What is the difference between monomorphic and polymorphic tachycardia?
What is the difference between monomorphic and polymorphic tachycardia?
Monomorphic ventricular tachycardia is a more organized rhythm than the polymorphic form, and patients may maintain a reasonable hemodynamic state. In the absence of hypotension, monomorphic ventricular tachycardia can be treated with intravenous sotalol (1 mg/kg to a maximum of 100 mg) or amiodarone (5 mg/kg).
What is an atrial tachycardia?
Atrial tachycardia (AT) is a type of abnormal heart rhythm, or arrhythmia. It occurs when the electrical signal that controls the heartbeat starts from an unusual location in the upper chambers (atria) and rapidly repeats, causing the atria to beat too quickly.
What are the characteristics of atrial tachycardia?
Manifestations of atrial tachycardia include the following: Rapid pulse rate: In most atrial tachycardias, the rapid pulse is regular; it may be irregular in rapid atrial tachycardias with variable AV conduction and in multifocal atrial tachycardia (MAT) Episodic or paroxysmal occurrence. Sudden onset of palpitations.
What are monomorphic PVCs?
Monomorphic VT typically occurs with reentry around a substrate or due to triggered automaticity as seen with right-ventricular outflow-tract tachycardia. Polymorphic VT is typically the result of increased automaticity. There are three major concerns regarding the presence of PVCs and NSVT.
Is atrial tachycardia bad?
Atrial tachycardia is a type of arrhythmia — an irregular heart rhythm — that causes the upper chambers of your heart to beat faster than normal. This condition has several possible causes but is usually not dangerous. It is often curable or manageable with medication.
Is atrial tachycardia the same as atrial flutter?
Atrial flutter is a type of atrial tachycardia that results in an arrhythmia (rhythm disorder or not a normal rhythm) where the atria of the heart beat too quickly in a fast, usually regular, rhythm. Atrial fibrillation is another type of atrial tachycardia that is closely related to atrial flutter.
What does monomorphic VT mean?
When the ventricular activation sequence is constant, the electrocardiographic (ECG) pattern remains the same, and the rhythm is called monomorphic VT (see the image below). Monomorphic VT is most commonly seen in patients with underlying structural heart disease.
How is atrial tachycardia difference?
Physical Examination Findings. The landmark physical finding in atrial tachycardias is the tachycardia itself, with a heart rate above 100 bpm and rarely dropping below but faster than the underlying sinus rhythm.
What is the difference between atrial fibrillation and atrial tachycardia?
Atrial fibrillation is another type of atrial tachycardia that is closely related to atrial flutter. However, the arrhythmia that occurs in AFib is much more chaotic and results in a fast and usually very irregular heart rhythm or a atypical and irregular ventricular rate that can effect heart health.
What causes monomorphic ventricular tachycardia?
Monomorphic VT is most commonly seen in patients with underlying structural heart disease. There is typically a zone of slow conduction, most commonly the result of scarring or fibrillar disarray. Causes include prior infarct, any primary cardiomyopathy, surgical scar, hypertrophy, and muscle degeneration.
What medications are used to treat tachycardia?
Treatment of the underlying cause
Can someone tell me what tachycardia feel like?
The most common symptom of tachycardia is palpitations – the feeling that the heart is racing or fluttering. Other symptoms sometimes include lightheadedness, shortness of breath and fatigue.
What are the reasons for tachycardia?
Tachycardia can be part of the body’s normal response to anxiety, fever, rapid blood loss or strenuous exercise. It also can be caused by medical problems, such as an abnormally high level of thyroid hormones, called hyperthyroidism.