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Ottawa Heart Failure Risk Scale (OHFRS)

Stroke or TIA
No 0
Yes 1
Intubation for respiratory distress
No 0
Yes 2
Heart rate on ED arrival ≥110
No 0
Yes 2
SaO₂ <90% on arrival
No 0
Yes 1
Heart rate ≥110 during 3-minutes walk test (or too ill to perform walk test)
No 0
Yes 1
New ischemic changes on EKG
No 0
Yes 2
Urea ≥12 mmol/L (33 mg/dL)
No 0
Yes 1
Serum CO₂ ≥35 mmol/L (mEq/L)
No 0
Yes 2
Troponin I or T elevated to MI level
No 0
Yes 2
NT-proBNP ≥5,000 ng/L (pg/mL)
No 0
Yes 1
Result:

Background

Result Interpretation

Ranges Ranges