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OBJECTIVES To investigate sex-based differences in presenting characteristics and early outcomes of type A intramural haematoma. METHODS Patients with type A intramural haematoma in an institutional cohort were consecutively enrolled between December 2013 and July 2022. Presenting characteristics, morphological progression and all-cause death during hospitalization were evaluated according to patient sex. RESULTS Among 473 patients, 48.0% were female. Females were older (65.9 ± 9.1 vs 58.5 ± 11.5 years, P < 0.001) with larger ascending aortic diameters (52.2 ± 6.6 vs 48.3 ± 6.1 mm, P < 0.001), thicker haematomas (11.5 ± 4.9 vs 9.5 ± 3.4 mm, P < 0.001) and more frequent focal intimal disruptions (45.4% vs 29.7%, P < 0.001). Within 30 days of initial medical therapy, 89.8% of males vs 70.1% of females showed morphological regression or stable condition on repeat computed tomography angiography. The in-hospital mortality was 9.7% in females (n  = 22) and 2.8% in males (n  = 7). Kaplan–Meier analysis revealed higher early mortality in females (P = 0.002). Multivariable Cox regression showed female sex as an independent risk factor for early death (hazard ratio: 2.8, 95% confidence interval: 1.2–6.8, P = 0.021). Subgroup analysis revealed no heterogeneity according to subgroups including older age (71–90 years), ascending aortic diameter ≥50 mm, presence of focal intimal disruption, presence of pericardial effusion, haematoma thickness ≥11 mm and hypertension. CONCLUSIONS Female patients with type A intramural haematoma presented with worse characteristics, higher early morphological progression and an increased risk of early death compared to males. [ABSTRACT FROM AUTHOR]

OBJECTIVES Ascending aortic length has recently been recognized as a novel predictor of adverse events in aortic diseases, but its prognostic value in type A intramural haematoma is unknown. We aimed to evaluate the association between ascending aortic length and outcomes in patients with type A intramural haematoma initially managed medically. METHODS We retrospectively analysed patients with acute type A intramural haematoma. Ascending aortic length was measured by computed tomography. The primary outcome was aortic progression, defined as aortic intervention or aortic-related death. RESULTS A total of 98 patients were enrolled. During a median follow-up of 2.6 years, aortic progression occurred in 27 patients (27.6%), i.e. 9 events per 100 patient-years. Patients with ascending aortic length ≥11 cm had significantly higher rates of aortic progression [54.2% (20.9 events per 100 patient-years) vs 18.9% (6.1 events per 100 patient-years), P  = 0.001], surgical intervention (45.8% vs 12.2%, P  = 0.001) and presence of ulcer-like projection (25.0% vs 2.7%, P  = 0.002) compared to those with ascending aortic length <11 cm. Kaplan–Meier analysis demonstrated lower progression-free survival in the ascending aortic length ≥11 cm group (P  = 0.0021). Ascending aortic length had a sensitivity of 61.9% and specificity of 77.8% for predicting aortic progression, with an area under the curve of 0.756 (95% confidence interval 0.649–0.862). CONCLUSIONS Ascending aortic elongation may identify a high-risk subgroup of acute type A intramural haematoma patients initially managed medically who could potentially benefit from early surgery. Ascending aortic length should be considered in the risk stratification and management of these patients. [ABSTRACT FROM AUTHOR]

Acute Aortic Syndrome (AAS) comprises of three distinct pathological conditions: Aortic Dissection (AD), Penetrating Atherosclerotic Ulcer (PAU), and Intramural Haematoma (IMH). Although AAS and its emergencies are not common occurrences, they are considered highly dangerous and potentially fatal. Clinically, differentiating between the various types of aortic syndromes can be challenging. The prognosis of these conditions significantly depends on speedy and precise analysis. Therefore, present study emphasised the critical role of radiology in the diagnosis of AASs, with Contrast-Enhanced Computed Tomography (CECT) being the quickest and most consistent imaging modality. In this case series, four cases of AASs are presented, comprising three cases of AD and a case of PAU in a patient with infrarenal aortic occlusion. Notably, one of the dissection cases was accompanied by renal ischaemia. Recognising acute aortic emergencies promptly is essential for saving lives.

The document titled "2024 ESC Guidelines for the management of peripheral arterial and aortic diseases" is a comprehensive guide that provides recommendations for the evaluation, screening, and treatment of peripheral arterial and aortic diseases. It covers topics such as epidemiology, risk factors, and diagnostic methods for these conditions. The guidelines outline optimal medical treatments, including lifestyle changes and pharmacological therapies, and discuss specific conditions such as peripheral arterial disease and carotid artery disease. The document also addresses aortic diseases, including atheromatous disease and aortic aneurysms, and offers guidance on treatment options such as surgery and endovascular repair. It provides information on genetic and congenital diseases of the aorta, as well as polyvascular peripheral arterial disease. The document concludes with key messages, gaps in evidence, and recommendations for practice, emphasizing the importance of individualized care, multidisciplinary management, and early diagnosis. [Extracted from the article]

Acute Aortic Syndrome (AAS) comprises of three distinct pathological conditions: Aortic Dissection (AD), Penetrating Atherosclerotic Ulcer (PAU), and Intramural Haematoma (IMH). Although AAS and its emergencies are not common occurrences, they are considered highly dangerous and potentially fatal. Clinically, differentiating between the various types of aortic syndromes can be challenging. The prognosis of these conditions significantly depends on speedy and precise analysis. Therefore, present study emphasised the critical role of radiology in the diagnosis of AASs, with Contrast-Enhanced Computed Tomography (CECT) being the quickest and most consistent imaging modality. In this case series, four cases of AASs are presented, comprising three cases of AD and a case of PAU in a patient with infrarenal aortic occlusion. Notably, one of the dissection cases was accompanied by renal ischaemia. Recognising acute aortic emergencies promptly is essential for saving lives. [ABSTRACT FROM AUTHOR]

Aims Abdominal aortic aneurysm (AAA) represents a life-threatening condition characterized by medial layer degeneration of the abdominal aorta. Nevertheless, knowledge regarding changes in regulators associated with aortic status remains incomplete. A thorough understanding of cell types and signalling pathways involved in the development and progression of AAAs is essential for the development of medical therapy. Methods and results We harvested specimens of the abdominal aorta with different pathological features in Angiotensin II (AngII)-infused ApoE−/− mice, conducted scRNA-seq, and identified a unique population of interferon-inducible monocytes/macrophages (IFNICs), which were amply found in the AAAs. Gene set variation analysis revealed that activation of the cytosolic DNA sensing cGAS-STING and JAK-STAT pathways promoted the secretion of type I interferons in monocytes/macrophages and differentiated them into IFNICs. We generated myeloid cell-specific deletion of Sting1 (Lyz2 -Cre+/−; Sting1 flox/flox) mice and performed bone marrow transplantation and found that myeloid cell-specific deletion of Sting1 or Ifnar1 significantly reduced the incidence of AAA, aortic rupture rate, and diameter of the abdominal aorta. Mechanistically, the activated pyroptosis- and inflammation-related signalling pathways, regulated by IRF7 in IFNICs, play critical roles in the developing AAAs. Conclusion IFNICs are a unique monocyte/macrophage subset implicated in the development of AAAs and aortic rupture. [ABSTRACT FROM AUTHOR]

Aortic dissection is infrequent in everyday practice; however, it can result in life-threatening complications and causes more deaths each year in the UK than road traffic collisions. It is one of the family of acute aortic syndromes, which includes penetrating aortic ulcer (PAU) and intramural haematoma (IMH). Type A aortic dissections involve the ascending aorta and arch and almost invariably require prompt surgical treatment due to exceptionally high early 48-hour mortality without surgery. Many type B aortic dissections (TBAD) are not complicated at presentation and can be treated conservatively in high dependency and discharged without intervention. Complicated aortic dissection requires intervention, often with a thoracic endovascular aortic repair (TEVAR). The survival after TBAD is higher than type A dissection that invariably requires emergency operative intervention, with 65% of patients surviving to 1 year. Following acute aortic syndrome, best medical therapy involves tight blood pressure and heart rate control using beta-blockers or calcium channel blockers. Statin therapy may be of benefit. Regular cross-sectional imaging surveillance is important to detect late complications such as aortic dilatation. In type B aortic dissection, aortic dilatation is a common cause of late rupture with only 50% of patients surviving after 5 years without intervention. One of the most important questions at present is whether people at high risk of further aortic dilatation can be identified and intervened on early to prevent these late complications? [ABSTRACT FROM AUTHOR]