Evidence map›Paper›PMID 25366995›Full record

ArticleCirculation2014

Hydrogen inhalation during normoxic resuscitation improves neurological outcome in a rat model of cardiac arrest independently of targeted temperature management.

Kei Hayashida, Motoaki Sano, Naomi Kamimura, Takashi Yokota, Masaru Suzuki, Shigeo Ohta, Keiichi Fukuda, Shingo Hori

Abstract read
PubMed Publisher
In one paragraph

Article in Circulation, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed
9.1field-weighted citation impact, top 2% 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

74 citing papers in PubMed, 124 citations in OpenAlex.

  1. Trial
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  11. Progress in the Application of Molecular Hydrogen in Medical Skin Cosmetology.Clinical, cosmetic and investigational dermatology · 2025
    Review
  12. Plasma brain-related biomarkers and potential therapeutic targets in pediatric ECMO.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2025
    Review
  13. Article
  14. Article
  15. Article
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  17. Review
  18. Article
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14 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Kei HayashidaFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Motoaki SanoFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.). msano@a8.keio.jp.
Naomi KamimuraFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Takashi YokotaFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Masaru SuzukiFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Shigeo OhtaFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Keiichi FukudaFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Shingo HoriFrom the Department of Emergency and Critical Care Medicine (K.H., M.S., S.H.) and Department of Cardiology (M.S., K.F.), School of Medicine, Keio University, Tokyo, Japan; and Department of Biochemistry and Cell Biology, Institute of Development and Aging Science, Graduate School of Medicine, Nippon Medical School, Kanagawa, Japan (N.K., T.Y., S.O.).
Keio University · JPFukuda Denshi (Japan) · JPSuzuki (Japan) · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWe have previously shown that hydrogen (H2) inhalation, begun at the start of hyperoxic cardiopulmonary resuscitation, significantly improves brain and cardiac function in a rat model of cardiac arrest. Here, we examine the effectiveness of this therapeutic approach when H2 inhalation is begun on the return of spontaneous circulation (ROSC) under normoxic conditions, either alone or in combination with targeted temperature management (TTM). METHODS AND

resultsRats were subjected to 6 minutes of ventricular fibrillation cardiac arrest followed by cardiopulmonary resuscitation. Five minutes after achieving ROSC, post-cardiac arrest rats were randomized into 4 groups: mechanically ventilated with 26% O2 and normothermia (control); mechanically ventilated with 26% O2, 1.3% H2, and normothermia (H2); mechanically ventilated with 26% O2 and TTM (TTM); and mechanically ventilated with 26% O2, 1.3% H2, and TTM (TTM+H2). Animal survival rate at 7 days after ROSC was 38.4% in the control group, 71.4% in the H2 and TTM groups, and 85.7% in the TTM+H2 group. Combined therapy of TTM and H2 inhalation was superior to TTM alone in terms of neurological deficit scores at 24, 48, and 72 hours after ROSC, and motor activity at 7 days after ROSC. Neuronal degeneration and microglial activation in a vulnerable brain region was suppressed by both TTM alone and H2 inhalation alone, with the combined therapy of TTM and H2 inhalation being most effective.

conclusionsH2 inhalation was beneficial when begun after ROSC, even when delivered in the absence of hyperoxia. Combined TTM and H2 inhalation was more effective than TTM alone.

Indexed as

Administration, InhalationAnimalsBlood CirculationBody TemperatureCerebral CortexDisease Models, AnimalElectric StimulationHeart ArrestHippocampusHydrogenMaleMaze LearningNervous System DiseasesRatsRats, WistarResuscitationHydrogenantioxidantscardiopulmonary resuscitationheart arrestischemiareperfusion injury

Identifiers

PMID25366995
OpenAlexW2150197616

What OpenQuestion holds

Textmetadata
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.