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Loss of rhythm; denoting especially an irregularity of the heartbeat. See also entries underrhythm Cf. dysrhythmia. [G. a- priv. + rhythmos, rhythm]
cardiac a. See cardiac dysrhythmia.
continuous a. obsolete term for atrial fibrillation.
juvenile a. sinus a
nonphasic sinus a. sinus a. in which variations in rhythm are not related to the phases of respiration.
perpetual a. an obsolete term for atrial fibrillation.
phasic sinus a. sinus a. in which the irregularity is related to the phases of respiration, the rate being faster in inspiration and slower in expiration.
respiratory a. phasic sinus a. or any other rhythm fluctuation induced by respiratory fluctuation.
sinus a. rhythmic, repetitive irregularity of the heartbeat, the heart being under the control of its normal pacemaker, the sinoatrial node.juvenile a;
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