Design NMT Monitor By Technology Of Virtual Instrument

Acting on neuromuscular junction, muscle relaxant can block excitation conduction from nerve to muscle, thus relaxing the muscle.In operation of general anesthesia, administering muscle relaxant to patient properly can not only provide satisfactory muscle relaxation for surgery, but also eliminate the dangers caused by patient's cough and muscle convulsion.Because of muscle relaxant's potential toxic effect and complicated action mechanism, anesthetist must closely monitor and evaluate patient's condition of muscle relaxation to achieve the following purpose:(1) Administer muscle relaxant properly to any patients.(2) Take the opportunity of tracheal intubation and the opportunity of administering antagonist.(3) Adjust the degree of muscle relaxation according to the need of surgery.(4) After surgery, evaluate the recovery of muscle relaxation and distinguish cause of breath inhibition.(5) Monitor the character change of neuromuscular block.(6) Explore and compare the clinical effect of different muscle relaxants.The stimulus to motor nerve can cause relevant limb, such as fingers and toes, to twitch. The acceleration of the twitch has a close correlation with the degree of neuromuscular block. Thus, the degree of neuromuscular block can be evaluated by measuring the acceleration of the twitch.The monitor employing this method to evaluate neuromuscular transmission (NMT) can be operated easily, and has a strong ability to suppress different interfere.NMT monitor, employing the technology of virtual instrument in its design, can sufficiently utilize the strong function of PC in processing the collected data and inspecting the monitor's key parameters.LabVIEW is excellent software for developing virtual instrument. Its graphical programming, abundant functions and effective debug measures greatly improve the efficiency of designing equipments.LabVIEW shows us a brand-new concept: "software is instrument".