Evidence map›Paper›PMID 26574562›Full record

ArticleJournal of intensive care medicine2016

The Modified Apnea Test During Brain Death Determination: An Alternative in Patients With Hypoxia.

Aditi Ahlawat, Raphael Carandang, Stephen O Heard, Susanne Muehlschlegel

Open access · greenAbstract readCase Reports
In one paragraph

Article in Journal of intensive care medicine, 2016. 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
1.3field-weighted citation impact, top 16% 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, 23 citations in OpenAlex.

  1. Guideline
  2. Observational
  3. Article
  4. Evaluation of the new modified apnea test in confirmation of brain death.Journal of research in medical sciences : the official journal of Isfahan University of Medical Sciences · 2024
    Article
  5. Article
  6. Article
  7. Article
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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

4 authors at 1 institution in 1 country.

Aditi AhlawatDepartment of Neurology (Neurocritical Care), University of Massachusetts Medical School, Worcester, MA, USA.
Raphael CarandangDepartment of Neurology (Neurocritical Care), University of Massachusetts Medical School, Worcester, MA, USA Department of Surgery, University of Massachusetts Medical School, Worcester, MA, USA.
Stephen O HeardDepartment of Anesthesia/Critical Care, University of Massachusetts Medical School, Worcester, MA, USA.
Susanne MuehlschlegelDepartment of Neurology (Neurocritical Care), University of Massachusetts Medical School, Worcester, MA, USA Department of Surgery, University of Massachusetts Medical School, Worcester, MA, USA Department of Anesthesia/Critical Care, University of Massachusetts Medical School, Worcester, MA, USA susanne.muehlschlegel@umassmemorial.org.
University of Massachusetts Chan Medical School · US

Funding

Improving Clinical Decisions for Critically Ill Traumatic Brain Injury PatientsK23HD080971 · NICHD · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI MUEHLSCHLEGEL, SUSANNE · 2015 to 2019
$751k
NICHD NIH HHS 1K23HD080971NICHD NIH HHS K23 HD080971
6 · The paper itself

Abstract

introductionConventional apnea testing in patients with severe hypoxemia or hemodynamic instability with removal from the ventilator support is unsafe. We describe an alternative approach to apnea testing, which may be used in patients with hypoxia unable to undergo conventional apnea testing.

methodsCase Report. A 42-year-old man had a severe traumatic brain injury resulting in diffuse cerebral edema and subarachnoid hemorrhage with herniation. His presentation was complicated by hypoxic respiratory failure from pulmonary contusions and hemorrhagic shock. On hospital day 2, the patient lost brain stem reflexes. Brain death testing with conventional apnea testing was attempted but aborted due to hypoxia.

resultsA modified apnea test was applied, which had been approved by appropriate hospital committees including critical care operations, ethics, and the brain death protocol council. Minute ventilation was gradually decreased by ≥50% to attain a PaCo2 level ≥20 mm Hg above baseline. The ventilation mode was then switched from volume control to continuous positive airway pressure while observing the patient for signs of respiration for a duration of 60 seconds.

conclusionThe modified apnea test does not require circuit disconnection and can be successfully applied to determine brain death without compromising safety in high-risk patients having severe hypoxia.

Indexed as

AdultApneaBlood Gas AnalysisBrain DeathBrain InjuriesCarbon DioxideContinuous Positive Airway PressureFatal OutcomeHumansHypoxiaMaleRespirationRespiratory Function TestsCarbon Dioxideapnea testingbrain deathneurocritical care

Identifiers

PMID26574562
PMCPMC4684955
OpenAlexW2275116854

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.