Six patients had frequent episodes of atrioventricular junctional rhythm during long-term oral verapamil therapy. In no instance was this rhythm associated with symptoms or adverse effects, nor did it force a discontinuation of therapy or a reduction in verapamil dosage. In the patient receiving oral verapamil therapy, atrioventricular junctional rhythm should not be considered a manifestation of drug toxicity.
Walker WS, Winniford MD, Mauritson DR, Johnson SM, Hillis LD. Atrioventricular Junctional Rhythm in Patients Receiving Oral Verapamil Therapy. JAMA. 1983;249(3):389–390. doi:10.1001/jama.1983.03330270053033
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