These cell clusters in the central part of the sinus node are all around the sinus node artery.

窦房结中心区的细胞集落，全都存在于窦房结动脉周围。

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Objective To assess the diagnostic value of the atropine test and sit-up exercise for sinus node function.

目的评定阿托品药物试验联合仰卧起坐运动对窦房结功能的诊断价值。

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The clamping fixation method and followed by 40% formalin cotton pellet was used to immerse the sinus node.

本研究采用钳夹固定法及40%福尔马林棉球浸敷窦房结区法，建立家兔病态窦房结模型。

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Single lead VDD pacing in those with intact sinus node function (i.e. a young patient with congenital AV block) gets a class IIa indication.

FORBES: Overview of the New HRS/ACCF Pacemaker Guidelines

Sinus node dysfunction (SND) gets a clear endorsement for dual chamber (DDD) pacing with a class I indication, even in those without manifest AV conduction abnormalities.

FORBES: Overview of the New HRS/ACCF Pacemaker Guidelines