Which of the following is true concerning heat and moisture exchangers?

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Heat and moisture exchangers might reduce the incidence of nosocomial infections.Passive humidifier heat and moisture exchangers have been successfully used to meet the short-term humidification needs of spontaneously breathing and mechanically ventilated patients with endotracheal and tracheostomy tubes.However,a heat and moisture exchanger is not a passover humidifier.The passover humidifier directs gas over a liquid or liquid-saturated surface.Heat and moisture exchanging filters have an increased internal surface area and are capable of providing moisture output in the range of 18 mg H₂O/L to 28 mg H₂O/L.According to the American Association for Respiratory Care's Clinical Practice Guideline,heat and moisture exchangers should not be used for long-term humidification of patients who are receiving invasive mechanical ventilation.

Which of the Following Is True Concerning Heat and Moisture