A blog designed to help medical students and doctors preparing for undergraduate and postgraduate exams
Tuesday, October 11, 2016
Regarding The Antipsychotic Drug Haloperidol...?
Which of the following statements is true regarding the use of haloperidol?
A) The drug has been approved for intravenous (IV) use.
B) Haloperidol is considered safe in those with a known seizure disorder.
C) The drug can cause prolongation of the QT interval.
D) Electrocardiogram (ECG) monitoring is not necessary when the drug is given intravenously.
E) None of the above
Answer And Discussion:
The answer is C. The drug can cause prolongation of the QT interval
Although haloperidol has not been FDA approved for IV use, it is commonly used intravenously and is generally thought to be safe.
Haloperidol may alter cardiac conduction and prolong the QT interval leading to life-threatening arrhythmias. It should be used with caution or avoided in patients with electrolyte abnormalities. Electrocardiographic monitoring is necessary. Haloperidol should be avoided if possible in patients with a known seizure disorder.
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