CONTEXT
Women have a higher incidence of torsades de pointes than men, but it is not known if the risk of drug-induced torsades de pointes varies during the menstrual cycle.
OBJECTIVES
To determine… (More)
Acute caffeine in subjects who do not normally ingest methylxanthines leads to increases in blood pressure, heart rate, plasma epinephrine, plasma norepinephrine, plasma renin activity, and urinary… (More)
Tamoxifen is an antiestrogen drug commonly used to treat breast cancer and has been shown to cause prolongation of the electrocardiographic QT interval in humans. Because QT prolongation could… (More)
BACKGROUND
QT interval-prolonging drug-drug interactions (QT-DDIs) may increase the risk of life-threatening arrhythmia. Despite guidelines for testing from regulatory agencies, these interactions… (More)
Two of the nonsedating antihistaminic drugs, terfenadine and astemizole, have recently been recognized in rare cases to induce the syndrome of torsades de pointes, i.e. QT interval prolongation and… (More)
Quinidine therapy is one of the most common causes of the acquired long QT syndrome and torsade de pointes. In reviewing clinical data in 24 patients with the quinidine-associated long QT syndrome,… (More)
BACKGROUND
We sought to determine the extent of potentially inappropriate outpatient prescribing for elderly patients, as defined by the Beers revised list of drugs to be avoided in elderly… (More)
BACKGROUND
Recent case series have associated the synthetic opioid, methadone, with QT prolongation and torsades de pointes (TdP) ventricular arrhythmia.
STUDY OBJECTIVE
To review and analyze… (More)
BACKGROUND
Atrial fibrillation (AF) is frequently associated with atrial dilatation caused by pressure or volume overload. Stretch-activated channels (SACs) have been found in myocardial cells and… (More)
The relationship between debrisoquine metabolic phenotype and the pharmacokinetics and pharmacodynamics of propafenone was studied in 28 patients with chronic ventricular arrhythmias (22 extensive… (More)