BAP65 Calculator Bap 65 Score BAP 65 Score for Acute Exacerbation of COPD BUN ≥25 mg/dL (8.9 mmol/L) Altered mental status Pulse ≥109 beats/min Age, years Calculate Loading… RESULTS Fill the calculator form and click on Calculate button to get result here Class I BAP 0 Routine management of COPD exacerbation 0.3 % In-hospital mortality 0.3% requiring intubation within 48 hrs