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原因不明的出血障碍:排除的诊断

Dino Mehic¹, Johanna Gebhart¹, Ingrid Pabinger¹

¹Clinical Division of Haematology and Haemostaseology, Department of Medicine I, Medical University of Vienna, Vienna, Austria.

Hamostaseologie

|February 27, 2024

概括

原因不明的出血障碍 (BDUC) 是在排除其他出血障碍后诊断出来的. 本综述详细介绍了BDUC的诊断方法,强调了未来研究的挑战和领域.

科学领域:

血液学血液学血液学
临床诊断临床诊断临床诊断
遗传学是一个遗传学.

背景情况:

轻度至中度的出血障碍 (MBD) 包括·维勒布兰德病 (VWD),血小板功能缺陷 (PFD) 和凝血因子缺陷 (CFD).
原因不明的出血障碍 (BDUC) 是一种排除诊断,用于其他MBD被排除后,患有不明原因出血倾向的患者.
了解BDUC的诊断挑战和方法对于准确的患者管理至关重要.

研究的目的:

根据维也纳出血生物库 (VIBB) 的当前指南和见解,概述BDUC的诊断策略.
讨论与VWD,PFD和CFD相关的诊断标准和挑战.
探索BDUC.的调查当前的局限性和未来的方向.

主要方法:

基于VWF抗原和/或活性水平≤50 IU/dL的VWD诊断,如果水平<80 IU/dL,则重复测试.
通过光传递聚合计 (LTA),流细胞计和糖蛋白表达分析的重复异常来识别PFD.
评估因子VIII和IX缺陷,使用50%的切割值来检测轻度血友病A或B,并将其他罕见的差价合约 (CFD) 应用已建立的切割值.

主要成果:

由于LTA可重现性和非特异性变化,PFD存在诊断挑战.
对于罕见的差价合约而言,已建立的截止值可能不完全反映它们在出血趋势中的因果作用.
对高纤维素溶解或增加天然抗凝剂的研究受到成本效益和临床表型的限制.

结论:

对BDUC的诊断方法涉及系统地排除其他出血障碍,对VWD,PFD和CFD有特定的标准.
识别诊断挑战,特别是LTA和罕见因子缺陷,对于有效管理至关重要.
需要对BDUC的致病性进行进一步研究,以发现新的机制和潜在的治疗点.

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