Heart Bypass, LeftCardiopulmonary BypassExtracorporeal CirculationHeart AtriaParaplegiaHeart Bypass, RightHeartCardiopulmonary ResuscitationHeart Arrest, InducedCardiac Surgical ProceduresGastric BypassHeart RatePulmonary VeinsCirculatory Arrest, Deep Hypothermia InducedHypothermia, InducedTreatment OutcomePostoperative ComplicationsVentricular Function, LeftCoronary Artery Bypass, Off-PumpAtrial FibrillationHeart Defects, CongenitalTime FactorsHeart ArrestCoronary Artery BypassAtrial Function, LeftAtrial FunctionHeart DiseasesHemodynamicsPostoperative PeriodHeart NeoplasmsOxygenatorsVentricular Dysfunction, LeftHeart FailureProspective StudiesDogsEchocardiographyMyocardial Contraction