Unusual Left Superior Vena Cava, Connected to the Left Atrium via the Left Superior Pulmonary Vein.

Persistent left superior vena cava (LSVC) that drains into the left atrium (LA) via the left superior pulmonary vein (LSPV) is a rare systemic venous drainage anomaly. It can cause cyanosis and unexplained recurrent strokes. Undiagnosed, it can seriously disrupt the conduct of the cardiopulmonary bypass (CPB), causing sudden air lock and/or flooding of the operative field with venous blood.

Applicability of the commonly used risk scores for coronary bypass surgery in Algeria.

Objectives: The applicability of European system for cardiac operative risk evaluation II (EuroSCORE II) and the Society of Thoracic Surgeons Predicted Risk Of Mortality (STS-PROM) as well as the initial logistic Parsonnet risk score, who have been developed from European and American datasets, is questionable outside these regions. We aimed to assess the performance of these three risk scores for patients undergoing isolated coronary artery bypass grafting (CABG) in Algeria.

Methods: Between June 2014 and June 2016, data from 235 consecutive patients, who underwent isolated CABG at a reference center in Algiers, were prospectively collected and scored according to the EuroSCORE II, STS-PROM and the Parsonnet score.