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Updated: Oct 16, 2025

Novel and Innovative Hybrid Technique for Type A Aortic Dissection
Published on: March 28, 2025
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.
Background:
Acute type A aortic dissection (ATAAD) is life-threatening and requires immediate surgery. Sudden chest pain may lead to a risk of misdiagnosis as an acute coronary syndrome and may lead to subsequent antiplatelet therapy (APT). We used the Chinese Acute Aortic Syndrome (AAS) Collaboration Database to study the effects of APT on clinical outcomes.
Methods:
The AAS database is a retrospective multicentre database where 31 of 3092 patients had APT with aspirin or clopidogrel or both before surgery. Before and after propensity score matching (PSM), the incidence of complications and mortality was compared between APT and non-APT patients by using a logistic regression model. The sample remaining after PSM was 30 in the APT group and 80 in the non-APT group.
Results:
The sample remaining after matching was 30 in the APT group and 80 in the non-APT group. We found 10 cases with percutaneous coronary intervention in the APT group (33.3%). The APT group received more volume of packed red blood cells, 8.4 ± 6.05 units; plasma, 401.67 ± 727 ml, and platelet transfusion (14.07 ± 8.92 units). The drainage volume was much more in the APT group (5009.37 ± 2131.44 ml, p = .004). Mortality was higher in APT group (26% vs. 10%, p = .027). The preoperative APT was an independent predictor of mortality (odds ratio: 6.808, 95% confidence interval: 1.554-29.828, p = .011).
Conclusion:
APT before ATAAD repair was associated with more transfusions and higher early mortality. The timing of surgery should be carefully considered based on the patient's status and the surgeon's experience.
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