electrical alternans

e·lec·tri·cal al·ter·nans

electrical alternation of the heart.

electrical alternans

Cardiology Marked swings in the QRS complex amplitude, which occur every 2 to 3 beats, caused by 'circus movement' in the myocardium Etiology Cardiac tamponade, pericardial effusion, pneumopericardium, cardiac muscle dysfunction, and paroxysmal SVT; EA may presage sudden cardiac death, and may precede V Fib in Pts undergoing coronary angioplasty or those with Prinzmetal's angina, congenital prolonged QT syndrome, acute MI, catecholamine excess, electrolyte derangements; EA affecting the ST segment and T wave is common in Pts at risk for ventricular arrhythmias–VAs and may be a noninvasive marker of susceptibility to VAs

e·lec·tri·cal al·ter·nans

(ĕ-lek'tri-kăl awl-ter'nanz) Alternation in the amplitude of P waves, QRS complexes, or T waves as observed by electrocardiography.

electrical alternans

Beat-to-beat changes in one or more portions of the electrocardiogram.

单词	electrical alternans
释义	electrical alternans e·lec·tri·cal al·ter·nans electrical alternation of the heart. electrical alternans Cardiology Marked swings in the QRS complex amplitude, which occur every 2 to 3 beats, caused by 'circus movement' in the myocardium Etiology Cardiac tamponade, pericardial effusion, pneumopericardium, cardiac muscle dysfunction, and paroxysmal SVT; EA may presage sudden cardiac death, and may precede V Fib in Pts undergoing coronary angioplasty or those with Prinzmetal's angina, congenital prolonged QT syndrome, acute MI, catecholamine excess, electrolyte derangements; EA affecting the ST segment and T wave is common in Pts at risk for ventricular arrhythmias–VAs and may be a noninvasive marker of susceptibility to VAs e·lec·tri·cal al·ter·nans (ĕ-lek'tri-kăl awl-ter'nanz) Alternation in the amplitude of P waves, QRS complexes, or T waves as observed by electrocardiography. electrical alternans Beat-to-beat changes in one or more portions of the electrocardiogram.
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