alternans
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alternans /al·ter·nans/ (awl-ter´nanz) [L.]

1. alternating; see pulsus alternans.

2. alternation.

electrical alternans alternating variations in the amplitude of specific electrocardiographic waves over successive cardiac cycles.

mechanical alternans alternation of the heart, particularly in contrast to electrical alternans.

pul´sus alternans see under pulsus.

total alternans pulsus alternans in which alternating beats are so weak as to be undetected, causing apparent halving of the pulse rate.

al·ter·nans (ôl-tûr

)

adj.

Alternating, as in heart contractions.

Alternation in the contractions of the heart.

alternans

[ôl′tərnənz]

Etymology: L, alternare, to alternate

See pulsus alternans.

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alternans (redirected from mechanical alternans)

alternans
(redirected from mechanical alternans)