Articles: qt-prolongation.
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Circ Arrhythm Electrophysiol · Jun 2020
Multicenter Study Observational StudyThe Effect of Chloroquine, Hydroxychloroquine and Azithromycin on the Corrected QT Interval in Patients with SARS-CoV-2 Infection.
The novel SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) is responsible for the global coronavirus disease 2019 pandemic. Small studies have shown a potential benefit of chloroquine/hydroxychloroquine±azithromycin for the treatment of coronavirus disease 2019. Use of these medications alone, or in combination, can lead to a prolongation of the QT interval, possibly increasing the risk of Torsade de pointes and sudden cardiac death. ⋯ In the largest reported cohort of coronavirus disease 2019 patients to date treated with chloroquine/hydroxychloroquine±azithromycin, no instances of Torsade de pointes, or arrhythmogenic death were reported. Although use of these medications resulted in QT prolongation, clinicians seldomly needed to discontinue therapy. Further study of the need for QT interval monitoring is needed before final recommendations can be made.
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Pulm Pharmacol Ther · Apr 2018
Randomized Controlled Trial Multicenter Study Comparative StudyCardiovascular safety profile of a fixed-dose combination of glycopyrrolate and formoterol fumarate delivered via metered dose inhaler using co-suspension delivery technology.
Glycopyrrolate/formoterol fumarate (GFF) metered dose inhaler (MDI) is a fixed-dose combination of the long-acting muscarinic antagonist (LAMA), glycopyrrolate (GP), and the long-acting β2-agonist (LABA), formoterol fumarate (FF), delivered via metered dose inhaler using innovative co-suspension delivery technology. Here we report the results of two studies that examined the cardiovascular safety of GFF MDI. ⋯ No clinically significant effects on cardiovascular safety occurred at therapeutic or supratherapeutic doses of GFF MDI, apart from a small and transient increase in heart rate following supratherapeutic dose of GFF MDI 144/38.4 μg. Furthermore, there were no unexpected safety findings reported in either healthy volunteers or patients with COPD.
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Multicenter Study Observational Study
Racial susceptibility for QT prolongation in acute drug overdoses.
QT prolongation independently predicts adverse cardiovascular events in suspected poisoning. We aimed to evaluate the association between race and drug-induced QT prolongation for patients with acute overdose. ⋯ We found significant racial susceptibility to drug-induced QT prolongation in this large urban study of acute overdoses.