title: Properties in penetrating capsula of transurethral plasmakinetic resection: comparison with transurethral resection of the prostate in an ex vivo study.
abstract: OBJECTIVE
  As capsular perforation is still regarded as one of complications of transurethral prostatectomy, the aim of this study was to compare the properties in penetrating capsular tissue of transurethral plasmakinetic resection (PKRP) and transurethral resection of the prostate (TURP).
  
  
  METHODS
  Isolated normal saline-perfused porcine kidneys were used to determine the penetrating capsule properties of PKRP and TURP. We quantified and compared the time of cutting through renal surface during different procedures.
  
  
  RESULTS
  The time of perforating renal capsula induced by PKRP was longer than that by TURP (p < 0.05). As soon as the operator activated footswitch, the renal capsula was cut through by the monopolar loop. The duration was always less than 1 s in the TURP group, although sometimes the plasma-loop could not penetrate the velamen (15/40). The time of penetrating the renal surface with capsula induced by PKRP was longer than that without capsula (p < 0.05). The duration of penetrating the surface without capsula was always less than 1 s.
  
  
  CONCLUSIONS
  With the present ex vivo model, we provided evidence that it is more difficult to penetrate capsular tissue with PKRP compared to TURP.
authors.affiliation: Department of Urology, First Affiliated Hospital of Jinan University, Guangzhou, China.
authors.forename: Lijun
authors.initials: L
authors.lastname: Qu
authors.forename: Xinghuan
authors.initials: X
authors.lastname: Wang
authors.forename: Huaipeng
authors.initials: H
authors.lastname: Wang
authors.forename: Xing
authors.initials: X
authors.lastname: Huang
mesh_terms: D000818:Animals; D004598:Electrosurgery / Q000009:adverse effects / Q000295:instrumentation; D004867:Equipment Design; D007668:Kidney / Q000601:surgery*; D008297:Male; D023421:Models, Animal; D013552:Swine; D013997:Time Factors; D020728:Transurethral Resection of Prostate / Q000009:adverse effects; D014835:Volatilization