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To the Editor.—Dr Melvin Sher's application of an air splint to the amputated extremity (Arch Surg 108:746, 1974) brings back memories of when I struggled with this modality of treatment. With reference to Dr. Clippinger's "Editorial Comment" on determining the optimum range of pressure, I would like to mention a brief preliminary report on a controlled pressure plastic dressing by Lehmann and Hay (Surgery 35:400, 1954). From research with animals (Am J Physiol 158:113, 1949), it seems that pressure above 30 mm Hg is noxious; however, the lower levels of pressure are usually adequate. This concept is also important in the use of the pneumatic pressure splint for immobilization of fractures.
LEHMANN AL. The Air Splint. Arch Surg. 1974;109(2):334. doi:10.1001/archsurg.1974.01360020194040
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