Medication used for slowing down the ventricular response rate is chosen individually, and the dose is adjusted so that the ventricular rate at rest is below 110/min and the patient is symptomless. Stricter rate limits are applied in symptomatic patients. In these patients, the target rate is 60–80/min at rest and 90–115/min on light exertion like walking. If one drug is not sufficient, a combination may be used. If that isn't effective either, the patient is referred for consultation to a cardiologist specialized in rhythmology in order to assess the feasibility of invasive treatment (pacemaker and atrioventricular node catheter ablation).
Source: Finnish Current Care Guideline 2012