Exam

Ottawa Heart Failure Risk Score

Ottawa Heart Failure Risk Score, Ottawa Heart Failure Risk Scale

History
1. Score 1: Stroke or Transient Ischemic Attack (TIA)
2. Score 2: Intubation for respiratory distress
Exam
1. Score 2: Heart Rate on ED arrival >110 bpm
2. Score 1: Oxygen Saturation<90% on arrival
3. Score 1: Heart Rate >110 during 3 minute walk test (or unable to perform)
Investigation
1. Score 2: Electrocardiogram (EKG) with acute ischemic changes
2. Score 1: Blood Urea Nitrogen (BUN) >33.6 mg/dl (12 mmol/L)
3. Score 2: Serum CO2 (or serum bicarbonate) >35 mg/dl
4. Score 2: Troponin I or Troponin T elevated consistent with Myocardial Infarction levels
5. Score 1: NT-proBNP >5000 ng/L

Interpretation
Risk of serious adverse event (death, readmission, intubation, NIPPV, ACS) in next 14 days

Score 0: Low Risk (2.8% serious adverse event risk in next 14 days)
Score 1-2: Moderate Risk (5.1-9.2% serious adverse event risk in next 14 days)
Score 3-4: High Risk (15.9-26.1% serious adverse event risk in next 14 days)
Score 5-9: Very High Risk (39.8-89.0% serious adverse event risk in next 14 days)