An Osborne wave can also occur from hypercalcemia. Hypercalcemia shortens the QT interval. Dextrocardia shows negative QRS complex in lead I with negative P and T wave in this lead. There is low ...
A prolonged QT interval has a variety of causes and can be a very serious ECG finding, as it may lead to the potentially fatal arrhythmia polymorphic ventricular tachycardia (Torsades de Pointes).
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