使用On-X机械大动脉假体发生重大出血和血栓栓塞事件:一项SWEDEHEART研究
Ruixin Lu1, Michael Dismorr1, Magnus Dalén1,2
1Department of Molecular Medicine and Surgery, Karolinska Institutet, 171 76 Stockholm, Sweden.
Interdisciplinary cardiovascular and thoracic surgery
|July 29, 2025
概括
带有On-X大动脉和其他机械的患者有类似的出血和血栓栓塞事件的风险. 这项研究比较了接受在较低目标国际正常化比率 (INR) 的On-X门的患者的结果,与使用标准INR的其他门相比.
科学领域:
- 心血管外科心血管外科
- 生物材料科学 生物材料科学
- 临床药理学 临床药理学
背景情况:
- 机械心脏门需要终身抗凝治疗.
- 在X大动脉是独一无二的,批准的目标较低的国际正常化比率 (INR) 1.5-2.0相比,标准的2.0-3.0.0.
- 存在有限的证据来比较On-X门与其他机械大动脉门的临床益处.
研究的目的:
- 为了研究与其他机械性大动脉门相比,在使用On-X大动脉门的患者中,主要出血和血栓栓塞事件的比较风险.
- 为了评估在现实环境中在较低的目标INR下对On-X大动脉的安全性和有效性.
主要方法:
- 一个全国性的,基于人口的队列研究,使用目标试验仿真框架.
- 包括2014年至2022年期间在瑞典接受初级机械大动脉置换的成年患者,来源于SWEDEHEART注册表.
- 从国家登记册中分析重大出血和血栓塞栓事件的发生率,并通过加权来解决混问题.
主要成果:
- 这项研究包括3047名患者:656人 (22%) 使用了上X动脉,2391人 (78%) 使用了其他机械.
- 8年后,重量化累计大出血发生率为On-X的7.2%,其他门的7.0%.
- 血栓塞栓事件的加权累积发病率为7.3%的On-X与6.4%的其他门.
结论:
- 在On-X主动脉和其他机械主动脉之间没有观察到重大出血或血栓栓塞事件的临床显著差异.
- 这些发现表明,在较低的INR目标和在标准INR目标的其他机械上,On-X的安全配置相似.
相关概念视频
Disorders of Hemostasis
1.2K
Hemostasis, the process that stops bleeding after a blood vessel injury, is crucial for maintaining the integrity of the circulatory system. However, disorders of hemostasis can disrupt this delicate balance, leading to either excessive clotting or bleeding. These disorders can be broadly classified into thromboembolic disorders and bleeding disorders.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
Thromboembolic Disorders
Two factors primarily cause thromboembolic conditions.
1.2K
Aneurysm III: Interprofessional Care
26
Aneurysm management involves either conservative medical therapy or surgical intervention, depending on the size and symptoms of the aneurysm. Conservative management is generally reserved for smaller, asymptomatic aneurysms, while larger or symptomatic aneurysms often necessitate surgical repair.Conservative Medical TherapyFor small, asymptomatic aneurysms, particularly abdominal aortic aneurysms (AAA) less than 5.5 centimeters in diameter, conservative medical therapy is recommended. This...
26
Aneurysm II: Clinical Manifestations and Diagnostic Studies
24
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
24
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
55
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
55
Venous Thrombosis III: Interprofessional Care
22
Venous thrombosis requires effective prevention and treatment strategies to improve patient outcomes and reduce potential complications.Prevention StrategiesHealthcare providers must prioritize preventing venous thromboembolism (VTE) for all adult patients upon admission. Interventions depend on bleeding and thrombosis risk, medical history, current medications, diagnoses, planned procedures, and patient preferences. Patients on bed rest should change positions every two hours and, if not...
22
Aortic Regurgitation I: Introduction
38
IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
38


