The aim of this study was to evaluate the clinical efficacy of early enteral nutrition support (EENS) on nitrogen balance and National Institute of Health stroke scale (NIHSS) in elderly patients with acute cerebral stroke and dysphagia. Sixty-eight patients diagnosed with acute brain stroke (ABS) were retrospectively analyzed in our hospital database. Of the included 68 ABS subjects, 37 patients were given early EENS within 72h after ABS diagnosis (experiment group) and the other 31 cases were given a regular liquid diet (control group). The nitrogen balance 1, 2, 3 and 4 weeks after EENS were -4.3 ± 1.3, -3.4 ± 1.1, -2.6 ± 1.2 and -2.0 ± 1.1(g/d) respectively for the experiment group and -8.5 ± 3.1, -7.0 ± 2.4, -6.2 ± 1.5 and -5.7 ± 1.1 (g/d) respectively for the control group. This indicated that the nitrogen balance in the experimental group was significantly higher than that of the control group (p<0.05). After treatment, the NIHSS score were 7.3 ± 2.3 and 7.4 ± 2.4 in the experimental and control groups respectively with statistically significant difference (p<0.05). The risk of developing regurgitation, diarrhea and ventosity in the experimental group were significantly lower than that of the control group (p<0.05). EENS can quickly improve the burden of ABS in elderly patients, elevate the nutritional level and reduce the risk of related complications.

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This project tries to design a wireless intelligent pH sensor to monitor the pH value of nutrient solution in real time by using the analog front circuit LMP91200, microprocessor STM32F103c8t6 and WiFi module.The experiment shows : this equipment has a high accuracy, can be 0.01; it can access business cloud services platform to achieve the functions like accurate acquisition and calibration of pH value, Interactive with cloud platform through WiFi Networks; APP and PC for the remote measurement is stable, after 12 hours of testing there is no packet loss phenomenon;Because of high uploading speed, in 5 seconds it can complete the device networking and upload, besides, the cloud services have changed the traditional way of nutrient solution measurement.