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Published on: September 9, 2012
Diagnostic utility of bleeding assessment tools in congenital fibrinogen deficiencies
Samin Mohsenian1, Omid Seidizadeh1, Roberta Palla1
1Università degli Studi di Milano, Department of Pathophysiology and Transplantation, Milan, Italy.
Insights
Two bleeding assessment tools, the ISTH-BAT and EN-RBD-BSS, effectively identify patients with congenital fibrinogen deficiencies (CFDs). Both tools demonstrate significant sensitivity in detecting fibrinogen deficiency and classifying bleeding severity.
Area of Science:
- Hematology
- Rare Diseases
- Diagnostic Tools
Background:
- Clinical history assessment is vital for laboratory test referrals.
- Bleeding Assessment Tools (BATs) standardize clinical evaluation.
- Congenital Fibrinogen Deficiencies (CFDs) require effective diagnostic tools.
Purpose of the Study:
- To compare the diagnostic adequacy of the ISTH-BAT and EN-RBD-BSS for identifying CFD patients.
- To analyze the correlation between BAT scores, fibrinogen levels, and clinical bleeding severity.
Main Methods:
- Inclusion of 100 Iranian patients diagnosed with CFDs.
- Performance of routine coagulation and fibrinogen-specific tests (Fg:Ag, Fg:C).
- Assessment of bleeding scores using both the ISTH-BAT and EN-RBD-BSS.
Main Results:
- A moderate, statistically significant correlation was observed between the ISTH-BAT and EN-RBD-BSS (r = .597, P < .001).
- Both tools showed a negative correlation with fibrinogen activity (Fg:C), indicating higher scores with lower activity.
- The ISTH-BAT and EN-RBD-BSS correctly identified 70% and 72% of patients with fibrinogen deficiencies, respectively.
Conclusions:
- The EN-RBD-BSS, alongside the ISTH-BAT, shows utility in identifying patients with CFDs.
- Both BATs exhibit significant sensitivity for detecting fibrinogen deficiency.
- Bleeding severity was accurately classified in approximately two-thirds of patients by these tools.
Background:
The assessment of clinical history is crucial before referring a patient for further laboratory testing. Bleeding assessment tools (BAT) are developed to standardize clinical evaluation. A small number of patients with congenital fibrinogen deficiencies (CFDs) have been evaluated with these tools without definitive results.
Aims:
We compared the adequacy of the ISTH-BAT and the European network of rare bleeding disorders bleeding score system (EN-RBD-BSS) to identify patients with CFDs. The correlation between the two BATs and fibrinogen levels and patient clinical grade severity was further analyzed.
Methods:
We included 100 Iranian patients with CFDs. Routine coagulation and fibrinogen-specific tests (fibrinogen antigen [Fg:Ag] and activity [Fg:C]) were performed. The ISTH-BAT and EN-RBD-BSS were used to assess the bleeding score (BS) of all patients.
Results:
The ISTH-BAT and EN-RBD-BSS median (range) were 4 (0-16) and 2.21 (-1.49 to 6.71), with a statistically significant moderate correlation between the two systems (r = .597, P < .001). In patients with quantitative deficiencies (afibrinogenemia and hypofibrinogenemia), the correlation between Fg:C and the ISTH-BAT was moderately negative (r = -.4, P < .001), while the correlation between Fg:C and the EN-RBD-BSS was weakly negative (r = -.38, P < .001). Overall, 70% and 72% of patients with fibrinogen deficiencies were correctly identified by both the ISTH-BAT and EN-RBD-BSS, respectively.
Conclusion:
These results suggest that in addition to the ISTH-BAT, the EN-RBD-BSS may also be useful in identifying CFD patients. We found a significant level of sensitivity for detecting fibrinogen deficiency in the two BATs, and bleeding severity classification correctly identified severity grades in almost two-thirds of patients.
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