Keywords: 3D echocardiography; Cardiothoracic Surgical Trials Network; MitraClip; atrial fibrillation; cardiopulmonary bypass; cerebral hyperthermia; coronary artery bypass grafting; gaseous emboli; guidelines; hypothermia; jugular venous bulb; maze procedure; mitral regurgitation; mitral valve repair; neurocognitive function; oxygenator; practice variation; pulmonary vein isolation; right ventricle; speckle tracking; strain rate; surgical ablation; systolic anterior motion; temperature; temperature gradient; transcatheter mitral intervention; transesophageal echocardiography.