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PROLONGED QT SEGMENT ON ECG [QT >50% OF RR INTERVAL] |
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cardiovascular disease: |
ischaemic heart disease rheumatic carditis pulmonary embolism mitral valve prolapse |
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metabolic / endocrine disease: |
hypocalcaemia hypokalaemia (equivocal) hypomagnesaemia hypothyroidism hypothermia [+ J waves]liquid protein diets anorexia nervosa |
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heredo-familial syndromes: |
Jervell-Lange-Nielson syndrome [+ deafness] Romano-Ward syndrome congenital prolonged QT interval (isolated) |
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drugs (with class III anti-arrhythmic activity): |
amiodarone (III) sotalol (III) bretylium (III) bepridil prenylamine erythromycin |
disopyramide (IA) procainamide (IA) tricyclics phenothiazines quinidine |
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other: |
raised intracranial pressure |
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