Specialty Hub
Oxygen Therapy
Pick the right device, set the right target, and quantify the problem — delivery devices, FiO₂ ranges, titration, and the oxygenation indices that drive escalation.
Guides
Device selection and titration, explained.
Oxygen Delivery Devices
Low-flow, high-flow, and reservoir oxygen devices compared — nasal cannula, simple and Venturi masks, partial and non-rebreathers, and HFNC — with flow rates, approximate FiO₂, and the bedside rules RTs use to pick the right one.
Oxygen Titration & Escalation
How to set SpO₂ targets, climb the oxygen escalation ladder, and recognize when a patient needs to step up — with the correct mechanism behind oxygen-induced hypercapnia in COPD and why you never withhold oxygen from a hypoxemic patient.
High-Flow Nasal Cannula (HFNC) Therapy
How heated, humidified high-flow nasal cannula works and where it fits — the flow, FiO₂, dead-space washout, and modest PEEP it delivers, the indications, the ROX index for tracking success, and how to set it up and wean it.
Oxygen Toxicity & the Hazards of Oxygen Therapy
Oxygen is a drug with real harms — pulmonary and CNS oxygen toxicity, absorption atelectasis, oxygen-induced hypercapnia in COPD, retinopathy of prematurity, and fire risk — and the targeted SpO₂ strategy that avoids them.
Interactive Practice
Practice Tools
Work ARDS severity from the P/F ratio, drill the Venturi air-entrainment math, quantify oxygenation, and plan oxygen delivery — every formula shown with the result.
Clinical References
Device flow ranges and oxygenation thresholds.
Oxygen Device Flow Ranges & FiO2
Flow rates and approximate FiO₂ delivered by common oxygen devices — nasal cannula, simple mask, Venturi mask, partial and non-rebreather, HFNC, and trach collar — with the low-flow vs high-flow distinction.
Hypoxemia Severity & Oxygenation Indices
Hypoxemia severity thresholds by PaO₂, the SpO₂–PaO₂ correlation and dissociation-curve shifts, and the oxygenation indices RTs use — P/F ratio, A–a gradient, S/F ratio, and oxygenation index.
Quick Charts
Devices compared at a glance.
Oxygen Devices Comparison Chart
Side-by-side comparison of oxygen delivery devices — nasal cannula, simple mask, Venturi mask, partial and non-rebreather, HFNC, and trach collar — by flow, approximate FiO₂, performance, best use, and what to watch for.
HFNC vs NIV vs Conventional Oxygen
Conventional oxygen, high-flow nasal cannula, and noninvasive ventilation compared — the flow and FiO₂ each delivers, the airway pressure and ventilatory support, the best-fit indications, and the failure signs that mean escalate.
Suggested Learning Path
From device choice to oxygenation math.
Related Specialties
Oxygen therapy connects directly to these areas.