Pulmonary & Respiratory Therapy Tools
Explore respiratory calculators, ABG and VBG practice tools, oxygenation tools, hemodynamic calculators, ventilator support tools, and bedside references built to help clinicians and students move faster with more confidence.
ABGenius
Practice arterial blood gas interpretation with realistic cases, compensation logic, oxygenation categories, and bedside-style reasoning.
VBGenius
Build venous blood gas interpretation skill with focused acid-base practice, clean case flow, and fast educational repetition.
OxyGenius
Practice PaO₂ classification, P/F ratio severity, and Berlin ARDS criteria using realistic ICU oxygenation cases.
ABG Analyzer
Quickly interpret pH, PaCO₂, HCO₃⁻, and PaO₂ to identify disorder type, compensation status, and oxygenation severity.
ARDSNet Assistant
Use PulmTools guidance built around the ARDSNet protocol to support PEEP and FiO₂ titration decisions more efficiently.
Start with the clinical problem, then open the right calculator
The tools below are grouped by how clinicians actually think: acid-base interpretation, oxygenation and respiratory failure, ventilator mechanics, and perfusion. Use the workflow cards to jump into the most common starting points.
Acid-base workflow
Practice with ABGenius, confirm patterns in the ABG Analyzer, interpret neonatal cord / cap / VBG gases, then review compensation calculators.
Start workflow →Oxygenation workflow
Start with OxyGenius practice, then use oxygen tank duration, Berlin ARDS Criteria, Murray Lung Injury Score, P/F ratio, oxygenation index, pre/post-ductal gradients, ROX Index, A–a gradient, PE Rule-Out, VV ECMO Referral, and the ECMO Contraindications Checklist to frame oxygen supply, hypoxemia, ARDS severity, referral risk, and escalation.
Start workflow →Ventilator workflow
Pair ARDSNet, IBW, dead space, desired ventilation, and RSBI for cleaner ventilator reasoning.
Start workflow →Core Calculators · Acid-Base
Practice, analyze, and troubleshoot blood gas interpretation with tools built around real acid-base patterns, compensation logic, and oxygenation status.
Interactive ABG practice built for real clinical patterns, compensation logic, and oxygenation assessment.
Open tool →Focused VBG practice with acid-base interpretation and compensation training without oxygenation distraction.
Open tool →Interpret umbilical arterial or venous cord gases with fetal acid-base classification, acidemia severity grading, and sampling reliability warnings.
Open tool →Interpret neonatal and pediatric capillary blood gases with acid-base analysis, perfusion-aware confidence scoring, and SpO₂ correlation guardrails.
Open tool →Interpret neonatal and pediatric venous blood gases with age-aware acid-base framing, PvCO₂ trend guidance, venous PO₂ guardrails, and bedside teaching notes.
Open tool →Rapid arterial blood gas interpretation for clinicians who need bedside speed and cleaner thinking.
Open tool →Analyze venous blood gases quickly and reinforce pattern recognition for acid-base disorders.
Open tool →Estimate expected PaCO₂ in metabolic acidosis and assess whether respiratory compensation fits.
Open tool →Estimate expected HCO₃⁻ changes in acute and chronic respiratory acidosis or alkalosis and compare measured bicarbonate to expected compensation.
Open tool →Calculate anion gap, corrected anion gap, and related values when evaluating metabolic acidosis.
Open tool →Compare gap and bicarbonate changes to help uncover mixed metabolic acid-base disorders.
Open tool →Oxygenation & Respiratory Failure
Frame hypoxemia, oxygenation severity, ARDS risk, and HFNC escalation with tools that translate physiology into fast bedside context.
Practice PaO₂ classification, P/F ratio severity, and Berlin ARDS criteria using realistic ICU oxygenation cases.
Open tool →Assess oxygenation severity using P/F ratio and oxygenation index to support escalation decisions.
Open tool →Compare preductal and postductal SpO₂ / PaO₂ to detect ductal shunting, PPHN physiology, reverse differential cyanosis, and CCHD screening patterns.
Open tool →Calculate how long an oxygen cylinder will last using tank pressure, flow rate, tank type, and safe residual PSI with E cylinder selected by default for common portable oxygen use.
Open tool →Estimate HFNC success or failure risk with a fast ROX Index calculation using SpO₂, FiO₂, and respiratory rate.
Open tool →Apply the Berlin Definition of ARDS using timing, bilateral opacities, non-cardiogenic respiratory failure, PEEP/CPAP/EPAP support, and P/F ratio severity classification.
Open tool →Calculate ARDS lung injury severity using chest radiograph involvement, PaO₂/FiO₂ ratio, PEEP, and static compliance with VV ECMO referral context.
Open tool →Combine Wells Score and PERC criteria to support pulmonary embolism risk assessment, D-dimer decisions, and imaging pathway guidance.
Open tool →Screen severe ARDS patients for VV ECMO referral triggers using P/F ratio, hypercapnic acidosis, ventilator intensity, rescue therapy status, and contraindication cautions.
Open tool →Screen major and relative ECMO contraindication concerns before referral discussions, including neurologic injury, bleeding, anticoagulation limitations, prolonged ventilation, frailty, irreversible disease, and multiorgan failure.
Open tool →Estimate the alveolar-arterial oxygen gradient to better frame the cause of hypoxemia.
Open tool →Ventilation & Mechanics
Connect ventilator settings, body size, dead space, weaning, and CO₂ clearance with practical calculations that support respiratory decision-making.
Use PulmTools guidance built around the ARDSNet protocol to support PEEP and FiO₂ titration decisions more efficiently.
Open tool →Calculate minute ventilation and alveolar ventilation to better understand CO₂ clearance and effective ventilation.
Open tool →Estimate VD/VT and dead space volume using PaCO₂, ETCO₂, and tidal volume.
Open tool →Project target minute ventilation based on desired PaCO₂ using inverse proportionality logic.
Open tool →Estimate ideal body weight for ventilator tidal volume planning and other clinical calculations.
Open tool →Calculate the rapid shallow breathing index (RSBI) to support ventilator weaning and extubation readiness assessment.
Open tool →Hemodynamics & Perfusion
Respiratory care often overlaps with perfusion, oxygen delivery, shock physiology, and cardiac output. These tools help connect those dots quickly.
Explore how hemoglobin, saturation, cardiac output, and oxygen consumption influence SvO₂.
Open tool →Compute cardiac output from oxygen consumption and arterial-venous oxygen content difference.
Open tool →Calculate mean arterial pressure, shock index, and pulse pressure to assess early hemodynamic stress.
Open tool →Pair the calculators with deeper clinical reading
PulmTools works best when calculators, reference pages, and educational content reinforce each other. Use these pages to go deeper on respiratory physiology, compensation, oxygenation, and escalation concepts.
Jump from calculator to bedside reference
Use the Resources hub when you want quick-reference tables, guideline framing, and practical bedside notes before or after using a calculator.