Oxygen Therapy and Humidification – Complete Critical Care Nursing Guide | Delivery Methods & Devices | Verified Q&A | Latest 2026 Update | Graded A+

This comprehensive study guide is designed for nursing students preparing for exams in Critical Care Nursing - Oxygen Therapy and Humidification. Covering all essential topics from basic principles to advanced delivery systems, this document is your ultimate resource for mastering oxygen administration in critical care settings. Key topics include the definition and purpose of oxygen therapy, assessment parameters (ABG analysis, pulse oximetry, clinical signs), and indications for therapy. The document provides detailed coverage of low-flow delivery systems (nasal cannula, simple mask, partial rebreather, non-rebreather, face tent) and high-flow systems (Venturi mask with color-coded adapters, T-piece, ventilator, tracheostomy mask). Enclosures including oxygen hood and oxygen tent are discussed. Monitoring parameters, safety guidelines, risks and hazards (oxygen toxicity, CO2 retention, absorption atelectasis), and humidification methods (bubble jars, HME, hot water baths) are thoroughly covered. Flow rates and FiO2 concentrations for each device are provided. Updated for 2026 – Perfect for critical care nursing, medical-surgical nursing, NCLEX preparation, and clinical skills exams. This guide features verified step-by-step procedures with A+ graded solutions, helping you achieve exam success with confidence.