Abstract
To develop a portable dynamic bladder pressure monitoring device for facilitating the monitoring of bladder detrusor pressure in patients with neurogenic bladder (NB) caused by spinal cord injury and further compared the effect with traditional urodynamics devices. Portable dynamic bladder pressure monitoring device was implemented by software and hardware. The hardware was mainly composed of seven parts, such as micro liquid pressure sensor, electric bridge amplifying circuit, clock module, SD card storage circuit, liquid crystal display circuit, touch circuit, controller circuit and so on. The main program of the software included system initialization, data acquisition, storage, display, alarm, etc. A total of 45 patients with neurogenic bladder caused by spinal cord injury were enrolled in the study. Detrusor pressure was measured with the portable device and traditional urodynamics device. The test-retest reliability of the portable device was modest in two times test (intra-class correlation coefficient (ICC) = 0.852), no significant difference was found in the results of volume perfusion evaluation between our device and conventional urodynamic (each P > 0.05). The portable dynamic bladder pressure monitoring device is conducive to the dynamic monitoring of bladder pressure in patients with neurogenic bladder caused by spinal cord injury.
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