Alveolar-Arterial (A-a) Oxygen Gradient
Calculates the A-a oxygen gradient to assess for causes of hypoxemia. Normal gradient increases with age and FiO2. Elevated gradient suggest...
Arterial Blood Gas (ABG) Analyzer
Comprehensive ABG interpretation including pH, PaCO2, HCO3 analysis, anion gap, compensation assessment, and oxygenation evaluation.
Bicarbonate Deficit
Calculates bicarbonate deficit in metabolic acidosis to guide bicarbonate replacement therapy.
Epworth Sleepiness Scale (ESS)
The Epworth Sleepiness Scale assesses daytime sleepiness in 8 situations to screen for sleep disorders including obstructive sleep apnea. Sc...
Predicted Peak Expiratory Flow (PEF)
Calculates predicted peak expiratory flow based on age, height, and sex using NHANES III reference equations (Hankinson 1999). Used to asses...
Six-Minute Walk Distance (6MWD)
Calculates predicted six-minute walk distance using reference equations (Enright 1998, Troosters 1999). Compares measured 6MWD to predicted ...
SpO2/FiO2 Ratio (SF Ratio)
Calculates the SpO2/FiO2 ratio as a non-invasive alternative to PaO2/FiO2 (PF) ratio when ABG is unavailable. Used for ARDS screening and se...
STOP-BANG Questionnaire
The STOP-BANG questionnaire is a validated screening tool for obstructive sleep apnea (OSA). It has high sensitivity (93-96% for moderate-se...