Urology · 2014
Change of nocturnal polyuria after holmium laser enucleation of the prostate in patients with benign prostatic hyperplasia.
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Choi Woo Suk, Ku Ja Hyeon, Oh Seung-June, Kim Soo Woong, Paick Jae-Seung
Аннотация
OBJECTIVE: To evaluate changes of nocturnal polyuria (NP) after holmium laser enucleation of the prostate (HoLEP) in patients with nocturia preoperatively.
PATIENTS AND METHODS: This retrospective study included patients who underwent HoLEP for benign prostatic hyperplasia and recorded 3-day frequency-volume chart strictly. Patients who had a history of prostate cancer, sleep apnea, renal failure, heart failure, or medication of desmopressin were excluded. Nocturia is defined as ≥ 1 void at night, and NP is defined by nocturnal polyuria index (NPI) >33%. Among 472 patients included in the final analysis, 352 men (74.6%) presented nocturia preoperatively. Among those, 205 men (58.2%) who had NP preoperatively were allocated to group NP, and 147 men who did not were allocated to group non-NP.
RESULTS: In total patients, nocturnal frequency was decreased significantly starting from 3 months after the HoLEP. In NP group, mean value of NPI decreased by 4.1% ± 10.7%, 6.0% ± 9.4%, 6.2% ± 9.5%, and 4.8% ± 11.4% at postoperative months 1, 3, 6, and 12, respectively. The proportion of patients who showed decreased NPI to the normal range (≤ 33%) were 32.5%, 36.1%, 37.7%, and 31.0% at postoperative months 1, 3, 6, and 12, respectively. On receiver operating characteristics curve analysis, an absolute reduction of NPI of ≥ 6.0% was shown as a significant predictor for improved nocturia (≥ 50% reduction of nocturnal frequency).
CONCLUSION: In our study, the improvement of NP after HoLEP was observed. This suggests that relieving lower urinary tract obstruction has a positive influence on NP, and it could be a new strategy for treatment of NP.
PATIENTS AND METHODS: This retrospective study included patients who underwent HoLEP for benign prostatic hyperplasia and recorded 3-day frequency-volume chart strictly. Patients who had a history of prostate cancer, sleep apnea, renal failure, heart failure, or medication of desmopressin were excluded. Nocturia is defined as ≥ 1 void at night, and NP is defined by nocturnal polyuria index (NPI) >33%. Among 472 patients included in the final analysis, 352 men (74.6%) presented nocturia preoperatively. Among those, 205 men (58.2%) who had NP preoperatively were allocated to group NP, and 147 men who did not were allocated to group non-NP.
RESULTS: In total patients, nocturnal frequency was decreased significantly starting from 3 months after the HoLEP. In NP group, mean value of NPI decreased by 4.1% ± 10.7%, 6.0% ± 9.4%, 6.2% ± 9.5%, and 4.8% ± 11.4% at postoperative months 1, 3, 6, and 12, respectively. The proportion of patients who showed decreased NPI to the normal range (≤ 33%) were 32.5%, 36.1%, 37.7%, and 31.0% at postoperative months 1, 3, 6, and 12, respectively. On receiver operating characteristics curve analysis, an absolute reduction of NPI of ≥ 6.0% was shown as a significant predictor for improved nocturia (≥ 50% reduction of nocturnal frequency).
CONCLUSION: In our study, the improvement of NP after HoLEP was observed. This suggests that relieving lower urinary tract obstruction has a positive influence on NP, and it could be a new strategy for treatment of NP.