Ottawa COPD Risk ScoreLoading...Coronary artery bypass graft historyNo0Yes+1Intervention for PVDNo0Yes+1Intubation for respiratory distress historyNo0Yes+2HR ≥ 110/min (on arrival to ED)No0Yes+2Too ill to do walk test after treatment in EDNo0Yes+2Acute ischemic changes on EKGNo0Yes+2Pulmonary congestion on CXRNo0Yes+1Hb < 10 g/dL (100 g/L)No0Yes+3Urea ≥ 12 mmol/L (BUN ≥ 34 mg/dL)No0Yes+1Serum CO2 ≥ 35 mEq/L (35 mmol/L)No0Yes+1Indications for UseInsights & Cautions