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[Type B aortic dissections: surgical technique and results]

M Genoni1, L K von Segesser, T Carrel

  • 1Klinik für Herz- und Gefässchirurgie, Universitätsspital Zürich.

Helvetica Chirurgica Acta
|December 1, 1994
PubMed
Summary

Surgical intervention for type B aortic dissection shows varying outcomes based on acuity. Chronic dissections have lower mortality and morbidity, highlighting the importance of managing risk factors like hypertension.

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Area of Science:

  • Cardiovascular Surgery
  • Vascular Surgery
  • Thoracic Surgery

Context:

  • Type B aortic dissection involves a tear in the descending aorta.
  • Patient cohorts are categorized by dissection onset: acute (<24h), subacute (<14 days), and chronic (>14 days).
  • Surgical indications varied by dissection type, including hematothorax, organ ischemia, and aortic diameter.

Purpose:

  • To evaluate surgical outcomes for type B aortic dissection based on disease acuity.
  • To compare mortality and morbidity rates across acute, subacute, and chronic type B aortic dissections.
  • To identify key indications for surgical intervention in different phases of type B aortic dissection.

Summary:

  • A study of 70 patients with type B aortic dissection revealed overall mortality of 17%.

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  • Outcomes differed significantly by acuity: acute (27% mortality, 73% morbidity), subacute (26% mortality, 43% morbidity), and chronic (8% mortality, 12% morbidity).
  • Graft replacement was the predominant surgical procedure (86%), with no paraparesis observed in chronic dissection surgeries.

    • Impact:

    • Surgical management of type B aortic dissection yields better outcomes for chronic cases.
    • Effective control of hypertension is crucial for long-term survival in chronic type B dissections.
    • Understanding acuity-specific risks informs treatment strategies and improves patient prognosis in aortic dissection.