Drug Interactions between Isuprel Mistometer and ribociclib

GENERALLY AVOID: Ribociclib can cause dose-related prolongation of the QT interval. Theoretically, coadministration with other agents that can prolong the QT interval may result in additive effects and increased risk of ventricular arrhythmias including torsade de pointes and sudden death. In general, the risk of an individual agent or a combination of agents causing ventricular arrhythmia in association with QT prolongation is largely unpredictable but may be increased by certain underlying risk factors such as congenital long QT syndrome, cardiac disease, and electrolyte disturbances (e.g., hypokalemia, hypomagnesemia). In addition, the extent of drug-induced QT prolongation is dependent on the particular drug(s) involved and dosage(s) of the drug(s).

MANAGEMENT: Coadministration of ribociclib with other drugs that can prolong the QT interval should generally be avoided. However, if concomitant use is required, caution and clinical and laboratory monitoring are recommended. ECGs should be assessed prior to initiation of treatment, during treatment when clinically necessary, and more frequently if QTcF prolongation occurs at any time during treatment. Ribociclib should be permanently discontinued if the QTcF interval prolongation is either greater than 500 msec or there is a greater than 60 msec change from baseline and associated with any of the following: Torsades de Pointes, polymorphic ventricular tachycardia, unexplained syncope, or signs/symptoms of serious arrhythmia. Patients should be advised to seek prompt medical attention if they experience symptoms that could indicate the occurrence of torsade de pointes such as dizziness, lightheadedness, fainting, palpitation, irregular heart rhythm, shortness of breath, or syncope.

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