Evidence map›Paper›PMID 31464594›Full record

ArticleBMC neurology2019

Bismuth encephalopathy- a rare complication of long-standing use of bismuth subsalicylate.

Cláudia Borbinha, Filipa Serrazina, Manuel Salavisa, Miguel Viana-Baptista

Open access · goldAbstract readCase Reports
In one paragraph

Article in BMC neurology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.2field-weighted citation impact, top 9% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 48 citations in OpenAlex.

  1. Drug-Induced Myoclonus: A Systematic Review.Medicina (Kaunas, Lithuania) · 2025
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Unravelling the developmental toxicity of heavy metals using zebrafish as a model: a narrative review.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2025
    Review
  6. Update on the Epidemiology and Management of Microscopic Colitis.Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association · 2025
    Review
  7. Article
  8. Bioactive Bismuth Compounds: Is Their Toxicity a Barrier to Therapeutic Use?International journal of molecular sciences · 2024
    Review
  9. Article
  10. Review
  11. Review
  12. Review
  13. Article
  14. Pharmacokinetics of Bismuth following Oral Administration of Wei Bi Mei in Healthy Chinese Volunteers.Evidence-based complementary and alternative medicine : eCAM · 2020
    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

4 authors at 2 institutions in 1 country.

Cláudia BorbinhaNeurology Department. Hospital Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal. claudiaborbinha3@gmail.com.
Filipa SerrazinaNeurology Department. Hospital Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal.
Manuel SalavisaNeurology Department. Hospital Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal.
Miguel Viana-BaptistaNeurology Department. Hospital Egas Moniz, Centro Hospitalar de Lisboa Ocidental, Lisbon, Portugal.
Hospital de Egas Moniz · PTUniversidade Nova de Lisboa · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDrugs containing bismuth, although usually safe, may rarely cause neurotoxicity. CASE PRESENTATION: We describe the case of a 44-year-old woman treated with bismuth subsalicylate for about 20 years, who developed abnormal behaviour and postural instability in two weeks. On examination, she had greyish discoloration of teeth, was confused and presented generalized myoclonic jerks. In the next days, her clinical condition deteriorated, with a reduction in alertness and more exuberant myoclonus. Brain MRI was unremarkable. CSF revealed mild elevation of protein content (47 mg/dL; reference range: 15-45 mg/dL) and elevation of white blood cell count (10/μL). Bismuth levels in urine (375 μg/L), serum (260 μg/L) and CSF (21.4 μg/L) samples were highly above the threshold for toxicity. Following supportive treatment and bismuth discontinuation, she made a full recovery within weeks.

conclusionsAlthough rare, bismuth encephalopathy should be considered in patients presenting with subacute encephalopathy and myoclonus. This encephalopathy can be subacute even after a chronic exposure. Cessation of bismuth can lead to a complete resolution in weeks.

Indexed as

AdultBismuthBrain DiseasesFemaleHumansNeurotoxicity SyndromesOrganometallic CompoundsSalicylatesBismuthbismuth subsalicylateOrganometallic CompoundsSalicylatesBismuth subsalicylateEncephalopathyMyoclonusNeurotoxicity

Identifiers

PMID31464594
PMCPMC6714398
OpenAlexW2970318044

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.