sinuatrial (S-A) nodal branch of right coronary artery

(redirected from sinus node artery)

sinuatrial (S-A) nodal branch of right coronary artery

[TA]
ascending atrial branch, usually (55%) arising from the anterior stem of the right coronary artery (but 35-45% arising from the circumflex branch of the left coronary artery), which runs around the base of the superior vena cava to reach the sinuatrial node.
References in periodicals archive ?
Fistula from proximal CX was originating from small side branch and fistula from proximal RCA was originating after sinus node artery and terminating in the lung parenchyma as two tracts (Fig.
Anatomical investigation of the sinus node artery using dual-source computed tomography.
Berna G, Montorsi R Anomalous origin of the sinus node artery from the left main trunk: a potential cause of iatrogenic hypokinetic arrhythmia.
Coronary angiography (30[degrees] right anterior oblique, 35[degrees] caudal and 60[degrees] left anterior oblique projections of the left coronary system) demonstrated a rare anatomical variation, in which the sinus node artery had a long course originating from the distal part of the left circumflex artery below or behind the left auricle (Fig.
We describe herein a rare and unusual variation, found in a patient with severe mitral stenosis and left atrial dilatation, in which a posterior sinus node artery originate from the posterior segment of the circumflex artery, coursed postero-superiorly and entered the sinus node from superiorly.