Is my patient a bleeder? A diagnostic framework for mild bleeding disorders

Area of Science:

• Hematology
• Clinical Diagnostics

Background:

• Congenital mild bleeding disorders (MBDs) are common and pose significant diagnostic challenges.
• These disorders often involve primary hemostasis (e.g., type 1 VWD, platelet function disorders) but can also include clotting factor deficiencies and hyperfibrinolysis.
• Patients present with mucocutaneous bleeding, menorrhagia, and excessive hemorrhage post-trauma or surgery.

Purpose of the Study:

• To review the diagnostic challenges faced by clinicians and laboratories in identifying MBDs.
• To highlight the limitations of current diagnostic approaches, including screening tests and specific assays.
• To emphasize the need for improved diagnostic tools and understanding of MBD pathogenesis.

Main Methods:

• Review of current diagnostic problems in mild bleeding disorders.
• Discussion of limitations in distinguishing pathological from normal bleeding.
• Analysis of challenges in diagnosing type 1 VWD and platelet function disorders.
• Evaluation of advancements in platelet aggregation and secretion assays.

Main Results:

• Many MBD patients remain undiagnosed despite extensive laboratory testing.
• Current diagnostic strategies struggle with differentiating between various MBDs due to non-specific bleeding patterns.
• There are inherent difficulties in diagnosing type 1 VWD and common platelet functional disorders.

Conclusions:

• Significant research is required to understand the pathogenesis of bleeding in MBD patients.
• Standardization of laboratory assays, improved evaluation of fibrinolysis, and better understanding of platelet-vessel wall interactions are essential.
• Development of new diagnostic tools is needed to improve the diagnostic yield for MBDs.