Acute type A aortic dissection--diagnostic aspects and surgical experience

Area of Science:

• Cardiovascular Surgery
• Diagnostic Imaging
• Thoracic Surgery

Background:

• Acute type A aortic dissection is a life-threatening condition requiring prompt surgical intervention.
• Accurate and rapid diagnosis is crucial for effective management.
• Minimizing perioperative and long-term complications, particularly aortic root issues, is a key treatment goal.

Purpose of the Study:

• To evaluate the efficacy and safety of surgical treatment for acute type A aortic dissection.
• To assess the diagnostic accuracy of transesophageal echocardiography (TEE) in this patient population.
• To determine the long-term outcomes of composite graft replacement with the button technique.

Main Methods:

• Surgical treatment of 33 critically ill patients with acute type A aortic dissection.
• Use of transthoracic echocardiography (TTE) for emergency diagnosis of pericardiac tamponade.
• Utilization of transesophageal echocardiography (TEE) for definitive diagnosis.
• Application of composite graft replacement with the button technique in 24 patients.

Main Results:

• Perioperative mortality was 12% (4/33) and late mortality was 7% (2/29).
• The actuarial 5-year survival rate was 73%.
• No aortic root reoperations were needed during a mean follow-up of 4 years.
• TEE demonstrated excellent reliability with no false positive diagnoses.

Conclusions:

• Transesophageal echocardiography is an accurate tool for rapid diagnosis of acute type A aortic dissection.
• Open composite graft replacement with the button technique is a highly satisfactory treatment.
• This surgical approach effectively avoids late aortic root problems.