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Pharmacology Chemotherapy: General Principles b271d00f

Sparfloxacin and astemizole can cause:

A
Ventricular arrhythmia
B
Myopathy
C
Electrolyte imbalance
D
Nephropathy
High-Yield Explanation
Ans. (A) Ventricular arrhythmia(Ref: KDT 8/e p764)Both sparfloxacin and astemizole blocks cardiac K+ channels in high concentration. This property may result in torsades de pointes (polymorphic ventricular tachycardia).Other drugs causing torsades de pointes are:TerfenadineCisaprideZiprasidoneGrepafloxacin

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