Evidence map›Paper›PMID 25501428›Full record

ArticlePhysiological reports2014

Rates of carbon monoxide elimination in males and females.

Gerald S Zavorsky, Janet Tesler, Joshua Rucker, Ludwik Fedorko, James Duffin, Joseph A Fisher

Open access · goldAbstract read
In one paragraph

Article in Physiological reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
0.1field-weighted citation impact, top 44% 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

16 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Objective measure of smoking status highlights disparities by sex.American heart journal plus : cardiology research and practice · 2022
    Article
  10. Review
  11. Can Exhaled Carbon Monoxide Be Used as a Marker of Exposure? A Cross-Sectional Study in Young Adults.International journal of environmental research and public health · 2021
    Article
  12. Article
  13. Factors Contributing to CO Uptake and Elimination in the Body: A Critical Review.International journal of environmental research and public health · 2020
    Review
  14. Article
  15. Article
  16. Review
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 4 institutions in 2 countries.

Gerald S ZavorskyDepartment of Health and Sport Sciences, University of Louisville, Louisville, Kentucky Department of Physiology and Biophysics, University of Louisville, Louisville, Kentucky.
Janet TeslerDepartment of Physiology, University of Toronto, Toronto, Ontario, Canada.
Joshua RuckerDepartment of Anesthesia, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
Ludwik FedorkoDepartment of Physiology, University of Toronto, Toronto, Ontario, Canada.
James DuffinDepartment of Physiology, University of Toronto, Toronto, Ontario, Canada Department of Anesthesia, University Health Network, University of Toronto, Toronto, Ontario, Canada.
Joseph A FisherDepartment of Physiology, University of Toronto, Toronto, Ontario, Canada Department of Anesthesia, University Health Network, University of Toronto, Toronto, Ontario, Canada.
University Health Network · CAUniversity of Toronto · CAMount Sinai Hospital · CAUniversity of Louisville · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The purpose of this study was to verify the previously reported shorter half-time of elimination (t½) of carbon monoxide (CO) in females compared to males. Seventeen healthy subjects (nine men) completed three sessions each, on separate days. For each session, subjects were exposed to CO to raise the carboxyhemoglobin percentage (COHb) to ~10%; then breathed in random order, either (a) 100% O2 at poikilocapnia (no CO2 added), or (b) hyperoxia while maintaining normocapnia using sequential gas delivery, or (c) voluntary hyperpnea at~4x the resting minute ventilation. We measured minute ventilation, hemoglobin concentration [Hb] and COHb at 5 min intervals. The half-time of reduction of COHb (t½) was calculated from serial blood samples. The total hemoglobin mass (HbTOT) was calculated from [Hb] and estimated blood volume from a nomogram based on gender, height, and weight. The t½ in the females was consistently shorter than in males in all protocols. This relationship was sustained even after controlling for alveolar ventilation (P < 0.05), with the largest differences in t½ between the genders occurring at low alveolar ventilation rates. However, when t½ was further normalized for HbTOT, there was no significant difference in t½ between genders at alveolar ventilation rates between 4 and 40 L/min (P = 0.24). We conclude that alveolar ventilation and HbTOT are sufficient to account for a major difference in CO clearance between genders under resting (nonexercising) conditions.

Indexed as

Alveolar ventilationcarboxyhemoglobingender differences

Identifiers

PMID25501428
PMCPMC4332215
OpenAlexW2170571687

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.