Hi All,
Wondering if anyone has come across any specific recommendations when switching from amiodarone to dronedarone. The issue is that you do not want to double up on anti-arrhythmics because of the potential for Torsades and QT prolongation. Normally you would hold a drug for around 3 half-lives before initiating the new therapy, but this becomes an issue because of amiodarone's huge half-life (up to 55 days!). A search through Medline didn't have much and neither did the manufacturer. Any thoughts or experiences with this would be appreciated. Thanks so much!
Wondering if anyone has come across any specific recommendations when switching from amiodarone to dronedarone. The issue is that you do not want to double up on anti-arrhythmics because of the potential for Torsades and QT prolongation. Normally you would hold a drug for around 3 half-lives before initiating the new therapy, but this becomes an issue because of amiodarone's huge half-life (up to 55 days!). A search through Medline didn't have much and neither did the manufacturer. Any thoughts or experiences with this would be appreciated. Thanks so much!
