Prognosis of Type A Acute Aortic Syndrome in Elderly Patients

Abstract Funding Acknowledgements None. Introduction Type A acute aortic syndrome (AAS-A) is associated with a high mortality. Emergent surgery is the treatment of choice for patients with AAS-A. However, this surgery is a highly complex procedure associated with a significant morbidity. There are uncertainties about the best treatment strategy for elderly patients, which pose a challenge in clinical practice. Purpose The aim of this study is to evaluate the prognosis of elderly patients with AAS-A and to analyse the impact and outcome of surgery in this patient population. Methods Patients with AAS-A were prospectively and consecutively collected from April-2019 to March-2023 in a four-hospital network with a tertiary care referral centre for cardiac surgery. Patients were classified according to age into two groups: ≥75 years and under 75 years. Clinical, diagnostic, treatment and prognostic variables were analysed. Results A total of 113 patients with AAS were included, of whom 82 were AAS-A patients. Of these, 27 were aged 75 years or older. Older patients had more comorbidities: COPD, atrial fibrillation, renal failure and stroke (table). Elderly patients were diagnosed later (symptom-to-diagnosis time: 10 hours (6.2-62) vs. 4 hours (2.2-23), p=0.004). At diagnosis, older patients had more complications: cardiac tamponade (33% vs 23%, p= 0.352), hemopericardium (69% vs 38%, p= 0.01), shock (45% vs 30%, p=0.180) and renal failure (40% vs 20%, p= 0.132). The surgical risk of older patients was higher (table) and they underwent surgery in a lower proportion (59.3% vs. 87.3%, p= 0.004). Once diagnosed, time to surgery was similar between groups (3.2h (1.6-10) vs. 2.7h (2.1-5.7), p= 0.728). Despite the increased risk, surgery was associated with a mortality reduction in both patient groups (figure). In patients who underwent surgery, the incidence of post-surgical atrial fibrillation was higher in the group of older patients, with no significant differences in the remaining complications (table). Conclusion Elderly patients with AAS-A have more comorbidities, are diagnosed later and have a higher mortality than those with younger age. Despite this, surgery is associated with a mortality reduction even in the older population. Age alone should not be a contraindication for surgical treatment of AAS-A.Mortality in SAA by age and treatment