Evidence map›Paper›PMID 29954331›Full record

Observational studyBMC nephrology2018

Once-weekly hemodialysis combined with low-protein and low-salt dietary treatment as a favorable therapeutic modality for selected patients with end-stage renal failure: a prospective observational study in Japanese patients.

Toshiyuki Nakao, Yoshie Kanazawa, Toshimasa Takahashi

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC nephrology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed, 2 pooled it
1.9field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 21 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Ten tips for the first hemodialysis sessions.Clinical kidney journal · 2026
    Review
  5. Twice Weekly versus Thrice Weekly Hemodialysis-A Pilot Cross-Over Equivalence Trial.Clinical journal of the American Society of Nephrology : CJASN · 2024
    Article
  6. Smoothing transition to dialysis to improve early outcomes after dialysis initiation among old and frail adults-a narrative review.Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association · 2022
    Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Toshiyuki NakaoDepartment of Clinical Research, Organization for Kidney and Metabolic Disease Treatment, 1-32-1, Okusawa, Setagaya ward, Tokyo, 158-0083, Japan. t-nakao@tokyo-med.ac.jp.
Yoshie KanazawaDepartment of Clinical Research, Organization for Kidney and Metabolic Disease Treatment, 1-32-1, Okusawa, Setagaya ward, Tokyo, 158-0083, Japan.
Toshimasa TakahashiDepartment of Clinical Research, Organization for Kidney and Metabolic Disease Treatment, 1-32-1, Okusawa, Setagaya ward, Tokyo, 158-0083, Japan.
Minamiaoyama Eye Clinic · JPSeigakuin University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundFor patients with end-stage renal failure (ESFR), thrice-weekly hemodialysis is a standard care. Once-weekly hemodialysis combined with low-protein and low-salt dietary treatment (OWHD-DT) have been rarely studied. Therefore, here, we describe our experience on OWHD-DT, and assess its long-term effectiveness.

methodsWe instituted OWHD-DT therapy in 112 highly motivated patients with creatinine clearance below 5.0 mL/min. They received once-weekly hemodialysis on a diet of 0.6 g/kg/day of protein adjusted for sufficient energy intake, and less than 6 g/day of salt intake. Serial changes in their clinical, biochemical and nutritional parameters were prospectively observed, and the weekly time spent for hospital visits as well as their monthly medical expenses were compared with 30 age, sex- and disease-matched thrice-weekly hemodialysis patients.

resultsThe duration of successfully continued OWHD-DT therapy was more than 4 years in 11.6% of patients, 3 years in 16.1%, 2 years in 24.1% and 1 year in 51.8%. Time required per week for hospital attendance was 66.7% shorter and monthly medical expenses were 50.5% lower in the OWHD-DT group than in the thrice-weekly hemodialysis group (both p < 0.001). Patient survival rates in the OWHD-DT group were better than those in the Japan Registry (p < 0.001). Serum urea nitrogen significantly decreased; hemoglobin significantly increased; and albumin and body mass index were not significantly different from baseline values. In the OWHD-DT patients, serum albumin at 1 and 2 years after initiation of therapy was significantly higher compared with prevalent thrice-weekly hemodialysis patients. Furthermore, residual urine output was significantly higher in the OWHD-DT patients than in those receiving thrice-weekly hemodialysis (p < 0.05). Interdialytic weight gain over the course of the entire week between treatments in patients on OWHD-DT were 0.9 ± 1.0, 2.0 ± 1.3, 1.9 ± 1.2, 1.9 ± 1.5 and 1.8 ± 1.0 kg at 1, 6, 12, 18 and 24 months, respectively, though the weekly weight gain for thrice-weekly hemodialysis group (summed over all 3 treatments) was 8.6 ± 0.63 kg, p < 0.001.

conclusionsOWHD-DT may be a favorable therapeutic modality for selected highly motivated patients with ESRF. However, this treatment cannot be seen as a general maintenance strategy.

trial registrationUMIN000027555 , May 30, 2017 (retrospectively registered).

Indexed as

AgedCombined Modality TherapyDiet, Protein-RestrictedDiet, Sodium-RestrictedFemaleHumansJapanKidney Failure, ChronicMaleMiddle AgedProspective StudiesRenal DialysisTreatment OutcomeDialysis adequacyEnd-stage renal failureInfrequent dialysisLow protein dietOnce-weekly hemodialysis

Identifiers

PMID29954331
PMCPMC6022443
OpenAlexW2809700230

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.