Chapter 38 egans with correct answers 100% 2026

Chapter 38 egans with correct answers 100% 2026 A mist tents and hoods are used for what and what type of patient? - Correct Answer To deliver bland aerosol therapy to infants and small children that may not tolerate direct airway appliances such as a mask. Co2 buildup may be a problem hygrometer - Correct Answer an instrument for measuring the humidity of the air or a gas. isothermic saturation boundary (ISB) - Correct Answer Point at which Inspired gas reaches body humidity. 5 centimeters just below the carina Inspissated - Correct Answer Being thickened, dried, or made less fluid by evaporation What are four factors that can shift the isothermic saturation boundary ISB distally? - Correct Answer -a person breaths through their mouth (not nose) -a person breaths cold dry air -the upper airway is bypassed -minute ventilation is higher than normal What are four consequences of prolong inspiration of improperly conditioned gases? - Correct Answer -Reduce of ciliary motility -increase mucous production -drying and thickening of secretions -destruction of airway epithelium& atelectasis Liter flow is exceeding what value requires humidification? - Correct Answer 4 L/minute What is one situation where you will always provide humidification? - Correct Answer When upper airway is bypassed What are two indications for humidification? - Correct Answer -Bypass of the upper airway -humidifying dry medical gases What are four variables that affect the quality of performance of a humidifier? - Correct Answer Temperature (most important) surface area time of contact thermal masses Bubble humidifiers are added to what type of oxygen delivery system? - Correct Answer oronasal oxygen delivery systems (nasal cannula) What is the typical range for absolute humidity during delivery by a bubble humidifier? what does this amount convert to in terms of relative body humidity? - Correct Answer Output 15 to 20 mg/L in RH 25% What safety devices incorporated in the design of a bubble humidifier? - Correct Answer A pop off valve; A spring loaded valve that releases pressure is greater than two psi What are three primary advantages of a Passover humidifier compared to a bubble humidifier? - Correct Answer It maintains humidification high flow rates little or no resistance to gas flow no aerosol products What is the principle of operation of a simple condenser humidifier? - Correct Answer Contain a condenser element with high thermal conductivity. Inspired air cools the condenser elements, and expired water vapor condenses directly on its surface and rewarm is it. On next inspiration, cool, dry air is warm and humidified as it passes over the condenser element. recapture's ~50% of the patients exhaled moisture What is the principle of operation of a hydroscopic condenser humidifier? - Correct Answer Low thermal conductivity element that is impregnated with hydroscopic salts. the salt plus the element captures heat and moisture during inhalation the moisture is return to the gas without cooling What is the principle of operation for a hydrophobic condenser humidifier? - Correct Answer Uses a water repellent element with a large surface area and low thermal conductivity. The element heat up on exhalation. On inhalation, the convincer element cause considerably, capturing water(humidify) to add to the next breath. What are five contraindications of using HME according to the AARC clinical practice guidelines of humidification during mechanical ventilation? - Correct Answer -Presence of copious, thick, bloody secretions