Heart Arrhythmia: Basic Introduction to Ventricular Fibrillation & Ventricular Tachycardia

Presentation Transcript

  1. Heart Arrhythmias
  2. What is Heart Arrhythmias? Heart Arrhythmias result from any disturbance in the rate, regularity, and site of origin or conduction of the cardiac electric impulse. Heart Arrhythmias is divided into two groups. First group includes Ventricular fibrillation & tachycardia, which are life-threatening and require immediate therapy with a defibrillator. Second group include arrhythmias that are not imminently life-threatening but may require therapy to prevent further problems.
  3. What is ventricular arrhythmia? Ventricular arrhythmias include ventricular tachycardia and ventricular fibrillation. To diagnose an arrhythmia, your doctor will typically start with an electrocardiogram (ECG) test.
  4. What is Ventricular Tachycardia(VT) Ventricular tachycardia is a fast heart rhythm that occurs in one of the ventricles (i.e. Lower Chambers) of your heart. Here, electrical impulses circulate in an endless loop ( It is like one electrical short circuit that races in a circle). One special type of ventricular tachycardia is called “Right Ventricular Outflow Tachycardia”. This rhythm occurs in the part of the heart where blood is going from the right ventricular to the lungs.
  5. Abnormal electrical signals in ventricles:
  6. What is Ventricular Fibrillation(VF) Ventricular fibrillation originates from many different locations in the ventricles, each one trying to signal the heart to beat. In this case, the heart beats much faster than normal, sometimes over 300 beats a minute. It is an abnormal heart rhythm that is disorganized and irregular. The lower chambers quiver instead of contract.
  7. Ventricular Fibrillation:
  8. What are the symptoms of VT & VF Ventricular Tachycardia & Ventricular Fibrillation occur most commonly in people who have damaged heart muscle or coronary artery disease. These include fainting without warning and even sudden death. In the cases of VT, sometimes patients feel chest pain, shortness of breath, or sweating.
  9. What are the risks of VT & VF? Rapid heart rates of the lower heart chambers prevent VF & VT from having adequate time to fill with blood. As a result, the heart does not pump effectively; the heart muscle, brain, and other parts of the body do not get adequate blood supply, which can result in fainting and even loss of life. VT can often be diagnosed and treated but VF almost always results in cardiac arrest and death if not terminated quickly. This is termed “sudden cardiac death”.