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pharm Q - boggart - ArchivalUser - 11-25-2006

A 24yo woman who takes antihistamine (terfenadine) for recurrent urticaria collapses suddenly in the hospital concourse. The resuscitation team notes polymorphic VT (torsade de pointes). A drug-induced arrhythmia is suspected.

Which of the following is most likely to have caused the interaction with the terfenadine?

A- combined OCP
B- grapefruit juice
C-ibuprofen
D-acetoaminophen
E-st john's wort


0 - ArchivalUser - 11-25-2006

b or e??b


0 - ArchivalUser - 11-28-2006

tough one


0 - ArchivalUser - 11-28-2006

B- grapefruit juice??
is grapefruit juice P450 inducer or inhibitor?


0 - ArchivalUser - 11-28-2006

B- grapefruit juice----inhibit cythcrome p450 --inc level terfenadine---torsad