Evidence map›Paper›PMID 30214979›Full record

ReviewClinical neurophysiology practice2017

Post-hypoxic myoclonus: Differentiating benign and malignant etiologies in diagnosis and prognosis.

Brin Freund, Peter W Kaplan

Open access · goldAbstract readReview
In one paragraph

Review in Clinical neurophysiology practice, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
2.4field-weighted citation impact, top 11% 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

18 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Article
  3. Lance-Adams Syndrome: An Updated Review of a Rare Post-Hypoxic Complication.Tremor and other hyperkinetic movements (New York, N.Y.) · 2025
    Review
  4. Review
  5. Review
  6. Article
  7. Review
  8. Post hypoxic myoclonus: A tale of two minds.Epilepsy & behavior reports · 2023
    Article
  9. Article
  10. Lance Adams syndrome: two cases report and literature review.The Journal of international medical research · 2022
    Review
  11. Article
  12. Article
  13. Article
  14. Neurologic prognostication after resuscitation from cardiac arrest.Journal of the American College of Emergency Physicians open · 2020
    Review
  15. Post-hypoxic myoclonus: The good, the bad and the ugly.Clinical neurophysiology practice · 2017
    Article
  16. Article
  17. Presumptive Acute Post-Hypoxic Myoclonus Following Return of Spontaneous Circulation in a Cat and a Dog.Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001)
    Article
  18. 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

2 authors at 2 institutions in 1 country.

Brin FreundJohns Hopkins Hospital, Department of Neurology, Baltimore, MD, USA.
Peter W KaplanJohns Hopkins Bayview Medical Center, Department of Neurology, Baltimore, MD, USA.
Johns Hopkins Bayview Medical Center · USJohns Hopkins Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Neurological function following cardiac arrest often determines prognosis. Objective tests, including formal neurological examination and neurophysiological testing, are performed to provide medical providers and decision-makers information to help guide care based on the extent of neurologic injury. The demonstration of post-hypoxic myoclonus on examination has been described to portend poor outcome after cardiac arrest, but recent studies have challenged this idea given that different forms of post-hypoxic myoclonus predict disparate prognoses. The presence of myoclonus status epilepticus (MSE) usually signals a poor outcome, especially if generalized. Lance-Adams syndrome (LAS), another form of post-hypoxic myoclonus, carries a better prognosis. Differentiating subtypes of post-hypoxic myoclonus is therefore critical. This can be difficult in the acute setting with clinical examination alone due to the use of sedation to facilitate mechanical ventilation, and neurophysiological studies may be more reliable. In this review, we describe and compare clinical and neurophysiological features of MSE and LAS. Generalized epileptiform activity and burst suppression on electroencephalography tend to be more common in MSE, and focal epileptiform activity at the vertex may define LAS. Those with multifocal MSE may have better outcomes than those with generalized MSE. We conclude that neurophysiological testing is vital acutely after cardiac arrest when post-hypoxic myoclonus is present to help determine prognostication and guide decision-making.

Indexed as

Cardiac arrestLance-Adams syndromeMyoclonus status epilepticusPost-hypoxic myoclonus

Identifiers

PMID30214979
PMCPMC6123861
OpenAlexW2611903095

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.