caa a22 4500 465825702 CHVBK 20180323112148.0 cr unu---uuuuu 170327e19900701xx s 000 0 eng 10.1007/BF02832146 doi (NATIONALLICENCE)springer-10.1007/BF02832146 Meyer Ronald Department of Anesthesia, Northwestern University Medical School and Columbus Hospital, Chicago, IL aut Oxygen analyzers: Failure rates and life spans of galvanic cells [Elektronische Daten] [Ronald Meyer] Competing technologies exist for measuring oxygen concentrations in breathing circuits. Over a 4-year period, two types of oxygen analyzers were studied prospectively in routine clinical use to determine the incidence and nature of malfunctions. Newer AC-powered galvanic analyzers (North American DrÄger O2med) were compared with older, batterypowered polarographic analyzers (Ohmeda 201) by recording all failures and necessary repairs. The AC-powered galvanic analyzer had a significantly lower incidence of failures (0.12 ±0.04 failures per machine-month) than the battery-powered polarographic analyzer (4.0 ± 0.3 failures per machinemonth). Disposable capsules containing the active galvanic cells lasted 12 ± 7 months. Although the galvanic analyzers tended to remain out of service longer, awaiting the arrival of costly parts, the polarographic analyzers were more expensive to keep operating when calculations included the cost of time spent on repairs. Stocking galvanic capsules would have decreased the amount of time the galvanic analyzers were out of service, while increasing costs. In conclusion, galvanic oxygen analyzers appear capable of delivering more reliable service at a lower overall cost. By keeping the galvanic capsules exposed to room air during periods of storage, it should be possible to prolong their life span, further decreasing the cost of using them. In addition, recognizing the aberrations in their performance that warn of the exhaustion of the galvanic cells should permit timely reordering and minimize downtime. Little, Brown and Company, 1990 Monitoring: Equipment: analyzers nationallicence oxygen nationallicence Journal of Clinical Monitoring Springer Netherlands 6/3(1990-07-01), 196-202 0748-1977 6:3<196 1990 6 10877 https://doi.org/10.1007/BF02832146 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02832146 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Meyer Ronald Department of Anesthesia, Northwestern University Medical School and Columbus Hospital, Chicago, IL aut NATIONALLICENCE 773 0- Journal of Clinical Monitoring Springer Netherlands 6/3(1990-07-01), 196-202 0748-1977 6:3<196 1990 6 10877 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer