Tachycardia is a broad term for a variety of rapid cardiac arrhythmias.1,2 It is commonly associated with underlying cardiac abnormalities.1,2 If left untreated, in serious cases, this can lead to heart failure or cardiac arrest.3,4
TREATING A TACHYCARDIA
Patients presenting with a tachycardia should be treated according to symptoms and etiology.5 Adenosine, beta-blockers, or calcium channel blockers may be used as first-line treatment,1,6 although pharmacological treatment is poorly defined for an atrial tachycardia.7 For drug-resistant tachycardias, cardioversion may be considered.1,2

Implantable cardioverter defibrillator (ICD) devices are indicated in adult patients who have already survived a cardiac arrest or are at a high risk of sudden cardiac death (SCD) due to ventricular tachycardia (VT) or ventricular fibrillation (VF).8
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- NHS. Heart rhythm problems (arrhythmia). Available at: www.nhs.uk/conditions/arrhythmia/. Accessed June 11, 2026.
- American Heart Association. Tachycardia: Fast heart rate. Available at: https://www.heart.org/en/health-topics/arrhythmia/about-arrhythmia/tachycardia--fast-heart-rate. Accessed June 11, 2026.
- Mayo Clinic. Supraventricular tachycardia – Symptoms and causes. Available at: www.mayoclinic.org/diseases-conditions/supraventricular-tachycardia/symptomscauses/syc-20355243. Accessed June 11, 2026.
- Mayo Clinic. Ventricular tachycardia – Symptoms and causes. Available at: www.mayoclinic.org/diseases-conditions/ventricular-tachycardia/symptoms-causes/syc-20355138. Accessed June 11, 2026.
- Zeppenfeld K, Tfelt-Hansen J, de Riva M, et al. 2022 ESC Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death. Eur Heart J. 2022;43(40):3997–4126. doi: 10.1093/eurheartj/ehac262.
- Cleveland Clinic. Sinus tachycardia: Causes, symptoms & treatment. Available at: my.clevelandclinic.org/health/diseases/23210-sinus-tachycardia. Accessed June 11, 2026.
- Issa Z, Miller J, Zipes D. (2012). Clinical Arrhythmology and Electrophysiology, 212–238. Philadelphia, PA: Saunders Elsevier.
- Avant™, Neutrino™ NxT, Gallant™, Entrant™ Manual. ARTEN600342965_C. February 20, 2026.
™ indicates a trademark of the Abbott group of companies.