PTU - Polskie Towarzystwo Urologiczne
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VISUAL LASER ABLATION OF THE PROSTATE ? FOUR YEARS OF EXPERIENCE
Article published in Urologia Polska 1998/51/2.

authors

Wojciech Pypno, Wojciech Husiatyński
Klinika Urologii CMKP w Warszawie
Kierownik Kliniki: prof. dr hab. med. M. Kazoń

keywords

prostate benign prostatic hyperplasia treatment transurethral laser ablation

summary

Objective. The estimate of efficacy and the risk of visual laser ablation of
the prostate (VLAP). Indication for this procedure and choice of the best
techni±ue was done.
Patients and methods. We have treated 140 patients with Symptomatic
benign prostatic hyperplasia (BPH). Laser Nd:YAG with power 40 W was
applied. The ±uantity of energy supplied to tissue depended on largeness of
the prostate and carred out 850-900 J/cm3. Contact and non-contact techni±ue
was performed in all patients. In some cases excision of prostate was done.
Before and after treating IPSS, ±uality of life, maximum flow rate and residual
urine was evaluated. Average follow-up was 23 months.
Results. All evaluated parameters were influenced after treatment (p < 0.05)
and be continued on the same level (p > 0.05). IPSS decreased from 22.6 to
5.4-5.7 points, maximum flow rate increased from 4.4 to 14.1-14.7 ml/sec,
residual urine decreased from 203.7 to 40 ml. The volume of the prostate
decreased from 61.3 to 49.1 cm3 (p < 0.05). 18 patients (13%) re±uired the
operation during observation, in further 22 (15.7%) the improvement was
insatisfactory.
Conclusion. In above 70% patients the satisfactory and essential
improvement was obtained; visual laser ablation is less effective procedure
than standard transurethral resection (TURP). This is very save method even
to use high energy doses.

references

  1. [1] Anson, K., Nawrocki, ]., Buckley, ]., Fowler, C, Kirby, R., Lawrence, W.,
  2. Paterson, P, Watson, G.: A multicenter, randomized, prospective study of endo-
  3. scopic laser ablation versus transurethral resection of the prostate. Urology 1995,46,
  4. 305-310.
  5. [2] Bolton, D. M., Costello, A. J.: Histological study ofNd:YAG laser energy on
  6. prostatic adenoma as demonstrated in the intact prostate gland. Br. J. Urol. 1993,
  7. 71, 757-759.
  8. [3] Costello, A. J., Bolton, D. M., Ellis, D., Crowe, H.: Histopathological changes
  9. in human prostatic adenoma following neodymium:YAG laser ablation therapy.
  10. J. Urol. 1994,152,1526-1529.
  11. [4] Costello, A. ]., Lusaya, D. G., Crowe, H. R.: Transurethral laser ablation of the
  12. prostate; long-term results. World J. Urol. 1995,13,119-122.
  13. [5] Cromeens, D. M., Price, R. E., Johnson, D. E.: Pathologic changes following
  14. transurethral canine prostatectomy with a cylindrically diffusing fiber. Lasers
  15. Surg. Med. 1994, 14, 306-313.
  16. [6] Fournier, G. R. Jr., Narayan, P.: Factors affecting size and configuration of
  17. neodymium:YAG (Nd:YAG) laser lesions in the prostate. Lasers Surg. Med. 1994,
  18. 14, 314-322.
  19. [7] Gomella, L. G., Lotfi, M. A., Rivas, D. A., Chancellor, M. B.: Contactlaser
  20. vaporization techni±ues for benign prostatic hyperplasia.J. Endourol. 1995,9,117-
  21. -123.
  22. [8] Hashmat, A. 1., Hakim, L. S.: Antegrade eiaculation following transurethral
  23. laser ablation of the prostate. J. Androl. 1994,15 (supl.), 28-30.
  24. [9] Kabalin, J. N.: Laser prostatectomy is a safer, better operation than electnwaporiza-
  25. tion of the prostate. Urology 1997,49,160-165.
  26. [10] Kabalin, J. N.: Urolase laser prostatectomy. 1993 Monographs in urology, 1993,
  27. 14, 23-36.
  28. [11] Kaplan, S. A.: Electrovaporization of the prostate: durable modality or passing
  29. fad? Urology 1997, 49,157-159.
  30. [12] Narayan, P, Fournier, G., Indudhara, R., Leidich, R., Shinohara, K.,
  31. Ingerman, A.: Transurethral evaporation of prostate (TUEP) with Nd:YAG laser
  32. using a contact free beam techni±ue: results in 61 patients with benign prostatic hy-
  33. perplasia. Urology 1994, 43, 813-820.
  34. [13] Orihuela, E., Motamedi, M., Cammack, T., Torres, J. H., Pow-Sang, M.,
  35. Lahaye, M., Cowan, D. F., Warren, M. M.: Comparison of thermocoagulation
  36. effects of low power, slow heating versus high power, rapid heating Nd:YAG laser
  37. regimens in a canine prostate model. J. Urol. 1995,153,196-200.
  38. [14] Pypno, W., Husiatyński, W.: Zarys klinicznych zastosowań laserów. Dom Wy-
  39. dawniczy ?Ankar", Warszawa 1995, 268-270.
  40. [15] Pypno, W., Husiatyński, W .-.Przezcewkowa laserowa ablacja stercza. Urol. Pol.
  41. 1996, 49, 48-52.
  42. [16] Pypno, W., Husiatyński, W., Kazoń, M.: Przezcewkowa koagulacja laserowa
  43. stercza (doniesienie wstępne). Urol. Pol. 1993,46,305-308.
  44. [17] Shanberg, A. M., Lee, I. S., Tansey, L. A., Sawyer, D. E., Rodgers, L. W.,
  45. Ahlering, T.: Depth of penetration of the neodymium: yttrium-aluminum-garnet
  46. laser in the human prostate at various dosimetry. Urology 1994, 43, 809-
  47. -812.
  48. [18] Watson, G.: Contact laser prostatectomy. World J. Urol. 1995,13,115-118.