Evidence map›Paper›PMID 19789438›Full record

ArticleCritical care medicine2010

Anemia causes hypoglycemia in intensive care unit patients due to error in single-channel glucometers: methods of reducing patient risk.

Heather F Pidcoke, Charles E Wade, Elizabeth A Mann, Jose Salinas, Brian M Cohee, John B Holcomb, Steven E Wolf

Open access · greenAbstract read
In one paragraph

Article in Critical care medicine, 2010. 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
6.5field-weighted citation impact, top 3% 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, 61 citations in OpenAlex.

  1. Trial
  2. Article
  3. Accuracy of Blood Glucose Measurement and Blood Glucose Targets.Journal of diabetes science and technology · 2020
    Review
  4. Article
  5. Article
  6. Review
  7. [Glucose control in the critically ill. Innovations and contemporary strategies].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2013
    Article
  8. Review
  9. Impact of hypoglycemia in hospitalized patients.Current diabetes reports · 2013
    Review
  10. Article
  11. Article
  12. Review
  13. Blood glucose measurements in critically ill patients.Journal of diabetes science and technology · 2012
    Review
  14. Article
  15. Review
  16. Diabetes does not influence selected clinical outcomes in critically ill burn patients.Journal of burn care & research : official publication of the American Burn Association
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Heather F PidcokeUnited States Army Institute of Surgical Research, Fort Sam Houston, TX, USA. heather.pidcoke@amedd.army.mil
Charles E Wade
Elizabeth A Mann
Jose Salinas
Brian M Cohee
John B Holcomb
Steven E Wolf
United States Army · USThe University of Texas Health Science Center at San Antonio · US

Funding

Effects of Insulin on Post-Burn HypermetabolismR01GM063120 · NIGMS · UNIVERSITY OF TEXAS MEDICAL BR GALVESTON · PI WOLF, STEVEN E · 2003 to 2007
$1.4M
NIGMS NIH HHS 1 R01 GM063120-04NIGMS NIH HHS R01 GM063120
6 · The paper itself

Abstract

objectiveIntensive insulin therapy in the critically ill reduces mortality but carries the risk of increased hypoglycemia. Point-of-care blood glucose analysis is standard; however, anemia causes falsely high values and potentially masks hypoglycemia. Permissive anemia is practiced routinely in most intensive care units. We hypothesized that point-of-care glucometer error due to anemia is prevalent, can be corrected mathematically, and correction uncovers occult hypoglycemia during intensive insulin therapy.

designThe study has both retrospective and prospective phases. We reviewed data to verify the presence of systematic error, determine the source of error, and establish the prevalence of anemia. We confirmed our findings by reproducing the error in an in vitro model. Prospective data were used to develop a correction formula validated by the Monte Carlo method. Correction was implemented in a burn intensive care unit and results were evaluated after 9 mos.

settingBurn and trauma intensive care units at a single research institution. PATIENTS/SUBJECTS: Samples for in vitro studies were taken from healthy volunteers. Samples for formula development were from critically ill patients who received intensive insulin therapy.

interventionsInsulin doses were calculated based on predicted serum glucose values from corrected point-of-care glucometer measurements. MEASUREMENTS AND MAIN

resultsTime-matched point-of-care glucose, laboratory glucose, and hematocrit values. We previously found that anemia (hematocrit <34%) produces systematic error in glucometer measurements. The error was correctible with a mathematical formula developed and validated, using prospectively collected data. Error of uncorrected point-of-care glucose ranged from 19% to 29% (p < .001), improving to < or = 5% after mathematical correction of prospective data. Comparison of data pairs before and after correction formula implementation demonstrated a 78% decrease in the prevalence of hypoglycemia in critically ill and anemic patients treated with insulin and tight glucose control (p < .001).

conclusionsA mathematical formula that corrects erroneous point-of-care glucose values due to anemia in intensive care unit patients reduces the prevalence of hypoglycemia during intensive insulin therapy.

Indexed as

Intensive Care UnitsAnemiaBlood GlucoseCritical CareFalse Negative ReactionsHematocritHumansHypoglycemiaInsulinMonte Carlo MethodPoint-of-Care SystemsProspective StudiesRetrospective StudiesRisk FactorsBlood GlucoseInsulin

Identifiers

PMID19789438
PMCPMC4267684
OpenAlexW2021138123

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.