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KMID : 0191120090240061187
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Journal of Korean Medical Science
2009 Volume.24 No. 6 p.1187 ~ p.1191
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The One Year Outcome after KTP Laser Vaporization of the Prostate According to the Calculated Vaporized Volume
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Ku Ja-Hyeon
Cho Jeong-Yeon
Cho Sung-Yong
Kim Soo-Woong
Paick Jae-Seung
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Abstract
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The aim of this study was to develop a new simple method for measuring the vaporized volume and to evaluate the outcome of high-power potassium-titanyl-phosphate (KTP) photoselective laser vaporization. A total of 65 patients, with a mean age of 67.7 yr (range 53 to 85), were included in the primary analysis. The vaporized volume was calculated as the pre-operative volume minus the immediate post-operative volume plus the volume of the defect. For all patients, the subjective and objective parameters improved significantly after surgery. Six and 12 months after surgery, the group with a smaller vaporized volume (<15 g) had a lower reduction of the mean International Prostate Symptom Score (P=0.006 and P=0.004) and quality of life index (P=0.006 and P=0.004) when compared to the group with a greater vaporized volume (≥15 g). There were no differences in the change of the maximum flow rate and post-void residual based on the vaporized volume. Our findings suggest that the subjective improvement, after a high-power KTP laser vaporization, may be dependent on the vaporized volume obtained after the procedure.
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KEYWORD
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Prostate, Prostatic Hyperplasia, Vaporization, Laser Therapy
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