Supraventricular tachycardia is defined as
Supraventricular tachycardia is defined as Supraventricular tachycardia (SVT) is a term used to describe a rapid heart rhythm originating above the ventricles, primarily within the atria or the atrioventricular (AV) node. It is characterized by a sudden onset and termination of a fast, regular heart rate, typically ranging from 150 to 250 beats per minute. This condition is common in both children and adults and can cause a variety of symptoms, though some individuals may remain asymptomatic.
The heart’s electrical system controls the heartbeat by generating and transmitting electrical impulses. In SVT, there is usually an abnormal electrical circuit or extra electrical focus that causes the heart to beat abnormally fast. This abnormality can occur due to various reasons, including structural heart disease, electrolyte imbalances, or even without any apparent cause. The most common types of SVT include atrioventricular nodal reentrant tachycardia (AVNRT), atrioventricular reentrant tachycardia (AVRT), and atrial tachycardia. Supraventricular tachycardia is defined as
Clinically, individuals experiencing SVT often report sudden palpitations, a sensation of rapid heartbeat, chest discomfort, shortness of breath, dizziness, or even fainting. These episodes can last from a few seconds to several hours, and their frequency varies from person to person. Some may experience isolated episodes, while others might suffer recurrent episodes that interfere significantly with daily activities.
Supraventricular tachycardia is defined as Diagnosis of SVT involves a detailed medical history and physical examination, followed by electrocardiogram (ECG) recording during an episode, which is critical for confirmation. Sometimes, ambulatory ECG monitoring, such as Holter or event recorders, is used to capture episodes that do not occur during the clinical visit. In certain cases, electrophysiological studies may be performed to precisely identify the arrhythmia’s origin and guide treatment options.
Supraventricular tachycardia is defined as Management of SVT depends on the frequency and severity of episodes, as well as the patient’s overall health. Acute episodes can often be terminated with vagal maneuvers—techniques such as the Valsalva maneuver or carotid sinus massage that stimulate the vagus nerve to slow the heart rate. In some cases, medications like adenosine, beta-blockers, or calcium channel blockers are used to control or prevent episodes. For recurrent or persistent SVT, catheter ablation—a minimally invasive procedure that destroys the abnormal electrical pathway—is often considered a definitive treatment with high success rates.
Supraventricular tachycardia is defined as While SVT is generally not life-threatening, it can cause significant discomfort and impact quality of life if episodes are frequent or severe. Patients with SVT should work closely with their healthcare providers to develop a tailored management plan. Understanding triggers—such as caffeine, alcohol, stress, or certain medications—and adopting lifestyle modifications can also reduce the frequency of episodes.
Supraventricular tachycardia is defined as In summary, supraventricular tachycardia is a rapid heart rhythm originating above the ventricles, characterized by sudden episodes of a fast, regular heartbeat. Although it can be alarming, effective treatments are available, and many individuals live normal lives with appropriate management.
