This normal variation in rhythm is known as sinus arrhythmia.
节律的这种正常变化称为窦性心律失常.
Sinus arrhythmia appeared in 15 % of beagle dogs.
beagle犬存在着窦性心律不齐,比例为15%.
Clinical Observation of Biofeedback Therapy in Sinus Arrhythmia
生物反馈疗法治疗窦性心律失常的临床观察
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