Evidence map›Paper›PMID 28419159›Full record

SynthesisPloS one2017

Oral potassium supplementation for management of essential hypertension: A meta-analysis of randomized controlled trials.

Jalal Poorolajal, Fatemeh Zeraati, Ali Reza Soltanian, Vida Sheikh, Elham Hooshmand, Akram Maleki

Open access · goldAbstract readMeta-Analysis
In one paragraph

Synthesis in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 3 pooled it
3.9field-weighted citation impact, top 6% 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

39 citing papers in PubMed, 3 syntheses or guidelines pooled it, 82 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. The Japanese Society of Hypertension Guidelines for the Management of Hypertension (JSH 2019).Hypertension research : official journal of the Japanese Society of Hypertension · 2019
    Guideline
  4. Trial
  5. Review
  6. Changes in blood pressure following the relocation of individuals to well-insulated and well-ventilated apartments building.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  7. Article
  8. The Japanese Society of Hypertension Guidelines for blood pressure control using digital technologies.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Article
  9. Brazilian Guidelines of Hypertension - 2025.Arquivos brasileiros de cardiologia · 2025
    Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Urinary Na/K ratio is a predictor of developing chronic kidney disease in the general population.Hypertension research : official journal of the Japanese Society of Hypertension · 2024
    Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Review
  20. Article
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

6 authors at 2 institutions in 1 country.

Jalal PoorolajalDepartment of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.ORCID http://orcid.org/0000-0002-3758-3006
Fatemeh ZeraatiMedicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
Ali Reza SoltanianNoncommunicable Diseases Research Center, Hamadan University of Medical Sciences, Hamadan, Iran.
Vida SheikhDepartment of Internal Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
Elham HooshmandDepartment of Public Health, Neyshabur University of Medical Sciences, Neyshabur, Iran.
Akram MalekiDepartment of Epidemiology, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran.
Hamedan University of Medical Sciences · IRUniversity of Neyshabur · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

importanceIncreased dietary potassium intake is thought to be associated with low blood pressure (BP). Whether potassium supplementation may be used as an antihypertensive agent is a question that should be answered.

objectiveTo assess the effect of oral potassium supplementation on blood pressure in patients with primary hypertension. SEARCH

methodsWe searched Medline, Web of Science, Scopus, Cochrane Central Register of Controlled Trials until October 2016. We also screened reference lists of articles and previous reviews. We applied no language restrictions. SELECTION CRITERIA: We included randomized placebo-controlled clinical trials addressing the effect of potassium supplementation on primary hypertension for a minimum of 4 weeks. DATA COLLECTION AND ANALYSIS: We extracted data on systolic and diastolic BP (SBP and DBP) at the final follow-up. We explored the heterogeneity across studies using Cochran's test and I2 statistic and assessed the probability of publication bias using Begg's and Egger's tests. We reported the mean difference (MD) of SBP and DBP in a random-effects model.

resultsWe found a total of 9059 articles and included 23 trials with 1213 participants. Compared to placebo, potassium supplementation resulted in modest but significant reductions in both SBP (MD -4.25 mmHg; 95% CI: -5.96 to -2.53; I2 = 41%) and DBP (MD -2.53 mmHg; 95% CI: -4.05 to -1.02; I2 = 65%). According to the change-score analysis, based on 8 out of 23 trials, compared to baseline, the mean changes in SBP (MD -8.89 mmHg; 95% CI: -13.67 to -4.11) and DBP (MD -6.42 mmHg; 95% CI: -10.99 to -1.84) was significantly higher in the intervention group than the control group.

conclusionsOur findings indicated that potassium supplementation is a safe medication with no important adverse effects that has a modest but significant impact BP and may be recommended as an adjuvant antihypertensive agent for patients with essential hypertension.

Indexed as

Dietary SupplementsBlood PressureEssential HypertensionHumansHypertensionPotassiumRandomized Controlled Trials as TopicTreatment OutcomePotassium

Identifiers

PMID28419159
PMCPMC5395164
OpenAlexW2605382049

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.