Sasaki et al et al reported the H3B2 model for evaluating a patient with upper gastrointestinal tract bleeding. This can help to identify a high-risk patient who should receive urgent hemostatic treatment. The authors are from National Disaster Medical Center and Nihon University.
H3B2 is based on the first letter for each of the 5 parameters.
Patient selection: suspected upper GI bleeding
Parameters:
(1) hematemesis
(2) heart rate in beats per minute
(3) hemoglobin in g/dL
(4) blood pressure (systolic) in mm Hg
(5) BUN (serum) in mg/dL
Parameter
Finding
Points
hematemesis
no
0
yes
1
heart rate
< 100 beats per minute
0
>= 100 beats per minute
1
hemoglobin
> 10 g/dL
0
<= 10 g/dL
1
blood pressure
> 100 mm Hg
0
<= 100 mm Hg
1
BUN
< 22.4 mg/dL
0
>= 22.4 mg/dL
2
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 6
• A score >= 3 indicates high risk bleeding.
Performance:
• The area under the ROC curve is 0.73.
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