J Clin Monit Comput - Effect of planecta and ROSE? on the frequency characteristics of blood pressure-transducer kits.

Tópicos

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Resumo

Pressure-transducer kits have frequency characteristics such as natural frequency and damping coefficient, which affect the monitoring accuracy. The aim of the present study was to investigate the effect of planecta ports and a damping device (ROSE?, Argon Medical Devices, TX, USA) on the frequency characteristics of pressure-transducer kits. The FloTrac sensor kit (Edwards Lifesciences, CA, USA) and the DTXplus transducer kit (Argon Medical Devices) were prepared with planecta ports, and their frequency characteristics were tested with or without ROSE?. The natural frequency and damping coefficient of each kit were obtained using frequency characteristics analysis software and evaluated by plotting them on the Gardner's chart. By inserting a planecta port, the natural frequency markedly decreased in both the FloTrac sensor kit (from 40 to 22?Hz) and the DTXplus transducer kit (from 35 to 22?Hz). In both kits with one planecta port, the damping coefficient markedly increased by insertion of ROSE? from 0.2 to 0.5, optimising frequency characteristics. In both kits with two planecta ports, however, the natural frequency decreased from 22 to 12?Hz. The damping coefficient increased from 0.2 to 0.8 by insertion of ROSE?; however, optimisation was not achieved even by ROSE? insertion. Planecta ports decrease the natural frequency of the kit. ROSE? is useful to optimise the frequency characteristics in the kits without or with one planecta port. However, optimisation is difficult with two or more planecta ports, even with the ROSE? device.

Resumo Limpo

pressuretransduc kit frequenc characterist natur frequenc damp coeffici affect monitor accuraci aim present studi investig effect planecta port damp devic rose argon medic devic tx usa frequenc characterist pressuretransduc kit flotrac sensor kit edward lifesci ca usa dtxplus transduc kit argon medic devic prepar planecta port frequenc characterist test without rose natur frequenc damp coeffici kit obtain use frequenc characterist analysi softwar evalu plot gardner chart insert planecta port natur frequenc mark decreas flotrac sensor kit hz dtxplus transduc kit hz kit one planecta port damp coeffici mark increas insert rose optimis frequenc characterist kit two planecta port howev natur frequenc decreas hz damp coeffici increas insert rose howev optimis achiev even rose insert planecta port decreas natur frequenc kit rose use optimis frequenc characterist kit without one planecta port howev optimis difficult two planecta port even rose devic

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