ISTH-BAT scoring key for bleeding episodes
| Type of bleeding . | BAT score . | ||||
|---|---|---|---|---|---|
| 0 . | 1 . | 2 . | 3 . | 4 . | |
| Epistaxis | None/trivial | >5 per year or more than 10 min | Consultation only | Packing, cauterization, or antifibrinolytics | Blood transfusion or replacement therapy (use of hemostatic blood components or rFVIIa) or desmopressin |
| Cutaneous | None/trivial | ≥5 bruises (>1 cm) in exposed areas | Consultation only | Extensive | Spontaneous hematoma requiring blood transfusion |
| Bleeding from minor wounds | None/trivial | >5 per year or more than 10 min | Consultation only | Surgical hemostasis | Blood transfusion, replacement therapy, or desmopressin |
| Oral cavity | None/trivial | Present | Consultation only | Surgical hemostasis or antifibrinolytics | Blood transfusion, replacement therapy, or desmopressin |
| Gastrointestinal bleeding | None/trivial | Present (not associated with ulcer, portal hypertension, hemorrhoids, angiodysplasia) | Consultation only | Surgical hemostasis, antifibrinolytics | Blood transfusion, replacement therapy, or desmopressin |
| Hematuria | None/trivial | Present (macroscopic) | Consultation only | Surgical hemostasis, iron therapy | Blood transfusion, replacement therapy, or desmopressin |
| Tooth extraction | None/trivial or none performed | Reported in ≤25% of all procedures, no intervention | Reported in >25% of all procedures, no intervention | Resuturing or packing | Blood transfusion, replacement therapy, or desmopressin |
| Surgery | None/trivial or none performed | Reported in ≤25% of all procedures, no intervention | Reported in >25% of all procedures, no intervention | Surgical hemostasis or antifibrinolytics | Blood transfusion, replacement therapy or desmopressin |
| Menorrhagia | None/trivial | Consultation only or changing pads more frequently than once every 2 hours or clot and flooding or pictorial bleeding assessment chart score >100 | Time off work or school more than twice per year or requiring antifibrinolytics or hormonal or iron therapy | Requiring combined treatment with antifibrinolytics and hormonal therapy or present since menarche and for more than 12 months | Acute menorrhagia requiring admission and emergency treatment or requiring blood transfusion, replacement therapy, desmopressin, or requiring dilatation and curettage or endometrial ablation or hysterectomy |
| Postpartum hemorrhage | None/trivial or no deliveries | Consultation only or use of syntocin or lochia for >6 weeks | Iron therapy or antifibrinolytics | Requiring blood transfusion, replacement therapy, desmopressin or requiring examination under anesthesia and/or the use of a uterine balloon or package to tamponade the uterus | Any procedure requiring critical care or surgical intervention (eg, hysterectomy, internal iliac artery ligation, uterine artery embolization, uterine brace sutures |
| Muscle hematomas | Never | Posttrauma, no therapy | Spontaneous, no therapy | Spontaneous or traumatic, requiring desmopressin or replacement therapy | Spontaneous or traumatic, requiring surgical intervention or blood transfusion |
| Hemarthrosis | Never | Posttrauma, no therapy | Spontaneous, no therapy | Spontaneous or traumatic, requiring desmopressin or replacement therapy | Spontaneous or traumatic, requiring surgical intervention or blood transfusion |
| Central nervous system bleeding | Never | — | — | Subdural, any intervention | Intracerebral, any intervention |
| Other bleeding | None/trivial | Present | Consultation only | Surgical hemostasis, antifibrinolytics | Blood transfusion or replacement therapy or desmopressin |
| Type of bleeding . | BAT score . | ||||
|---|---|---|---|---|---|
| 0 . | 1 . | 2 . | 3 . | 4 . | |
| Epistaxis | None/trivial | >5 per year or more than 10 min | Consultation only | Packing, cauterization, or antifibrinolytics | Blood transfusion or replacement therapy (use of hemostatic blood components or rFVIIa) or desmopressin |
| Cutaneous | None/trivial | ≥5 bruises (>1 cm) in exposed areas | Consultation only | Extensive | Spontaneous hematoma requiring blood transfusion |
| Bleeding from minor wounds | None/trivial | >5 per year or more than 10 min | Consultation only | Surgical hemostasis | Blood transfusion, replacement therapy, or desmopressin |
| Oral cavity | None/trivial | Present | Consultation only | Surgical hemostasis or antifibrinolytics | Blood transfusion, replacement therapy, or desmopressin |
| Gastrointestinal bleeding | None/trivial | Present (not associated with ulcer, portal hypertension, hemorrhoids, angiodysplasia) | Consultation only | Surgical hemostasis, antifibrinolytics | Blood transfusion, replacement therapy, or desmopressin |
| Hematuria | None/trivial | Present (macroscopic) | Consultation only | Surgical hemostasis, iron therapy | Blood transfusion, replacement therapy, or desmopressin |
| Tooth extraction | None/trivial or none performed | Reported in ≤25% of all procedures, no intervention | Reported in >25% of all procedures, no intervention | Resuturing or packing | Blood transfusion, replacement therapy, or desmopressin |
| Surgery | None/trivial or none performed | Reported in ≤25% of all procedures, no intervention | Reported in >25% of all procedures, no intervention | Surgical hemostasis or antifibrinolytics | Blood transfusion, replacement therapy or desmopressin |
| Menorrhagia | None/trivial | Consultation only or changing pads more frequently than once every 2 hours or clot and flooding or pictorial bleeding assessment chart score >100 | Time off work or school more than twice per year or requiring antifibrinolytics or hormonal or iron therapy | Requiring combined treatment with antifibrinolytics and hormonal therapy or present since menarche and for more than 12 months | Acute menorrhagia requiring admission and emergency treatment or requiring blood transfusion, replacement therapy, desmopressin, or requiring dilatation and curettage or endometrial ablation or hysterectomy |
| Postpartum hemorrhage | None/trivial or no deliveries | Consultation only or use of syntocin or lochia for >6 weeks | Iron therapy or antifibrinolytics | Requiring blood transfusion, replacement therapy, desmopressin or requiring examination under anesthesia and/or the use of a uterine balloon or package to tamponade the uterus | Any procedure requiring critical care or surgical intervention (eg, hysterectomy, internal iliac artery ligation, uterine artery embolization, uterine brace sutures |
| Muscle hematomas | Never | Posttrauma, no therapy | Spontaneous, no therapy | Spontaneous or traumatic, requiring desmopressin or replacement therapy | Spontaneous or traumatic, requiring surgical intervention or blood transfusion |
| Hemarthrosis | Never | Posttrauma, no therapy | Spontaneous, no therapy | Spontaneous or traumatic, requiring desmopressin or replacement therapy | Spontaneous or traumatic, requiring surgical intervention or blood transfusion |
| Central nervous system bleeding | Never | — | — | Subdural, any intervention | Intracerebral, any intervention |
| Other bleeding | None/trivial | Present | Consultation only | Surgical hemostasis, antifibrinolytics | Blood transfusion or replacement therapy or desmopressin |
Table adapted from Rodeghiero et al.13