heart defects (long QT syndrome etc.), or even unknown causes. Ventricular tachycardia can be dangerous, even life-threatening if not properly treated.
At times, regular VT can degenerate into a completely irregular, unstable and chaotic electrical activity wandering around randomly in the ventricles. As a result, instead of contracting, the ventricles just quiver ineffectively and no blood is pumped by the heart to the brain and other organs, including the heart itself. This quivering of the ventricles as a result of chaotic electrical activity is called Ventricular Fibrillation (VF). The patient loses consciousness immediately after the commencement of VF and death occurs within minutes unless life-saving therapy is administered to the heart.