https://aipc63.files.wordpress.com/2013/02/qt-et-psychotropes-beach-et-coll-2013.pdf

QTc prolongation, torsades de pointes, and psychotropic medications.

We comprehensively reviewed published literature to determine whether it supported the link between corrected QT (QTc) interval prolongation and torsade de pointes (TdP) for the 11 second-generation antipsychotics and seven second-generation antidepressants commonly implicated in these complications. Using PubMed and EMBASE, we identified four thorough QT studies (one each for iloperidone, ziprasidone, citalopram, and escitalopram), 40 studies specifically designed to assess QTc interval prolongation or TdP, 58 publications based on data from efficacy and safety trials, 18 toxicology studies, and 102 case reports. Thorough QT studies, QTc prolongation-specific studies, and studies based on efficacy and safety trials did not link drug-associated QTc interval prolongation with TdP. They only showed that the drugs reviewed caused varying degrees of QTc interval prolongation, and even that information was not clear and consistent enough to stratify individual drugs for this risk. The few toxicology studies provided valuable information but their findings are pertinent only to situations of drug overdose. Case reports were most informative about the drug–QTc interval prolongation–TdP link. At least one additional well established risk factor for QTc prolongation was present in 92.2 % of case reports. Of the 28 cases of TdP, six (21.4 %) experienced it with QTc interval <500 ms; 75 % of TdP cases occurred at therapeutic doses. There is little evidence that drug-associated QTc interval prolongation by itself is sufficient to predict TdP. Future research needs to improve its precision and broaden its scope to better understand the factors that facilitate or attenuate progression of drug-associated QTc interval prolongation to TdP.

QTc interval prolongation and torsade de pointes associated with second-generation antipsychotics and antidepressants: a comprehensive review.

Citalopram, QTc Interval Prolongation, and Torsade de Pointes. How Should We Apply the Recent FDA Ruling?

Purpose
Citalopram is a selective serotonin reuptake inhibitor (SSRI) antidepressant that is widely used in clinical practice. Recent data have indicated that high therapeutic citalopram doses may cause electrocardiographic abnormalities, and the regulatory authorities have amended its licenced dosage. The present manuscript reviews the available data concerning citalopram and cardiac toxicity.

Citalopram and cardiac toxicity

Citalopram, QTc Prolongation, and Torsades de Pointes.

Selective serotonin reuptake inhibitors are widely prescribed drugs without recognized cardiovascular risk. We report the case of a 54-year-old patient who developed QTc interval prolongation, followed by ventricular fibrillation episodes, 10 hours after admission to the ICU, in the setting of a citalopram overdose. Citalopram plasma values dropped from 5.88 to 0.34 mg/L at 9 days postadmission. The patient was treated by oral activated charcoal, and final outcome was favorable.

Drug monitoring of a case of citalopram overdosage.

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Drug monitoring of a case of citalopram overdosage.