Key result
QT-prolonging drugs linked to potentially lethal TdP in elderly polymedicated patients.
Why the study?
Does the use of QT-prolonging drugs cause Long-QT and Torsades de Pointes in elderly polymedicated patients?
Does the use of QT-prolonging drugs cause Long-QT and Torsades de Pointes in elderly polymedicated patients?
Polymedication in elderly patients with QT-prolonging drugs requires careful recognition and monitoring to prevent potentially lethal ventricular arrhythmias like Torsades de Pointes.
May heighten TdP vigilance in elderly polypharmacy; leaves open arrhythmia incidence in larger cohorts.
Polymedication affects one in three patients older than 65 years.1 Its risks are widely known and are specially related to pharmacological interactions.2 One of these potential risks is the appearance of malignant ventricular arrhythmias when drugs that prolong QT interval are prescribed, including antibiotics, antidepressants, antiemetics, psychotropic medication or even antiarrhythmic drugs.3-6 The development of ventricular arrhythmias such as Torsades de Pointes (TdP), typically related to QT prolongation, is a potentially lethal complication. It is mandatory to recognize the drugs that can cause it, avoiding their joint use or planning a close monitoring in case their combination cannot be avoided.
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García‐Fuertes et al. (2015) conducted a review in Drug-Induced Long-QT and Torsades de Pointes. QT-prolonging drugs was evaluated on Malignant ventricular arrhythmias and Torsades de Pointes (TdP). Prescription of QT-prolonging drugs in elderly polymedicated patients can cause potentially lethal ventricular arrhythmias such as Torsades de Pointes, necessitating careful monitoring or avoidance.
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