title: Efficacy of parenchymal compression in open partial nephrectomies: a comparison with conventional vascular clamping.
abstract: OBJECTIVE
  We evaluated the efficacy of parenchymal compression in open partial nephrectomies (OPNs) compared with that of the conventional vascular clamping method.
  
  
  METHODS
  OPNs were conducted by means of the parenchymal compression technique at our institution from April 2006. Among these, the operative outcomes of 20 consecutive patients with normal preoperative renal function (Group 1) were matched with those of 20 control patients from the database of previous operations who underwent OPN with a conventional vascular clamping method (Group 2).
  
  
  RESULTS
  All preoperative characteristics were similar in both groups. The operative time was significantly higher for Group 2 (132.4+/-17.7 vs. 151.4+/-21.4 minutes, p=0.031). Estimated blood loss was slightly higher for Group 2, with marginal statistical significance (173.7+/-11.5 vs. 211.2+/-43.8 ml, p=0.06). Histologic examination revealed that over 80% of the tumors in both groups were renal cell carcinomas. For all patients, the pathology results of specimens were negative. Serum creatinine, checked at 1, 3, and 7 days after the operation, was significantly increased in both groups to a similar degree. However, 30 days after surgery, the patterns of serial serum creatinine levels demonstrated statistically significant differences by repeated-measures ANOVA (p<0.001), with a trend of more elevated in Group 2 than in Group 1, although values were within the normal range. No major complications occurred in either group.
  
  
  CONCLUSIONS
  OPN using the parenchymal compression method had acceptable outcomes in terms of complete tumor control, avoiding warm ischemic time, and minimizing blooding, with good preservation of renal function and minimal complications.
authors.affiliation: Department of Urology, Korea University School of Medicine, Seoul, Korea.
authors.forename: Young Hwii
authors.initials: YH
authors.lastname: Ko
authors.forename: Hoon
authors.initials: H
authors.lastname: Choi
authors.forename: Sung Gu
authors.initials: SG
authors.lastname: Kang
authors.forename: Seok Ho
authors.initials: SH
authors.lastname: Kang
authors.forename: Hong Seok
authors.initials: HS
authors.lastname: Park
authors.forename: Jun
authors.initials: J
authors.lastname: Cheon
authors.forename: Jeong Gu
authors.initials: JG
authors.lastname: Lee
authors.forename: Je Jong
authors.initials: JJ
authors.lastname: Kim
authors.forename: Duck Ki
authors.initials: DK
authors.lastname: Yoon