Objective: To evaluate and compare tissue penetration depths of monopolar TURP, bipo-lar TURP and 120 W Lithium triborate (LBO) laser in human prostatic tissue.
Materials and Methods: 39 patients sche-duled for transurethral prostatectomy were di-vided to 3 groups, nonrandomly. In monopolar group (group-1) and bipolar group (group-2) prostate was resected by electrocautery and co-agulation was applied for 1sec and 2sec. Resec-ted tissue samples were examined histopatholo-gically. In group-3, following prostate vaporisa-tion and coagulation by 120 W Lithium tribo-rate (LBO) laser, TUR were performed for tis-sue sampling and histopathologic examinati-on. Composed coagulation zones were detected and compared.
Results: Resection groups, mean values than the other groups, 1 second and 2 seconds after the process of coagulation coagulation zo-nes were compared in all groups formed by the LBO laser coagulation, monopolar and bipo-lar TURP zone depths were found to be statis-tically significantly higher. The difference bet-ween monopolar and bipolar TURP groups was not statitistically significant (p>0.05).
Conclusion: Termal injury in the surroun-ding tissue generated by 120 W Lithium tribo-rate (LBO) laser reached to deeper layers com-pared with termal injury of monopolar and bi-polar TURP. This effect may obtain better ho-meostasis, visualization and lesser blood loss nevertheless periprostatic structures may be negatively affected. These effects should be evaluated with better histologic identificati-ons and there is need for advanced studies evaluating erectile func-tions objectively.
Key Words: bipolar cautery, BPH, 120 W Lithium tribora-te (LBO) laser, monopolar cautery, transurethral prostatic surgery.
Abstract
Objective: To evaluate and compare tissue penetration depths of monopolar TURP, bipo-lar TURP and 120 W Lithium triborate (LBO) laser in human prostatic tissue.
Materials and Methods: 39 patients sche-duled for transurethral prostatectomy were di-vided to 3 groups, nonrandomly. In monopolar group (group-1) and bipolar group (group-2) prostate was resected by electrocautery and co-agulation was applied for 1sec and 2sec. Resec-ted tissue samples were examined histopatholo-gically. In group-3, following prostate vaporisa-tion and coagulation by 120 W Lithium tribo-rate (LBO) laser, TUR were performed for tis-sue sampling and histopathologic examinati-on. Composed coagulation zones were detected and compared.
Results: Resection groups, mean values than the other groups, 1 second and 2 seconds after the process of coagulation coagulation zo-nes were compared in all groups formed by the LBO laser coagulation, monopolar and bipo-lar TURP zone depths were found to be statis-tically significantly higher. The difference bet-ween monopolar and bipolar TURP groups was not statitistically significant (p>0.05).
Conclusion: Termal injury in the surroun-ding tissue generated by 120 W Lithium tribo-rate (LBO) laser reached to deeper layers com-pared with termal injury of monopolar and bi-polar TURP. This effect may obtain better ho-meostasis, visualization and lesser blood loss nevertheless periprostatic structures may be negatively affected. These effects should be evaluated with better histologic identificati-ons and there is need for advanced studies evaluating erectile func-tions objectively.
Key Words: bipolar cautery, BPH, 120 W Lithium tribora-te (LBO) laser, monopolar cautery, transurethral prostatic surgery.