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KMID : 0358320100510010030
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Korean Journal of Urology
2010 Volume.51 No. 1 p.30 ~ p.33
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Learning Curve for Robot-Assisted Laparoscopic Radical Prostatectomy for Pathologic T2 Disease
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Lee Jae-Won
Park Sung-Yul
Rha Koon-Ho
Oh Cheol-Kyu
Jeong Woo-Ju
Enrique I.S. Loreazo
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Abstract
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Purpose: To investigate the learning curve for robot-assisted laparoscopic radical prostatectomy (RALP) for pathologic T2 disease, we examined differences in perioperative outcomes according to time period.
Materials and Methods: Between July 2005 and June 2008, a total of 307 consecutive patients underwent RALP for prostate cancer and 205 patients had pathologic T2 disease. Patients were grouped into 6-month time periods. We collected and examined the patient’s perioperative data including age, body mass index (BMI), prostate-specific antigen (PSA), operation time, estimated blood loss, and positive surgical margin.
Results: There were no significant differences among the groups in age (p=0.705), BMI (p=0.246), PSA (p=0.425), or prostate volume (p=0.380). Operation time (p＜0.001) and estimated blood loss (p＜0.001) decreased significantly with time. The positive surgical margin rate also showed a decreasing trend, but this was not significant (p=0.680).
Conclusions: Operation time and estimated blood loss had a steep learning curve during the early 24 cases and then stabilized. A positive surgical margin rate, however, did not have a significant learning curve, although the positive surgical margin decreased continuously.
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KEYWORD
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Learning, Prostatectomy, Robotics, Laparoscopy, Prostatic neoplasms
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