Diving Hyperb Med
-
Patient ventilators for use in the hyperbaric chamber need to be of special design; any malfunction could have disastrous consequences. We report two serious problems with a recently purchased Siaretron 1000 Iper™ ventilator. ⋯ These problems may cause serious diagnostic and clinical consequences if not identified as equipment malfunction issues. A malfunction of the integrated memory in the microchip on the main board was said to cause the PCV malfunction. The manufacturer replaced the main board, which corrected the problem. The solution offered for the VCV problem was to change FiO2 in steps of 0.1 per breath, which eliminates the tidal volume surges. We feel it is extremely important that all users of the Siaretron 1000 Iper™ are made aware of these problems as they are not described in the user manual or elsewhere.