منابع مشابه
Electrocardiographic manifestations: electrolyte abnormalities.
Because myocyte depolarization and repolarization depend on intra- and extracellular shifts in ion gradients, abnormal serum electrolyte levels can have profound effects on cardiac conduction and the electrocardiogram (EKG). Changes in extracellular potassium, calcium, and magnesium levels can change myocyte membrane potential gradients and alter the cardiac action potential. These changes can ...
متن کاملDrug Induced T-wave Abnormalities: Beyond QTc
1. Graff C, Toft E, Matz J, Kanters JK, AndersenMP, Nielsen J, Struijk JJ. Covariate analysis of T-wave morphology and QTc prolongation: Newinsights into drug-induced ECG changes.WorldPharma, Copenhagen, Denmark (2010)2. Graff C, Toft E, Matz J, Kanters JK, AndersenMP, Nielsen J, Struijk JJ. Covariate assessment ofT-wave morphology and QTc prolongation: Newopport...
متن کاملT-wave Alternans Dependency on T-wave Amplitude in Exercise Electrocardiographic Recordings
T-wave alternans (TWA), an electrophysiologic phenomenon which manifests as an everyother-beat alternation of the electrocardiographic (ECG) T-wave amplitude or shape, is generally associated to malignant ventricular arrhythmias and sudden cardiac death. TWA is usually identified with no adjustment for T-wave amplitude. However, a possible dependency of TWA on T-wave amplitude has been recently...
متن کاملMagnetocardiographic evaluation of nonarrhythmogenic flecainide-induced electrocardiographic T-wave inversion
Flecainide is used for pharmacological conversion of atrial fibrillation (AF), to maintain sinus rhythm in patients with paroxysmal AF and/or supraventricular tachycardia, or to prevent catecholaminergic polymorphic ventricular tachycardia (1, 2). However, flecainide has been shown to be proarrhythmic in vitro (3) and was associated with threefold increase in arrhythmic death in Cardiac Arrhyth...
متن کاملElectrocardiographic abnormalities in cerebrovascular accidents.
In order to assess the relationship of electrocardiographic (ECG) changes in acute cerebrovascular accidents (CVA) to the locations of the cerebral lesions, ECG records and brain computerized tomographic (CT) scans which were taken within 48 hours of CVA onset were examined in 39 patients without heart disease and/or treatment with cardiovascular drugs. The ECG was normal in 25% (3/12) of basal...
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ژورنال
عنوان ژورنال: Singapore Medical Journal
سال: 2013
ISSN: 0037-5675
DOI: 10.11622/smedj.2013218