Humidified air is frequently used in the treatment of croup, although studies supporting its efficacy in reducing symptoms are limited. Although humidified air does not reduce subglottic edema, it may provide other benefits. Inhalation of moist air, relative to dry air, may decrease drying of inflamed mucosal surfaces and reduce inspissation of secretions. In addition, a mist source may provide a sense of comfort and reassurance to both the child and parents.
In medical settings, mist therapy may be provided by saline nebulization treatment. However, some guidelines recommend against the use of mist therapy for children if the child is agitated.
Use of steam to provide a Mist therapy should be discouraged because of the risk of burns.
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