Hemodynamic Consequences of Cardiac Arrhythmias
Any arrhythmia whatever its site of origin and etiology entails some hemodynamic consequences . To demonstrate these hemodynamic effects, several methods of assessment of cardiac performance can be used. Among them, measurements of cardiac output by thermodilution, dye-dilution or isotopic techniques can be helpful, but only if the arrhythmia is sustained and lasts long enough to allow a proper acquisition of data. To study the instantaneous variations of left ventricular stroke volume induced by sporadic arrhythmic phenomena, such as isolated premature beats, echocardiography (M-mode or 2-D) appears as a safe noninvasive and precise technique allowing to investigate beatto-beat variations of cardiac performance [2–7].
KeywordsStroke Volume Ventricular Tachycardia Left Bundle Branch Block Supraventricular Tachycardia Ventricular Pace
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