antiarytmien
Antiarytmien are medicines used to treat abnormal heart rhythms by altering the heart's electrical activity. They may be used to suppress both atrial and ventricular arrhythmias and to restore or maintain normal rhythm (rhythm control) or to slow the heart rate (rate control). Selection depends on the rhythm type, underlying heart disease, and other medical factors.
They are commonly classified by the Vaughan Williams system into four classes: Class I sodium channel blockers
Mechanisms include slowed conduction, prolonged refractoriness, suppression of ectopic activity, and reduced sympathetic drive. Indications depend
Risks include proarrhythmia such as torsades de pointes, hypotension, bradycardia, and conduction block, plus non-cardiac toxicities