Aerosol therapy has become increasingly popular in the treatment of respiratory infection. For effective use of this method, a constant pressure should be employed in the nebulizer. The small bulbs supplied with many nebulizers on the market do not do this satisfactorily. Compressed-air pressure is simple to use if the office or hospital is supplied with it. If this is not available, the large commercial oxygen tank with the flow-meter and Y-tube attachment has proved most convenient and relatively inexpensive. In the home a small portable oxygen tank with a small needle valve is satisfactory. However, this form of tank is expensive, inconvenient, and bulky and does not lend itself to general use. To make aerosol therapy available in the home in an inexpensive, convenient form, a bag and bulb set and about 3 ft. of rubber tubing are needed (see figure). The double-bulb cautery set manufactured by the Davol
Holoubek JE. USE OF BULB AND BAG SET IN AEROSOL THERAPY. JAMA. 1956;161(9):875. doi:10.1001/jama.1956.62970090016017g
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