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Assumption of pacemaker function of the heart by a subsidiary focus as a result of its own increased automaticity; for example, accelerated junctional pacemaker takes command when it exceeds the sinus rate.
[L. usurpo, pp. -atus, to seize]
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
The creation of wealth is always a contribution of freethinking and acting people and not usurpers in office by stealth.
The fourth usurper used to talk about 'Chain of Command' and its importance.
But poor old Richard has been cast as a villain, a usurper and a murderer whose contorted body reflected a twisted mind.
of London's Donmar Warehouse he has chosen Shakespeare's "Richard II," an austere history play about an old regime overthrown by a usurper. But instead of brandishing guns, video or an overarching concept to signal "relevance," he forces audiences to become active in the theatrical experience simply by gluing them to the text, the action and, crucially, the interaction of a uniformly strong cast led by a intense Eddie Redmayne.
FLAG DAY RUSSIA 1485: The Battle of Bosworth Field was fought in Leicestershire and Richard III was butchered as he tried to reach usurper Henry Tudor.
This first story in a series tells of his struggles with self doubt but with an increasing strength of will to overcome the evil of the usurper of the throne, the werelion.
Beautifully illustrated with primary color-prairie images of the buffalo, "The Enchanted Buffalo" tells the tale of a greedy buffalo usurper bull named Barrag who takes control of a leaderless tribe of mighty buffalo.
"The martial law was beyond the mandate of the constitution and will be invalid for eternity," and said "a usurper is a usurper." It is deemed that the judgement squarely blamed both the Generals have acted as a usurper to grab the state power.
Without wasting a moment, the man we came to call "the Usurper" tucked Boehlmer's jacket and pants under his arm, and, with surprising civility, apologized for his roughness.
When her father is murdered, a usurper takes to the throne and Torina is forced to flee and rely on both to save her kingdom.
If there is a weak link it's Goss, who fails to convey the rage and frustration of his misguided usurper.
Mashaei who was conveying the humanitarian attitude of the Iranian nation said that the friendship with the Jewish people has nothing to do with the "usurper" regime of Tel Aviv.