Respiratory Care, Vol. 36

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Excerpt from Respiratory Care, Vol. 36: The Official Journal of the American Association for Respiratory Therapy, April, 1991The battery life of each electric suction system was evaluated by determining the length of suction time required for a 25% reduction in maximum suction pressure to occur. The setup for measure ment was the same used during the evaluation of maximum suction (fig. During evaluation, each suction system was run for 30 seconds with the tubing clamped, following this, the system was shut off for 15 seconds, and then run again for 30 seconds. This was repeated until a 25% reduction in maximum pressure was observed. Prior to this evaluation, each suction system was charged for at least 24 hours. Only one trial was performed on each system.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.