title: Comparison of the microvessel diameter of hyperplastic prostate and the coagulation depth achieved with mono- and bipolar transurethral resection of the prostate. A pilot study on hemostatic capability.
abstract: OBJECTIVE
  To investigate the hemostatic capability of mono- and bipolar transurethral resection of the prostate (TURP) by comparing the microvessel diameter of hyperplastic prostate with the coagulation depth achieved with mono- and bipolar TURP.
  
  
  METHODS
  The microvessel diameters of 22 hyperplastic prostate tissues obtained from open surgery were measured using a microscope. Thirty prostatic chips harvested from monopolar TURP and 30 from bipolar TURP were sectioned, stained with hematoxylin-eosin and the coagulation depth measured using a microscope.
  
  
  RESULTS
  The minimum, maximum and mean diameters of hyperplastic prostates were 6.33, 139.04 and 21.19+/-12.80 microm, respectively. The coagulation depths with mono- and bipolar TURP were 122.54+/-22.22 and 141.35+/-24.27 microm, respectively (p<0.01). The coagulation depths with mono- and bipolar TURP were significantly greater than the mean diameter of microvessels. However, the mean coagulation depth with monopolar TURP was smaller than the maximum diameter of microvessels, whereas the coagulation depth with bipolar TURP was bigger than that.
  
  
  CONCLUSIONS
  The coagulation depths with mono- and bipolar TURP were bigger than the mean diameter of prostatic microvessels. However, the mean coagulation depth with bipolar TURP was bigger than the maximum microvessel diameter, which indicates that the hemostatic capability of bipolar TURP may be better than that of monopolar TURP.
authors.affiliation: Department of Urology, Guangdong Provincial People's Hospital, Guangzhou, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Huang
authors.forename: Xing-Huan
authors.initials: XH
authors.lastname: Wang
authors.forename: Huai-Peng
authors.initials: HP
authors.lastname: Wang
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Qu
mesh_terms: D000328:Adult; D006488:Hemostasis, Surgical; D006801:Humans; D008297:Male; D010865:Pilot Projects; D011467:Prostate / Q000098:blood supply; D011470:Prostatic Hyperplasia / Q000473:pathology / Q000601:surgery*; D020728:Transurethral Resection of Prostate / Q000379:methods*