egans ch. 38 with correct answers 100% 2026

egans ch. 38 with correct answers 100% 2026 1. What is the point in the respiratory track where inspired gas reaches body temperature, ambient pressure, saturated (BTPS) conditions? - Correct Answer ISOTHERMIC SATURATION BOUNDARY 2. What is the isothermic saturation boundary (ISB)? - Correct Answer Point in the respiratory track where inspired gas reaches body temperature, ambient pressure, saturated btps what causes the isothermic saturation boundary (ISB) to shift farther down into the airways? - Correct Answer 1. Decreased ambient temperature 2. Increased tidal volume (VT) 3. Endotracheal intubation What is the primary goal of humidity therapy? - Correct Answer MAINTAIN NORMAL PHYSIOLOGIC CONDITIONS 2. What are the indications for warming inspired gases? - Correct Answer 1. Treating a patient whose airways are reactive to cold 2. Providing humidification when the upper airway is bypassed 3. Treating a patient with a low body temperature (hypothermia) 2. What happens when there is administration of dry gases at flows exceeding 4 L/min? - Correct Answer 1. Structural damage 2. Heat loss 3. Water loss What does inhalation of dry gases cause? - Correct Answer 1. Increase viscosity of secretions. 2. Impair mucociliary motility. 3. Increase airway irritability. 8. What inspired conditions should be maintained when delivering medical gases to the nose or mouth? - Correct Answer 50% RELATIVE HUMIDITY (RH) AT 20-22 DEGREES CELSIUS 8. What inspired conditions should be maintained when delivering medical gases to the hypopharynx, as when administering oxygen by nasal catheter? - Correct Answer 95% RH AT 29-32C What inspired conditions should be maintained when delivering medical gases directly into the trachea through an endotracheal tube or a tracheotomy tube? - Correct Answer 100% RELATIVE HUMIDITY AT 32-35 C What are the clinical indications for delivering cool humidified gas? - Correct Answer 1.Postextubation edema 2. Upper airway inflammation 3. Croup (laryngotracheal bronchitis) 4. Epiglottitis What device adds molecular water to gas? - Correct Answer HUMIDIFIER What factors affect a humidifier's performance? - Correct Answer 1. Surface area 2. Temperature 3. Time of contact What is the most important factor determining a humidifier's performance? - Correct Answer TEMPERATURE