A 48-year-old male with a history of secundum type atrial septal defect (ASD) closure in childhood presented to our outpatient clinic complaining of palpitation for six months. Interestingly, transthoracic and transesophageal echocardiography exams showed an undiagnosed partially unroofed coronary sinus associated with persistent left superior vena cava (LSVC) and Cor triatriatum.

A 16-year-old male patient was referred to our institution due to occasional chest tightness for one month. Electrocardiogram showed some atrioventricular junctional beats. Transthoracic echocardiography revealed a hyperechoic mass about 1.4 × 0.5 cm in size in the right atrium. He was then scheduled for operation under the impression of possible right atrial myxoma. After general anesthesia, a...

Conduction time from the region of the sinus node to the region of the atrioventricular (A-V) node was studied during open heart surgery in 13 patients with an endocardial cushion type atrial septal defect, eight patients with a secundum type atrial septal defect, one patient with a sinus venosus type atrial septal defect, and eight patients with an intact atrial septum. Internodal conduction t...

Sinus venosus defects include two varieties, superior and inferior sinus defects. The defect is characterized by abnormal communication between closely related venoatrial structures: 1) the normally positioned vena cava-right atrium complex 2) right pulmonary vein-left that displaced leftward, forward upward. Inferior primarily involve atrial junction while can also be affected. Because of rari...

Abstract The study has aimed to investigate and determine the anatomical position, shape, size, histological features of ductus venosus, its role as a shunt in fetal circulatory system domestic ruminants. research was conducted on 19 bovine, 11 sheep 5 goat fetuses, aborted at late stage pregnancy or deceased just after delivery. general anatomy venosus investigated by in-situ dissection corros...

A trial septal defects (ASDs) are one of the most common congenital heart defects, with a prevalence estimated to affect 100 of 100,000 live births.1 ASDs are classified according to location, the most frequent being secundum ASD (75%–80%), primum ASD (15%–20%), sinus venosus (5%–10%), and the less common defect, coronary sinus (< 1%). These defects frequently result in left-to-right shunting. ...

Ventricular pre-excitation occurred in two cases in which the accessory pathways between the atria and the ventricles were histologically identified as being associated with aneurysmal malformations of the coronary sinus. In one case the connexions were in the posterior wall of the coronary sinus aneurysm and were not related to the atrioventricular annulus; in the other, a connexion was situat...