title: Short term outcomes of GreenLight vapor incision technique (VIT) of the prostate: comparison of outcomes to standard GreenLight 120W HPS vaporization in prostate volumes greater than 80 cc.
abstract: BACKGROUND
  To evaluate a hybrid technique involving GreenLight 120W HPS vapor incision tissue removal in prostate glands > 80 cc.
  
  
  METHODS
  Vapor incision technique (VIT) was performed in 25 consecutive men with a prostate > 80 cc by a single surgeon from May 2010 until September 2010.  VIT involved adenoma incisions at 5 and 7-o'clock positions followed by 3, 9 and 12 o'clock down to the surgical capsule.  Side-fire vaporization along the capsule excised transurethral resection of the prostate (TURP) like tissue strips for later retrieval.  Functional evaluations were performed at 1 and 3 months.  Outcomes and complications were compared retrospectively to baseline and a size matched- cohort of 25 men who previously underwent standard vaporization-only photoselective vaporization prostatectomy (PVP).
  
  
  RESULTS
  The VIT and control subgroups were comparable.  Mean laser time, operative time and energy usage were reduced in the VIT group compared to controls (35 min versus 48 min; 63 min versus 80 min; and 227 k versus 325 kJ respectively; all p < 0.05).  At 3 months the VIT subgroup demonstrated improved Qmax and post void residual (PVR) (197% versus 173%, 88% versus 72%; all p < 0.05) compared to control.  VIT showed a 68% reduction in mean preoperative PSA at 3 months compared to 50% for the control group (p<0.01). Hospital stay, catheterization time and complication rates were comparable.
  
  
  CONCLUSIONS
  Our data demonstrates that VIT provides superior short term outcomes to standard HPS-PVP in men with prostate volumes > 80 cc.  VIT appears to be more time-efficient, consumes less energy and obtains tissue for pathological evaluation.  Further follow up is required to assess the durability of GreenLight HPS-VIT to PVP vaporization-only for large prostate glands.
authors: Section of Urology, Department of surgery, University of Montreal Health Center, Montreal, Quebec, Canada.
authors: Tal
authors: T
authors: Ben-Zvi
authors: Pierre-Alain
authors: PA
authors: Hueber
authors: Firas
authors: F
authors: Abdollah
authors: Daniel
authors: D
authors: Liberman
authors: Naeem
authors: N
authors: Bhojani
authors: Gagan
authors: G
authors: Gautam
authors: Kevin C
authors: KC
authors: Zorn
mesh_terms: D000368:Aged; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D008297:Male; D061646:Operative Time; D011468:Prostatectomy / Q000379:methods*; D011470:Prostatic Hyperplasia / Q000150:complications / Q000473:pathology / Q000601:surgery*; D053448:Prostatism / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D020127:Recovery of Function