High-frequency tools that don't belong to one subspecialty but come up constantly: GOLD COPD staging, anion gap, AHI classification, bronchodilator reversibility criteria, pack-year history, ideal body weight, and the mMRC dyspnea scale. Practical, fast, and directly tied to management decisions.
8 calculators available
Grades COPD severity from FEV₁ % predicted plus symptoms and exacerbations.
Events per hour from a sleep study — the diagnostic measure of sleep apnea severity.
FEV₁ improvement after a bronchodilator — supports an asthma diagnosis.
Screens for unmeasured acids to classify a metabolic acidosis.
Quantifies smoking history for lung disease and cancer risk.
Devine ideal body weight from height and sex — standalone.
0–4 grade of how much breathlessness limits daily activity.
Measures physical nicotine dependence to guide cessation.