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Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
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Vigilant monitoring for aneurysm rupture is essential for patients undergoing aortic surgery.Preoperative Nursing ManagementContinuously monitor the patient for manifestations of aneurysm rupture, such as pallor, weakness, tachycardia, hypotension, abdominal, back, groin, or periumbilical pain, changes in consciousness, and a pulsating abdominal mass. Regularly assess the patient's peripheral pulses.Instruct the patient to consume a clear liquid diet the day before surgery and administer...
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[Total Aortic Arch Replacement after a Prior Ascending Aortic Replacement].

Koki Ito1, Yoshikatsu Saiki

  • 1Division of Cardiovascular Surgery, Tohoku University, Sendai, Japan.

Kyobu Geka. the Japanese Journal of Thoracic Surgery
|September 22, 2021
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Summary

Reoperations for aortic arch disease after prior ascending aorta replacement require careful planning to avoid complications. Strategies include selective cerebral perfusion and hypothermia to ensure patient safety during complex cardiac surgeries.

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Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Vascular Surgery

Background:

  • Surgical treatment for non-dissected aortic arch diseases is increasing.
  • Reoperation after ascending aortic replacement presents unique challenges.
  • Awareness of potential pitfalls is crucial for successful outcomes.

Purpose of the Study:

  • To highlight critical considerations for redo total aortic arch replacement following previous ascending aortic replacement.
  • To outline strategies for managing high-risk re-sternotomy and associated complications.
  • To emphasize the importance of patient safety during complex aortic arch surgeries.

Main Methods:

  • Review of indications for redo aortic arch replacement, including pseudoaneurysm and aneurysm formation.
  • Assessment of radiologic features predicting high-risk re-sternotomy.
  • Discussion of strategic cannulation sites and the use of partial cardiopulmonary bypass with selective cerebral perfusion.
  • Emphasis on managing adhesions and employing liberal hypothermia.

Main Results:

  • Pseudoaneurysm at distal anastomosis and new aortic arch aneurysms are key indications for reoperation.
  • Radiologic findings like close sternal approximation (<5 mm) or retrosternal pseudoaneurysm indicate high-sternotomy risk.
  • Bilateral carotid artery cannulation for selective cerebral perfusion before sternotomy mitigates neurological risks.
  • Careful dissection is needed to avoid injury to vital structures due to adhesions.
  • Liberal hypothermia aids in organ preservation but may prolong procedure time.

Conclusions:

  • Redo total aortic arch replacement necessitates meticulous surgical planning and execution.
  • Proactive measures, including pre-sternotomy bypass and perfusion, are vital for high-risk cases.
  • Effective management of adhesions and judicious use of hypothermia are key to optimizing outcomes in complex aortic surgeries.