Intraoperative Global Longitudinal Strain and Global Longitudinal Strain Rate as Predictors of Unfavorable Outcome in On-Pump Mitral Surgery

Inclusion Criteria: * All patients undergoing elective or urgent open mitral valve repair or mitral valve replacement over 18 years * Ability to sign informed consent * Availability of pre-CBP and after-CPB intraoperative transesophageal echocardiography which include a 4-chambers, 2-chambers and a long axis view at a minimum frame rate of 50 Hz * Good quality echocardiographic images with a optimal endocardial definition * Good quality ECG tracing Exclusion Criteria: * All patients undergoing emergent open mitral valve repair or mitral valve replacement * Unavailability of pre-CBP and after-CPB intraoperative transesophageal echocardiography which include a 4-chambers, 2-chambers and a long axis view at a minimum frame rate of 50 Hz * Poor quality echocardiographic images * ECG artefacts