Pathogenesis (development of disease)
Supraventricular tachycardia (SVT; atrial tachycardia) originates in the atrium or valvular plane or conduction system (atrioventricular [AV] node, His bundle). The most common trigger is intraatrial reentry (IART). Other causes include depolarizations of alternative foci.
Etiology (Causes)
Disease-related causes.
Endocrine, nutritional, and metabolic diseases (E00-E90).
- Hyperthyroidism (overactive thyroid gland).
Cardiovascular system (I00-I99)
- Heart failure (cardiac insufficiency)
- Heart valve defect (valvular vitium), unspecified
- Myocardial infarction (heart attack)
- Myocarditis (inflammation of the heart muscle)
- WPW syndrome (Wolff-Parkinson-White syndrome) – cardiac arrhythmia caused by an electrically circular excitation between the atria and ventricles.
Injuries, poisonings, and other consequences of external causes (S00-T98).
- Shock, unspecified
Medication
- Digitalisintoxication – poisoning with a drug used for cardiac arrhythmias and heart failure (cardiac insufficiency).
