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1.
Mayo Clin Proc ; 81(4): 545-8, 2006 Apr.
Article in English | MEDLINE | ID: mdl-16610576

ABSTRACT

The Food and Drug Administration has banned the sale of ephedrine-based weight-loss products because of their association with many cardiovascular adverse effects. Bitter orange is now being used as a stimulant in "ephedra-free" weight-loss supplements but was recently implicated in adverse cardiovascular sequelae. To our knowledge, this report describes the first case of variant angina associated with bitter orange in a dietary supplement.


Subject(s)
Angina Pectoris, Variant/chemically induced , Dietary Supplements/poisoning , Synephrine/poisoning , Vasoconstrictor Agents/poisoning , Angina Pectoris, Variant/diagnosis , Diagnosis, Differential , Electrocardiography , Humans , Male , Middle Aged
2.
J Cardiovasc Pharmacol Ther ; 8(3): 237-46, 2003 Sep.
Article in English | MEDLINE | ID: mdl-14506549

ABSTRACT

Electrical storm is defined as a recurrent episode of hemodynamically destabilizing ventricular tachyarrhythmia that usually requires electrical cardioversion or defibrillation. We describe three cases presenting with electrical storm under differing circumstances: (1) a 57-year-old man with ST-elevation myocardial infarction within 1 week of a posterior circulation stroke who developed refractory sustained ventricular tachycardia 10 days after an acute myocardial infarction; (2) a 65-year-old man who developed polymorphic ventricular tachycardia and ventricular fibrillation following dobutamine echocardiography; and (3) a 20-year-old woman who developed intractable ventricular fibrillation following an overdose of a weight-reduction pill. The management of electrical storm is discussed, and evolving literature supporting the routine use of intravenous amiodarone and beta-blockers in place of intravenous lidocaine is critically examined.


Subject(s)
Amiodarone/administration & dosage , Anti-Arrhythmia Agents/administration & dosage , Tachycardia, Ventricular/drug therapy , Ventricular Fibrillation/drug therapy , Adrenergic beta-Antagonists/therapeutic use , Adult , Aged , Amiodarone/therapeutic use , Anti-Arrhythmia Agents/therapeutic use , Anti-Obesity Agents/poisoning , Brain Infarction/complications , Clinical Trials as Topic , Death, Sudden, Cardiac , Echocardiography, Stress/adverse effects , Electric Countershock , Electrocardiography , Female , Humans , Injections, Intravenous , Lidocaine/administration & dosage , Lidocaine/therapeutic use , Male , Middle Aged , Synephrine/poisoning , Tachycardia, Ventricular/etiology , Tachycardia, Ventricular/therapy , Ventricular Fibrillation/etiology , Ventricular Fibrillation/therapy
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