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  • Key words: Carbon dioxide laser  (1)
  • Key words: Laparoscopy — Three-dimensional laparoscopy  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of gynecology and obstetrics 259 (1996), S. 25-35 
    ISSN: 1432-0711
    Keywords: Key words: Carbon dioxide laser ; Condylomata acuminata ; Human papillomavirus ; SwiftLase® ; Vulvar intraepithelial neoplasia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract. The CO2-laser has a successful record in treatment of extensive, refractory vulvar condylomas and vulvar intraepithelial neoplasia. A prerequisite for optimal use of the laser is careful preoperative diagnosis and optimized surgical technique based upon the exact knowledge of the interaction process between laser radiation and tissue. Using a new CO2-laser scanning device, the Sharplan SwiftLase®, this in-vivo study analyses the effects of CO2-laser parameters [average power density (PD), beam size and exposure time] on vulvar skin to determine optimum laser settings. Our histomorphometric analyses reveal a minimal skin destruction (ablation depth 40 µm, extent of irreversible thermal damage 80 µm to 120 µm) after application of the CO2-laser energy with the SwiftLase® using a PD of 1000 W/cm2 with a beam size of 1 mm diameter. Previous CO2-laser application techniques required low PD (200 W/cm2 to 750 W/cm2) and a larger beam size (1.5 mm to 2 mm) moving over the epithelial surface as fast as possible to obtain a precise skin destruction. The SwiftLase® allows the laser beam to be moved slowly with a beam size of 1 mm and significantly higher PD (up to 5000 W/cm2). These advantageous application conditions guarantee precise, homogeneous vulvar skin treatments with minimal thermal damage to the surrounding normal skin. The SwiftLase® enables a less experienced colposcopists to perform vulvar CO2-laser surgery.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical endoscopy and other interventional techniques 13 (1999), S. 469-472 
    ISSN: 1432-2218
    Keywords: Key words: Laparoscopy — Three-dimensional laparoscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: This study was designed to compare conventional laparoscopy with three-dimensional (3-D) laparoscopy. Method: Thirty candidates, 20 inexperienced and 10 experienced in operative laparoscopy, executed standardized exercises on a pelvitrainer. The candidates were randomized to two groups. Group A executed the exercises first with the conventional and then with the three-dimensional system. Group B accomplished the exercises in the reverse sequence. At the end of the exercises, the candidates answered specific questions about the two systems. Results: A total of 21 h 6 min 6 sec of laparoscopic exercises were analyzed—10 h 8 min 1 sec with the conventional and 10 h 58 min 5 sec with the three-dimensional system (p= 0.38). Group A required 12 h 26 min 56 sec to perform all the exercises. There was no statistically significant difference from group B, where the candidates needed 8 h 39 min 10 sec (p= 0.14). Neither were there any differences in the number of failed attempts between the two groups. There were also no statistical difference when the results obtained from the candidates without experience in laparoscopy and the participants experienced in operative laparoscopy were analyzed separately. Both the inexperienced and the experienced candidates became tired earlier, had more headaches, and needed extra time to adapt to the 3-D system. Conclusion: When analyzed in a standardized fashion, 3-D laparoscopy does not have any significant advantages over conventional laparoscopy.
    Type of Medium: Electronic Resource
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