Left Atrial Dissection During Minimally Invasive Mitral Valve Surgery

• LA dissection is a rare complication of cardiac surgery seen more often in MV repair. • It can present heterogeneously, from being benign to causing hemodynamic collapse. • Perioperative TEE is valuable in identifying LA dissection and aiding in management. • TEE can show the cause of instability, such as MV inflow or PV outflow obstruction.