Hemoglobin concentration and body mass index are determinants of plasma von Willebrand factor and factor VIII levels

被引:0
作者
Carter-Febres, Maria [1 ,3 ]
Fenchel, Matthew [2 ]
Pomales, Jennifer [1 ]
Tarango, Cristina [1 ,3 ]
Mullins, Eric S. [1 ,3 ]
机构
[1] Cincinnati Childrens Hosp Med Ctr, Div Hematol, Cincinnati, OH 45229 USA
[2] Cincinnati Childrens Hosp Med Ctr, Biostat & Epidemiol, Cincinnati, OH 45229 USA
[3] Univ Cincinnati, Coll Med, Cincinnati, OH USA
关键词
Von willebrand factor; Anemia; Heavy menstrual bleeding; WFH; 2021; GUIDELINES; VONWILLEBRAND-FACTOR; BLOOD-COAGULATION; DIAGNOSIS; CELLS; VWF; HYPERVISCOSITY; MANAGEMENT; DISEASE; FVIII;
D O I
10.1016/j.thromres.2024.109061
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background: Von Willebrand Disease (VWD) is the most common inherited bleeding disorder. VWD is characterized by an abnormal quantity or quality of von Willebrand Factor (VWF). Anemia is often found at presentation for a bleeding disorder evaluation due to chronic blood loss. Objectives/Hypothesis: We hypothesized that anemia is associated with elevations in both VWF and factor VIII (FVIII) over baseline. We also hypothesized that obesity would be associated with increased levels of VWF. Methods: We conducted a single-center review of the electronic health record for patients that had proximal von Willebrand profiles and Hb data. Results: We identified 4552 unique subjects with VWF studies and a CBC within 24 h. We found that decreasing hemoglobin inversely correlated with VWF antigen, VWF ristocetin cofactor activity, and FVIII activity. We also found that obesity and Black race were independently associated with increased VWF antigen, activity, and FVIII activity. Hb, race, and body mass index (BMI) continued to be determinants of VWF and FVIII levels in multivariable analysis. Conclusion: Our study demonstrates that anemia, race, and BMI were found to be associated with elevation of VWF antigen, VWF activity, and FVIII levels. As many individuals with anemia present for evaluation for a bleeding disorder, these variables need to be considered. Key points: - Anemia was found to be associated with elevation of VWF antigen, VWF activity and FVIII levels. - Testing von Willebrand factor at times of anemia may mask a diagnosis of von Willebrand Disease.
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页数:8
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