- electrical alternans
- alternating variations in the amplitude of specific electrocardiographic waves over successive cardiac cycles.
Medical dictionary. 2011.
electrical alternans
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Electrical alternans — is an electrocardiographic phenomenon of alternation of QRS complex amplitude or axis between beats. It is seen in cardiac tamponade and is thought to be related to changes in the ventricular electrical axis due to fluid in the pericardium.ee… … Wikipedia
alternans — Alternating; often used substantively for alternation of the heart, either electrical or mechanical. Alternating; used as a noun in the sense of pulsus a.. [L.] auditory a. SYN: auscultatory a.. auscultatory a. alternation in the intensity of… … Medical dictionary
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alternation of the heart — alternating variation in the intensity of the heartbeat or pulse over successive cardiac cycles of regular rhythm. Called also mechanical alternans. Cf. electrical alternans … Medical dictionary
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