Evidence map›Paper›PMID 31788351›Full record

ArticleTranslational vision science & technology2019

Association Between Arterial Blood Gas Variation and Intraocular Pressure in Healthy Subjects Exposed to Acute Short-Term Hypobaric Hypoxia.

Yuan Xie, Yiquan Yang, Ying Han, Diya Yang, Yunxiao Sun, Xinmao Wang, Anh Hong Nguyen, Yihan Chen, Jiaxin Tian, Qing Zhang and 6 more

Open access · goldAbstract read
In one paragraph

Article in Translational vision science & technology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
0.7field-weighted citation impact, top 23% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Impact of flight and equivalent short-term high-altitude exposure on ocular structures and function.Medical hypothesis, discovery & innovation ophthalmology journal · 2023
    Review
  9. 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

16 authors at 4 institutions in 2 countries.

Yuan XieBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Yiquan YangBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Ying HanDepartment of Ophthalmology, University of California, San Francisco, CA, USA.
Diya YangBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Yunxiao SunBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Xinmao WangDepartment of Pneumology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Anh Hong NguyenDepartment of Ophthalmology, University of California, San Francisco, CA, USA.
Yihan ChenBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Jiaxin TianBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Qing ZhangBeijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Chen XinBeijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Kai CaoBeijing Institute of Ophthalmology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Huaizhou WangBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Xiaofang LiuDepartment of Pneumology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
Guozhong WangDepartment of Hyperbaric and Hypobaric Chamber, Civil Aviation General Hospital, Beijing, China.
Ningli WangBeijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing Ophthalmology and Visual Sciences Key Laboratory, Beijing, China.
Capital Medical University · CNBeijing Tongren Hospital · CNUniversity of California, San Francisco · USAviation General Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo investigate the association between changes in arterial blood gases and intraocular pressure (IOP) after acute, short-term exposure to simulated elevation of 4000 m above sea level.

methodsTwenty-five healthy young lowlanders participated in this prospective study. IOP was measured in both eyes with an Accupen tonometer. Arterial blood gas parameters (partial oxygen pressure [PaO

resultsPaO

conclusionsHypobaric hypoxia triggers plasma bicarbonate ion reduction which, rather than pH, may decrease aqueous humor formation and subsequently cause IOP reduction. These findings may shed light on the mechanism of IOP regulation at high altitude. TRANSLATIONAL RELEVANCE: Hypoxia-triggered reduction in plasma bicarbonate ion may decrease aqueous humor production, leading to IOP reduction at high altitude. These findings may provide new insight into a potential mechanism of IOP regulation. Hypobaric hypoxia at high altitude is an environmental factor that can reduce IOP and, therefore, deserves further study.

Indexed as

arterial blood gasesbicarbonate ionhigh altitudehypobaric chamberhypoxiaintraocular pressure

Identifiers

PMID31788351
PMCPMC6871546
OpenAlexW2990375446

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.