CODE: 6.4 - 3 years of experience in BPH treatment by photoselective vaporisation of the prostate (PVP) with green laser (KTP)
Article published in Urologia Polska 2006/59/Suplement 1.

authors

Marek Lipiński, Leszek Jeromin

II Klinika Urologii Uniwersytetu Medycznego w Łodzi

summary

Introduction. The potassium titanyl phosphate (KTP) laser, new tool for BPH treatment, has been found to vaporise tissue with minimal coagulation of the underlying structures.

Objectives. The aim of the study was to establish value of KTP laser in the treatment of BPH.

Materials and methods. From August 2003 to december 2005, a group of 144 men (51 to 84 years old) were treated with PVP method by Niagara KTP Laser 532 nm, 80 wat. Preoperative prostate volume ranged from 31 to 136 cc. I-PSS and Qol estimated before the treatment exceeded in all patients 21 and 3 points respectively. Qmax ranged from 5.2 ml/sec to 14.1 ml/sec. PSA was lower then 4 ng/ml in 132 pts and in 12 ranged from 4 to 10 ng/ml.

Results. The mean operation time was 27 minutes (11 to 45 minutes). One patient required catheterization after PVP. 2 were catheterised in the first day after PVP. In 2 increase of body temperature to 38oC was observed in the first day after treatment. 24 hours after treatment haematuria which necessitated catheterisation was observed in one patient. 7 days after treatment in 4 pts massive haematuria was observed (2 were hospitalised). All pts experienced few days of mild dysuria. In 4 pts because of urinary retention TURP was performed (in one 4 weeks after PVP and in three 8 weeks after). In one patient 24 weeks after PVP incision of urethral stricture was performed. 4 weeks after PVP I-PSS decreased of 4 points, 12 weeks after of 9 and 52 week of 12 points. QoL were estimated in 140 pts and was less then 3 after 4 weeks. Qmax increased after 4 weeks to 16.8 ml/sec and after 12 weeks to 18.9 ml/sec.

Conclusions. In 97.2% of treated by PVP patients I-PSS and QoL decreased after 4 weeks. Significant increase of Qmax was observed in pts after 4 weeks from PVP. In 93.75 % of pts no sings of bacteriuria were observed. In pts with prostate volume over 120 cc haematuria and incidents of urinary retention which caused TURP were observed.