What is the treatment for supraventricular tachy-dysrhythmias or bradydysrhythmias?

What is the treatment for supraventricular tachy-dysrhythmias or bradydysrhythmias?

The treatment of dysrhythmias in patients with AS must be accomplished rapidly to prevent hemodynamic decom-pensation. Cardioversion should be considered as the first-line therapy in the unstable patient with supraventricular tachydysrhythmias. In the stable patient, a therapeutic diag-nostic maneuver (vagal stimulation, adenosine) should be attempted. When the exact underlying rhythm is identified, treatment usually consists of β-adrenergic blockers (e.g., esmolol), amiodarone, or cardioversion depending upon the rhythm. In the patient with impaired cardiac function (ejec-tion fraction < 40%, CHF), or when ventricular tachycardia cannot be ruled out, amiodarone is the preferred drug.

Bradydysrhythmias should be treated with anticholiner-gics, combined α- and β-adrenergic agonists, or atrioven-tricular sequential pacing. The ideal heart rate is probably between 70 and 80 beats per minute. This allows for ade-quate diastolic filling while providing sufficient cardiac output in a heart with a relatively fixed stroke volume.