Key result
Early admission for type A aortic dissection is linked to ~73% higher in-hospital mortality.
Why the study?
The study aimed to evaluate how the time interval between symptom onset and hospital admission is associated with postoperative outcomes following type A acute aortic dissection repair.
Does early hospital admission (≤12 hours) compared to later admission (>12 hours to <72 hours) improve postoperative outcomes in patients undergoing surgical repair of type A acute aortic dissection?
Cohort (n=1,228)
No
Does early hospital admission (≤12 hours) compared to later admission (>12 hours to <72 hours) improve postoperative outcomes in patients undergoing surgical repair of type A acute aortic dissection?
Paradoxically, early surgical intervention for type A acute aortic dissection is associated with higher mortality than delayed surgery, underscoring a strong survivorship bias where stable patients survive to a later presentation while early presenters carry a far higher burden of acute life-threatening malperfusion.
Early presenters face higher mortality due to greater severity; leaves open whether admission timing itself affects outcomes independent of clinical status.
Objective: This study aimed to assess how the time interval between onset of symptoms and hospital admission associates with postoperative outcomes after type A acute aortic dissection (TAAD) repair. Methods: From January 2011 to January 2020, 1406 consecutive patients underwent TAAD repair at our center. We included 1228 patients who were admitted within 72 hours of symptom onset and divided them into 2 groups: 867 patients in the early (≤12 hours) and 361 in the late (>12 hours and <72 hours) admission group. Conclusions: Our analysis indicates that the timing of surgery in patients with TAAD is primarily driven by the presence of more severe symptoms and signs of ischemia and, despite early treatment, these patients have increased rates of complications and mortality. This emphasizes the importance of the clinical status on admission, rather than the time, as the main driver for postoperative complications.
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Guo et al. (2026) conducted a cohort in Type A acute aortic dissection (n=1,228). Early admission (≤12 hours from symptom onset) vs. Late admission (>12 and <72 hours from symptom onset) was evaluated on In-hospital mortality (OR 1.73, 95% CI 1.12-2.76, p=0.02). Early admission (≤12 hours from symptom onset) for type A acute aortic dissection was associated with a higher risk of in-hospital mortality compared to late admission (15% vs. 9.4%; OR 1.73), likely reflecting a more severe preoperative clinical status.
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