Evidence map›Paper›PMID 24126442›Full record

ArticleCritical care medicine2014

Effect of intermittent phrenic nerve stimulation during cardiothoracic surgery on mitochondrial respiration in the human diaphragm.

A Daniel Martin, Anna-Marie Joseph, Thomas M Beaver, Barbara K Smith, Tomas D Martin, Kent Berg, Philip J Hess, Harsha V Deoghare, Christiaan Leeuwenburgh

Open access · greenAbstract read
In one paragraph

Article in Critical care medicine, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 pooled it
3.8field-weighted citation impact, top 7% 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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 78 citations in OpenAlex.

  1. Pooled it
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  15. Diaphragm Neurostimulation Assisted Ventilation in Critically Ill Patients.American journal of respiratory and critical care medicine · 2023
    Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. Experimental biology and medicine (Maywood, N.J.) · 2022
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

A Daniel Martin1Department of Physical Therapy, University of Florida, Gainesville, FL. 2Department of Aging and Geriatric Research, University of Florida, Gainesville, FL. 3Division of Thoracic and Cardiovascular Surgery, Department of Surgery, University of Florida, Gainesville, FL. 4Department of Anesthesiology, University of Florida, Gainesville, FL. 5Department of Physical Therapy, California State University, Fresno, CA.
Anna-Marie Joseph
Thomas M Beaver
Barbara K Smith
Tomas D Martin
Kent Berg
Philip J Hess
Harsha V Deoghare
Christiaan Leeuwenburgh
University of Florida · US

Funding

University of Florida Older Americans Independence Center (OAIC)P30AG028740 · NIA · UNIVERSITY OF FLORIDA · PI CHRISTIAAN LEEUWENBURGH · 2007 to 2026
$22.8M
UF CLINICAL AND TRANSLATIONAL SCIENCE AWARDUL1RR029890 · NCRR · UNIVERSITY OF FLORIDA · PI NELSON, DAVID R · 2009 to 2011
$14.4M
Rehabilitation Research Career Development ProgramK12HD055929 · NICHD · UNIVERSITY OF TEXAS MED BR GALVESTON · PI BROWN, DAVID A · 2007 to 2021
$11.7M
Respiratory Muscle Training in Ventilator Dependent Pts.R01HD042705 · NICHD · UNIVERSITY OF FLORIDA · PI MARTIN, ANATOLE DANIEL · 2004 to 2008
$1.6M
NCRR NIH HHS UL1 RR029890NIA NIH HHS 1P30AG028740NIA NIH HHS P30 AG028740NICHD NIH HHS K12 HD055929NICHD NIH HHS R01 HD042705
6 · The paper itself

Abstract

objectivesRecent studies have shown that brief periods of mechanical ventilation in animals and humans can lead to ventilator-induced diaphragmatic dysfunction, which includes muscle atrophy, reduced force development, and impaired mitochondrial function. Studies in animal models have shown that short periods of increased diaphragm activity during mechanical ventilation support can attenuate ventilator-induced diaphragmatic dysfunction but corresponding human data are lacking. The purpose of this study was to examine the effect of intermittent diaphragm contractions during cardiothoracic surgery, including controlled mechanical ventilation, on mitochondrial respiration in the human diaphragm.

designWithin subjects repeated measures study.

settingOperating room in an academic health center. PATIENTS: Five subjects undergoing elective cardiothoracic surgery.

interventionsIn patients (age 65.6 ± 6.3 yr) undergoing cardiothoracic surgery, one phrenic nerve was stimulated hourly (30 pulses/min, 1.5 msec duration, 17.0 ± 4.4 mA) during the surgery. Subjects received 3.4 ± 0.6 stimulation bouts during surgery. Thirty minutes following the last stimulation bout, samples of diaphragm muscle were obtained from the anterolateral costal regions of the stimulated and inactive hemidiaphragms. MEASUREMENTS AND MAIN

resultsMitochondrial respiration was measured in permeabilized muscle fibers with high-resolution respirometry. State III mitochondrial respiration rates (pmol O2/s/mg wet weight) were 15.05 ± 3.92 and 11.42 ± 2.66 for the stimulated and unstimulated samples, respectively (p < 0.05). State IV mitochondrial respiration rates were 3.59 ± 1.25 and 2.11 ± 0.97 in the stimulated samples and controls samples, respectively (p < 0.05).

conclusionThese are the first data examining the effect of intermittent contractions on mitochondrial respiration rates in the human diaphragm following surgery/mechanical ventilation. Our results indicate that very brief periods (duty cycle ~1.7%) of activity can improve mitochondrial function in the human diaphragm following surgery/mechanical ventilation.

Indexed as

Cardiac Surgical ProceduresIntraoperative CarePhrenic NerveAgedDiaphragmElectric StimulationFemaleHumansMaleMiddle AgedMitochondriaRespiration, Artificial

Identifiers

PMID24126442
PMCPMC3947040
OpenAlexW2030926724

What OpenQuestion holds

Textmetadata
LicenceTDM
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.