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Background To investigate and analyze the prevalence of somatic symptom disorder in elderly patients with essential hypertension in community hospitals. Methods A total of 5,473 patients in 100 community hospitals in Shanghai from January to June 2019 were enrolled in the cross-sectional study. Among them, 3,080 patients were diagnosed with essential hypertension and 2,393 patients without essential hypertension. The corresponding clinical data were collected and the somatic symptom self-rating scale was used to evaluate these patients. Results The prevalence of somatic symptom disorder in elderly patients with essential hypertension was higher than those without essential hypertension (45.3% vs. 31.8%, P < 0.01), and the score of somatic symptom self-rating scale was higher than patients without essential hypertension (34.3 ± 8.5 vs. 32.9 ± 8.1, P < 0.01). In elderly patients with essential hypertension, concentration difficulties (72.5% vs. 69.6%, P = 0.021), fatigue (65.6% vs. 60.2%, P < 0.01), dizziness and headache (62.6% vs. 53.3%, P < 0.01), and other somatic symptoms were higher than patients without essential hypertension. Conclusions The prevalence and severity of somatic symptom disorder in elderly patients with essential hypertension are higher than those without essential hypertension. [ABSTRACT FROM AUTHOR]

In this work, a portable slit imaging system is developed to study both the electron beam diameter and the profile of the newly developed Shanghai Electron Beam Ion Trap (Shanghai EBIT). Images are detected by a charge coupled device (CCD) sensitive to both X rays and longer wavelength photons (up to visible). Large scale ray tracings were conducted for correcting the image broadening effects caused by the finite slit width and the finite width of the CCD pixels. A numerical de-convolution method was developed to analyse and reconstruct the electron beam density distribution in the EBIT. As an example of the measured beam diameter and current density, the FWHM (full width at half maximum) diameter of the electron beam at 81 keV and 120 mA is found to be 76.2 um and the density 2.00 x 103 A*cm[?]2, under a magnetic field of 3 T, including all corrections. [ABSTRACT FROM AUTHOR]