Supraventricular tachycardia, also called SVT, is a type of abnormal heart rhythm (arrhythmia) that is characterised by a rapid heartbeat originating above the heart's ventricles. This is a typically harmless condition that doesn't last very long. This article will delve into the methods of diagnosis of Supraventricular Tachycardia.
What are The Diagnosis of Supraventricular Tachycardia?
Supraventricular Tachycardia diagnosis is very comprehensive and initially starts with evaluating the symptoms and medical history of the patient. This initial discussion also helps in distinguishing SVT from some other conditions in which there is a similarity in symptoms, such as anxiety or panic disorder. Other tests include:
- Blood tests are done more to rule out conditions such as thyroid disorders that could mimic SVT and to check electrolyte levels or evidence of damage to the heart.
- The backbone of SVT diagnosis is the Electrocardiogram (ECG or EKG). In addition to displaying the heart's rhythm and the timing of electrical signals, it records the heart's electrical activity. Accurately diagnosing intermittent SVT requires continuous monitoring of a 12-lead electrocardiogram (ECG). It may be missed on a 12-lead ECG but can be detected if the Holter monitor is used. This records the occurrence of transient arrhythmias. An event recorder worn for weeks permits patients to log the heart's electrical activity on the occurrence of symptoms.
- The echocardiogram uses sound waves to create images of the heart and shows structural abnormalities, valve functions, and overall heart performance. It is essential for assessing the heart's pumping action and identifying underlying conditions contributing to SVT.
- Implantable loop recorders placed under the skin offer long-term monitoring for persistent or elusive arrhythmias. They record abnormal rhythms over extended periods.
- An exercise stress test can provoke SVT and monitor the heart's response to physical stress. It is also useful for patients with exercise-induced episodes. The tilt table test evaluates the heart and nervous system's response to postural changes and it simulates the shift from sitting or lying to standing— it is useful for patients experiencing fainting or lightheadedness with their SVT.
- An Electrophysiological (EP) study is another definitive test where catheters are introduced into the heart in order to accurately map the electrical system of the heart. It will also show the exact areas responsible for abnormal electrical signals.
Conclusion
Diagnosing SVT involves a series of precise tests, ranging from ECGs to EP studies. Each of those is crucial to understanding your heart's rhythm. Consider purchasing a health insurance plan that provides essential financial support for covering the extensive costs associated with diagnostic tests and subsequent management.