Urology · 2017
Dietary Sodium Restriction Reduces Nocturnal Urine Volume and Nocturnal Polyuria Index in Renal Allograft Recipients With Nocturnal Polyuria.
Clinical StudyСтатьяНазвание и аннотация: Перевод в очереди
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Okumura Yoshinaga, Asai Kanae, Kobayashi Takashi, Miyata Hitomi, Tanaka Yukari, Okada Yoshiyuki, Sakai Kaoru, Kamba Tomomi, Tsuji Hidemi, Shide Kenichiro, Nagashima Kazuaki, Yanagita Motoko, Inagaki Nobuya, Ogawa Osamu, Negoro Hiromitsu
Аннотация
OBJECTIVE: To investigate whether sodium restriction alters the nocturnal urine volume (NUV) and the ratio of NUV to 24-hour urine of renal allograft recipients (RARs).
MATERIALS AND METHODS: This prospective, single-center study analyzed 38 of the 59 RARs who were followed up for more than 6 months in our hospital. All patients underwent 3 sessions of dietary counseling performed by a board-certified dietitian. Before and after these 3 sessions, 24-hour urine samples were collected, along with voiding frequency volume charts.
RESULTS: Of the 38 included RARs, 23 (60.5%) were diagnosed as having nocturnal polyuria (NP, NUV >10 mL/kg). After counseling the RARs with NP, their 24-hour sodium excretion was reduced from 169.5 to 125.6 mEq (P = .0066), their NUV from 862 to 709 mL (P = .021), and the ratio of NUV to 24-hour urine volume from 38.9% to 33.0% (P = .023). In contrast, these parameters were not significantly changed by dietary counseling in RARs without NP. Reduced sodium excretion and decreased NUV were significantly correlated (Spearman rho = 0.45, P = .005).
CONCLUSION: Excess intake of sodium is considered a cause of NP in RARs. Dietary counseling on sodium restriction is effective in reducing NUV in RARs. Prospective studies are needed to evaluate the general population with NP.
MATERIALS AND METHODS: This prospective, single-center study analyzed 38 of the 59 RARs who were followed up for more than 6 months in our hospital. All patients underwent 3 sessions of dietary counseling performed by a board-certified dietitian. Before and after these 3 sessions, 24-hour urine samples were collected, along with voiding frequency volume charts.
RESULTS: Of the 38 included RARs, 23 (60.5%) were diagnosed as having nocturnal polyuria (NP, NUV >10 mL/kg). After counseling the RARs with NP, their 24-hour sodium excretion was reduced from 169.5 to 125.6 mEq (P = .0066), their NUV from 862 to 709 mL (P = .021), and the ratio of NUV to 24-hour urine volume from 38.9% to 33.0% (P = .023). In contrast, these parameters were not significantly changed by dietary counseling in RARs without NP. Reduced sodium excretion and decreased NUV were significantly correlated (Spearman rho = 0.45, P = .005).
CONCLUSION: Excess intake of sodium is considered a cause of NP in RARs. Dietary counseling on sodium restriction is effective in reducing NUV in RARs. Prospective studies are needed to evaluate the general population with NP.