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The KTP-(greenlight-) laser--principles and experiences.

Alexander Bachmann1, Robin Ruszat

  • 1Department of Urology, University Hospital Basel, Basel, Switzerland. bachmanna@uhbs.ch

Minimally Invasive Therapy & Allied Technologies : MITAT : Official Journal of the Society for Minimally Invasive Therapy
|March 17, 2007
PubMed
Summary

The KTP laser offers efficient prostate tissue ablation for transurethral prostatectomy. This advanced laser technology provides effective treatment with fewer complications than traditional methods.

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Area of Science:

  • Urology
  • Laser Technology
  • Surgical Innovation

Background:

  • Transurethral prostatectomy traditionally uses methods like TURP.
  • Earlier laser technologies (Nd:YAG) had limitations, including significant tissue necrosis and prolonged irritative symptoms.
  • The KTP laser represents a significant advancement in laser technology for prostate surgery.

Purpose of the Study:

  • To evaluate the efficacy and safety of the KTP laser for transurethral prostatectomy.
  • To compare KTP laser outcomes with conventional TURP and older laser techniques.
  • To highlight the advantages of KTP laser's specific tissue interaction.

Main Methods:

  • Utilizes a potassium-titanyl-phosphate (KTP) crystal to double the frequency of Nd:YAG laser energy to 532 nm.

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  • Leverages selective absorption of green light by hemoglobin, minimizing water absorption.
  • Achieves superficial tissue ablation with minimal penetration (0.8 mm) due to rapid hemostasis.

    • Main Results:

    • KTP laser provides immediate and efficient tissue vaporization and ablation.
    • Superficial coagulation prevents deep necrosis, reducing long-term irritative symptoms.
    • Initial studies with 60W and 80W KTP systems show comparable efficacy to TURP with lower complication rates.

    Conclusions:

    • The KTP laser offers an effective and safer alternative for transurethral prostatectomy.
    • Advancements to 80W and 120W systems promise increased speed and power for prostate vaporization.
    • This technology minimizes complications associated with traditional prostatectomy methods.