Chronic Mesenteric Ischemia after a Type A Aortic Dissection Repair.

Area of Science:

• Cardiovascular Surgery
• Vascular Surgery
• Aortic Diseases

Background:

• Acute Type A aortic dissection is a life-threatening condition requiring urgent surgical repair.
• Surgical repair of aortic dissection, particularly hemiarch repair with bypass, carries inherent risks.
• Limb ischemia is a known complication of aortic dissection and its surgical management.

Purpose of the Study:

• To report a rare complication following open hemiarch repair for acute Type A aortic dissection.
• To highlight the challenges posed by a persistent dissection flap.
• To emphasize the importance of monitoring for late hemodynamic complications.

Main Methods:

• Case report of a 57-year-old male patient.
• Description of open hemiarch repair with femoral-femoral crossover bypass and fasciotomies.
• Follow-up detailing clinical presentation and diagnosis of flap-related complications.

Main Results:

• The patient experienced significant weight loss and intermittent hemodynamic collapse 5 weeks post-surgery.
• The collapse was attributed to the dissection flap intermittently obstructing the superior mesenteric artery origin.
• This illustrates a delayed complication stemming from the dissection flap after initial repair.

Conclusions:

• Dissection flaps can cause late hemodynamic instability even after successful initial repair of Type A aortic dissection.
• Close monitoring for secondary complications related to residual dissection flaps is crucial.
• This case underscores the complex and sometimes unpredictable nature of aortic dissection management.