ArticleHeart and vessels2016
Secondly ECG recordings in the emergency room revealed Garenoxacin-induced abnormal QT interval prolongation in a patient with multiple syncopal attacks.
Article in Heart and vessels, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
A 73-year-old woman first visited our emergency room with multiple syncopal attacks. Before admission, she had received an antibiotic (Garenoxacin) for 3 days from a local clinic. First electrocardiogram (ECG) showed no ST-segment deviation but mild QT interval prolongation with a positive U wave. Second ECG recording 3 h later showed slightly slower heart rate and revealed marked QTU interval prolongation suggesting the cause of her syncopal attacks. After cessation of Garenoxacin, the QTU interval prolongation shortened. However, both epinephrine infusion and treadmill exercise test reproduced similar QTU interval prolongation and T wave deformities. Later, genetic analysis demonstrated that this patient had a mutation in KCNH2 gene, and she was diagnosed as a type-2 long-QT syndrome which was accentuated by use of garenoxacin. At the emergency out-patient clinic, repetitive ECG recordings can be useful and should be considered in order to identify the cause of syncopal attacks in patients who were prescribed antibiotics and had mild QT interval abnormalities.
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