饮食维生素k引导策略后改善口服抗凝剂:一个随机对照试验
Michelli C de Assis1, Eneida R Rabelo, Christiane W Avila
1Cardiovascular Division of Hospital de Clínicas de Porto Alegre, Postgraduation Program in Cardiology and Cardiovascular Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Circulation
|September 10, 2009
概括
在服用华法林的患者中,以维生素K为导向的饮食策略改善了抗凝稳定性. 这种专注于持续摄入维生素K的方法帮助更多患者安全地达到目标国际正常化比率 (INR) 水平.
科学领域:
- 药理学和治疗学 药理学和治疗学
- 心血管医学 心血管医学
- 营养科学 营养科学
背景情况:
- 饮食中的维生素K摄入量被认为是影响口服抗凝治疗稳定的重要因素.
- 评估管理抗凝固稳定性维生素K相互作用的临床适用性的前性研究是有限的.
研究的目的:
- 为了比较传统的抗凝管理策略与饮食维生素K导向策略的有效性和安全性.
- 评估每周修改富含维生素K的食物摄入量对实现和维持治疗性国际规范化比率 (INR) 目标的影响.
主要方法:
- 一项随机对照试验,涉及132名门诊患者,INR水平超出他们的治疗范围.
- 两只手臂:传统管理 (抗凝剂处方调整) 与饮食维生素K引导管理 (改变食物摄入量).
- 主要终点:在90天内达到预规定的INR目标的患者百分比.
主要成果:
- 以维生素K为指导的策略导致更高比例的患者在90天内达到目标INR (74%对58%,P=0.04).
- 这两种策略在短期 (15天) 中都显示出相似的INR变化.
- 饮食干预组略有减少了轻微出血或需要食用维生素K的情况 (1.5%对11%,P=0.06).
结论:
- 以饮食维生素K摄入为指导的管理策略是可行的,并且对于长期的口服抗凝药是安全的.
- 这种方法可能会增加患者实现和维持目标INR水平的可能性.
- 饮食管理提供了一个潜在的辅助药理调整,以优化抗凝.
相关概念视频
01:30Anticoagulant Drugs: Low-Molecular-Weight Heparins
2.6K
Hemostasis is a crucial process that prevents excessive blood loss from damaged blood vessels. It involves various mechanisms such as vasoconstriction, platelet adhesion and activation, and fibrin formation. The importance of each mechanism depends on the type of vessel injury. In contrast, thrombosis is the abnormal formation of a blood clot within the blood vessels, leading to potential complications if the clot obstructs blood flow. Thrombosis can be caused by increased coagulability of the...
2.6K
01:18Anticoagulant Drugs: Vitamin K Antagonists and Direct Oral Anticoagulants
2.8K
Oral anticoagulants are vital tools in preventing and treating blood clotting disorders. This diverse class of medications can be categorized as vitamin K antagonists, exemplified by warfarin, and direct thrombin inhibitors (DTIs), such as dabigatran, as well as factor Xa inhibitors, including rivaroxaban.
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
Warfarin, a prominent vitamin K antagonist family member, exerts its effect by inhibiting the enzyme VKORC1 (vitamin K epoxide reductase complex 1). By hindering this enzyme, warfarin...
2.8K
01:26Atherosclerosis III: Management
747
Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
747
01:20Venous Thrombosis II: Clinical Manifestations and Diagnostic Studies
470
The key difference between Superficial Vein Thrombosis (SVT) and Deep Vein Thrombosis (DVT) lies in their location and severity.Clinical ManifestationsSVT typically presents with localized pain, tenderness, and redness along the course of a superficial vein, often accompanied by a palpable, cord-like structure under the skin. This condition is usually less dangerous than DVT but can be uncomfortable and may lead to complications such as cellulitis or, rarely, a clot extension into the deep...
470
01:29Venous Thrombosis III: Interprofessional Care
482
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...
482
01:30Venous Thrombosis IV: Nursing Management
418
Nursing management begins with a thorough assessment of the patient's health history. Key factors include trauma to veins, peripherally inserted central catheters, varicose veins, recent pregnancy or childbirth, surgery, bacteremia, prolonged bed rest, atrial fibrillation, COPD, heart failure, cancer, coagulation disorders, myocardial infarction, spinal cord injury, stroke, prolonged travel, recent bone fractures, and dehydration. Review medication intake, particularly oral contraceptives,...
418