Journals / Tıp Araştırmaları Dergisi / 2010 / Cilt: 8 - Sayı: 3

Effects of lowering dialysate sodium in hemodialysis patients with hypertension

Hipertansiyonu olan hemodiyaliz hastalarında diyalizat sodyumunun düşürülmesinin etkileri

Pages
160–166
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

When the patients were given standard Na dialysate treatment again, this positive effect on BP was lasting despite increase of predialysis serum Na and IDWG.

📌 3 Key Takeaways

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Objective & Hypothesis:Objective: In a limited number of studies it has been shown that, lowering the level of dialysate sodium may decrease blood pressure.
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Key Findings & Data:In those cases with level of more than 137 mEq/L of predialysis plasma Na, a dialysate Na concentration of 137mEq/L was applied whereas those cases having predialysis plasma Na level approximating or lower than 137 mEq/L were given a dialysate Na concentration of 135mEq/L for 8 weeks.
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Conclusion & Impact:When the patients were given standard Na dialysate treatment again, this positive effect on BP was lasting despite increase of predialysis serum Na and IDWG.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Objective: In a limited number of studies it has been shown that, lowering the level of dialysate sodium may decrease blood pressure. In this study we investigated the effects of lower dialysate Na setups based on practical approaches in hemodialysis patients. Methods: Twenty-four hemodialysis patients were included in the study on a prospective, crossover and single blind basis. In those cases with level of more than 137 mEq/L of predialysis plasma Na, a dialysate Na concentration of 137mEq/L was applied whereas those cases having predialysis plasma Na level approximating or lower than 137 mEq/L were given a dialysate Na concentration of 135mEq/L for 8 weeks. The patients subsequently underwent a hemodialysis procedure with a standard 140 mEq/L dialysate Na for 4 weeks; clinical evaluations of the patients were then made with standard dialysate Na, lower dialysate Na and again standard Na during the last three-dialysis sessions. Results: The mean blood pressure was significantly lower with lower dialysate Na and after returning to standard dialysate Na when compared to basal level. Systolic BP, respectively, 181.4 ± 24.2, 148.5 ± 15.7 (p<0.001), 155.2 ± 16.7. (compared to basal p<0.001). Diastolic BP, respectively 103.2 ± 12.4 mmHg, 93.1 ± 10.3 mmHg (p <0.001) and 93.8. ± 7.2 (compared to basal p<0.001). Their interdialitic weight gain (IDWG) dropped after lower dialysate Na (2597.6 ± 673.3, 1756.8 ± 632.8 g. P<0.001), whereas it increased after standard Na treatment (2602.8 ± 807.5 g. P>0.1). Predialysis Na concentrations of the patients dropped when they were given treatment with lower dialysate Na (136.9 ± 1.5, 133.0 ± 2.1 mEq/L; P<0.001). After the treatment with standard dialysate Na, predialysis Na concentrations increased to 140.1 ± 2.9 mEq/L (compared t obasal p<0.001). Feeling for thirst decreased after treatment with lower dialysate Na. However, when the patients were treated with standard Na their feeling of thirst increased, no significant difference was observed compared with initial value. During the course of the study, no significant change was observed in the frequency of intradialytic hypotensive attacks. Conclusion: Lowering dialysate Na in hemodialysis patients according to predialysis Na concentrations decreased blood pressure, IDWG, and thirst. When the patients were given standard Na dialysate treatment again, this positive effect on BP was lasting despite increase of predialysis serum Na and IDWG.

Özet

Amaç: Hemodiyaliz hastalarında diyalizat sodyumunun azaltılmasının kan basıncını azaltabildiği sınırlı sayıda çalışmada gösterilmiştir. Bu çalışmada pratik bir şekilde düşük diyalizat Na’u kullanımının etkilerini araştırdık. Gereç ve Yöntem: Hemodiyalize giren 24 hasta tek kör ve çapraz geçişli düzenlemede prospektif olarak çalışmaya alındı. Diyaliz öncesi plazma Na konsantrasyonu >137mEq/L olan hastalara diyalizat Na konsantrasyonu 137mEq/L, diyaliz öncesi plazma Na konsantrasyonu ≤137mEq/L olan hastalara ise diyalizat Na konsantrasyonu 135mEq/L olacak şekilde sekiz hafta diyaliz uygulandı. Ardından hastalar dört hafta boyunca standart (140 mEq/L) diyalizat sodyumu ile diyalize alındılar. Hastalar başlangıçta, düşük Na diyalizat ile hemodiyaliz uygulanıyorken ve tekrar standart Na ile diyaliz uygulanırken son üç diyaliz seansında değerlendirildiler. Bulgular: Hastalara düşük diyalizat Na’u ile hemodiyaliz yapıldığında kan basınçları bazal düzeye göre anlamlı olarak azaldı. Normal sodyuma dönüldüğünde kan basıncı bir miktar artmasına karşı hala bazal değere göre düşüktü. Sistolik kan basıncı sırası ile 181.4 ± 24.2 mmHg, 148.5 ± 15.7 mmHg (p <0.001) ve sonra 155.2 ± 16.7 idi. (bazale göre p<0.001), Diastolik kan basıncı 103.2 ± 12.4 mmHg’den 93.1 ± 10.3 mmHg’ye düştü(p <0.001) ve 93.8. ± 7.2 oldu (bazale göre p<0.001). İnterdialitik kilo alım (İDKA)’ları düşük diyalizat sodyumuyla tedavi ile 2597.6 ± 673.3 gramdan 1756.8 ± 632.8 grama düştü(p<0.001) ve 2602.8 ±807.5 oldu. Hastalara düşük diyalizat Na’u ile tedavi verildiğinde diyaliz öncesi Na konsantrasyonları 136.9 ± 1.48 mEq/L’den, 133.0 ± 2.07 mEq/L’ye azaldı(p<0.001) ve sonra 140.1 ± 2.9 oldu (bazale göre p<0.001). Düşük diyalizat sodyumu ile tedavi sonrası hastaların susama hislerinde azalma oldu. Hastalara yeniden standart sodyumlu diyaliz tedavisi uygulandığında susama hisleri tedavi öncesi aşamayla aynı olacak şekilde arttı. Hastalarda diyaliz esnasında gözlenen hipotansif atak sıklığında tüm çalışma süresince anlamlı bir değişiklik olmadı. Sonuç: Hemodiyaliz hastalarında diyaliz öncesi Na konsantrasyonuna göre diyalizat sodyumunun azaltılması, hastalarda kan basıncını, İDKA’nı ve susama hissini azaltmıştır. Hastalar tekrar standart Na’lu diyalizat ile tedavi olduklarında kan basıncındaki düşme, prediyaliz Na değeri yükselmesine ve IDKA eski haline dönmesine rağmen hala devam etmekteydi.

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Cite This Article

ESEN, R., ERKOÇ, R. (2010). Effects of lowering dialysate sodium in hemodialysis patients with hypertension. Tıp Araştırmaları Dergisi, Cilt: 8 - Sayı: 3, 160–166. https://ajindex.com/articles/361656

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