Ottawa Heart Failure Risk Scale (OHFRS) calculator

Ottawa Heart Failure Risk Scale (OHFRS): 0 — Below admission threshold (0–1 points). Interpretation: Below admission threshold (0–1 points) What to do: Interpret only within the cited source population and criteria; use alongside complete clinical assessment. Inputs: History of stroke or TIA (+1): false; Prior intubation for respiratory distress (+2): false; Heart rate ≥110/min on ED arrival (+2): false; SaO2 <90% on arrival (+1): false; Heart rate ≥110/min during 3-minute walk test, or too ill to walk (+1): false; New ischemic changes on ECG (+2): false; Urea ≥12 mmol/L (+1): false; Serum CO2 (bicarbonate) ≥35 mmol/L (+2): false; Troponin elevated to myocardial infarction level (+2): false; NT-proBNP ≥5,000 ng/L (+1): false Source: Stiell IG et al. A risk scoring system to identify emergency department patients with heart failure at high risk for serious adverse events; validated in Stiell IG et al. Prospective and Explicit Clinical Validation of the Ottawa Heart Failure Risk Scale. Acad Emerg Med. DOI: 10.1111/acem.13141. PMID: 27976497. Scope: OHFRS (max 15 points): history of stroke/TIA (1), prior intubation for respiratory distress (2), heart rate ≥110/min on ED arrival (2), SaO2 <90% on arrival (1), heart rate ≥110/min during a 3-minute walk test or too ill to walk (1), new ischemic ECG changes (2), urea ≥12 mmol/L (1), serum CO2 (bicarbonate) ≥35 mmol/L (2), troponin elevated to MI level (2), NT-proBNP ≥5,000 ng/L (1). Score 0-1 = below admission threshold; score ≥2 = admission threshold met. (2017)