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Objective To investigate the hemostatic effect of transanal prostatic resectoscope technology on massive rectal bleeding after transrectal prostate biopsy. Methods From May 2016 to March 2022, 483 patients underwent transrectal prostate biopsy, 5 patients of them had hemodynamic deterioration due to massive rectal bleeding within 3 to 8 hours after operation. After active rehydration and blood transfusion, transanal prostatic resectoscope technology was applied to check the biopsy region and coagulate the active bleeding point. After hemostasis, the anal tube was retained for drainage for 24 to 72 hours and then removed. Results The average bleeding volume was about 440 mL (400 mL -1 000 mL) ; Average blood transfusion volume; RBC 2. 0 U/case, homoplasma 520 mL/case; The average operation time was 25 minutes (20-30 minutes) ; Rebleeding, local infection, hyponatremia and hypokalemia was not observed; The mean hospital stay was 4. 5 days (3-7 days) . Conclusion Transanal prostatic resectoscope technology is an effective method for rapid control of massive rectal bleeding after transrectal prostate biopsy. This method has obvious advantages in direct vision, clea vision, visible bleeding point, accurate and reliable hemostasis. [ABSTRACT FROM AUTHOR]

In the past years, comprehensive attention has been paid on the monolithic materials for high performance liquid chromatography ( HPLC ) and capillary electrochromatography ( CEC) , due to their superior porosity, good permeability, large surface area and high diffusion mass transfer. They are well suited for both small molecules and large biopolymers. Monolithic polymer based stationary phases are the continuous unitary porous structure prepared by in situ polymerization inside the column tube and, if necessary, the surface can be functionalized with various functional groups. This review summarizes the development in preparation and application of polymer monoliths, mainly according to the literature published from 2003 to 2006.