Outcomes of preoperative antiplatelet therapy in patients with acute type A aortic dissection

Xuan Jiang1, Fareed Khan1, Enyi Shi1

  • 1Department of Cardiac Surgery, First Affiliated Hospital, China Medical University, Shenyang, China.

Insights

Antiplatelet therapy before acute type A aortic dissection repair is linked to increased transfusions and higher mortality. Careful surgical timing is crucial for patient outcomes.

Area of Science:

  • Cardiovascular Surgery
  • Vascular Surgery
  • Thoracic Surgery

Background:

  • Acute type A aortic dissection (ATAAD) is a life-threatening condition requiring immediate surgical intervention.
  • Patients may be misdiagnosed with acute coronary syndrome, leading to antiplatelet therapy (APT) before ATAAD diagnosis.
  • The impact of preoperative APT on clinical outcomes in ATAAD patients is not well-established.

Purpose of the Study:

  • To investigate the association between preoperative antiplatelet therapy (APT) and clinical outcomes in patients undergoing surgery for acute type A aortic dissection (ATAAD).
  • To compare complication rates and mortality between ATAAD patients who received APT and those who did not.

Main Methods:

  • Retrospective analysis of the Chinese Acute Aortic Syndrome (AAS) Collaboration Database.
  • Propensity score matching (PSM) was used to balance baseline characteristics between APT and non-APT groups.
  • Logistic regression analysis was employed to compare outcomes, including complications and mortality.

Main Results:

  • After PSM, 30 patients were in the APT group and 80 in the non-APT group.
  • The APT group showed significantly higher rates of blood product transfusions (packed red blood cells, plasma, platelets) and greater chest drainage volume.
  • Mortality was significantly higher in the APT group (26% vs. 10%, p=0.027), with preoperative APT being an independent predictor of mortality (OR: 6.808, p=0.011).

Conclusions:

  • Preoperative antiplatelet therapy in ATAAD patients is associated with increased transfusion requirements and higher early mortality.
  • These findings underscore the importance of carefully considering the timing of surgery in relation to APT use.
  • Surgeon experience and patient-specific factors should guide surgical decision-making in ATAAD patients on APT.
Abstract

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