Final answer:
Polymorphic ventricular tachycardia is an irregular and fast heart rhythm that can be life-threatening. It is characterized by a changing QRS complex on an ECG. Treatment involves addressing the underlying cause and may include medications or implantable devices.
Step-by-step explanation:
Polymorphic ventricular tachycardia is a type of arrhythmia where the heart beats in an irregular and fast pattern. It is characterized by a changing QRS complex on an electrocardiogram (ECG), which represents the electrical activity of the ventricles. This condition can be life-threatening and may lead to cardiac arrest if not treated promptly.
One of the causes of polymorphic ventricular tachycardia is a condition called long QT syndrome, which affects the repolarization of the ventricles. Other risk factors include heart disease, electrolyte imbalances, and certain medications.
Treatment for polymorphic ventricular tachycardia involves addressing the underlying cause, such as correcting electrolyte imbalances or discontinuing medications that may be triggering the arrhythmia. In some cases, antiarrhythmic medications or implantable devices like pacemakers or defibrillators may be recommended to help regulate the heart's rhythm.