Interatrial Septal Dissection Complicating a MitraClip Procedure.

Area of Science:

• Cardiology
• Cardiac Surgery
• Interventional Cardiology

Background:

• Left atrial dissection is a rare complication following cardiac surgery, with reported incidence rates between 0.16% and 0.84%.
• The MitraClip procedure is an established treatment for mitral regurgitation, but potential complications require ongoing investigation.
• Interatrial dissection and hematoma are exceedingly uncommon post-cardiac procedures.

Observation:

• This report details the first documented case of interatrial dissection and hematoma occurring in association with the MitraClip procedure.
• The patient presented hemodynamically stable and remained asymptomatic following the intervention.
• Close monitoring with echocardiographic imaging was employed to assess the dissection's progression.

Findings:

• The interatrial septal dissection, identified post-MitraClip, demonstrated complete resolution at the 1-month follow-up.
• Echocardiography confirmed the absence of dissection and hematoma, indicating successful conservative management.
• The patient's stable hemodynamics and asymptomatic status supported the non-interventional approach.

Implications:

• Conservative management, including serial echocardiography, appears effective for hemodynamically stable patients with interatrial dissection post-MitraClip.
• This case expands the understanding of rare complications associated with transcatheter mitral valve repair.
• Further research may elucidate the specific mechanisms and optimal surveillance strategies for interatrial dissection following cardiac interventions.