Evidence map›Paper›PMID 34465821›Full record

Observational studyScientific reports2021

Automated versus manual urine output monitoring in the intensive care unit.

Joni Minor, Ali Smith, Frederic Deutsch, John A Kellum

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
4.8field-weighted citation impact, top 4% 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

17 citing papers in PubMed, 27 citations in OpenAlex.

  1. Article
  2. Review
  3. Automated monitoring of urine output in hospitalized patients with indwelling urinary catheters: a clinical evaluation on the cardiology ward.Netherlands heart journal : monthly journal of the Netherlands Society of Cardiology and the Netherlands Heart Foundation · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Definition of Oliguria in the Intensive Care Unit: How Do You Do It?Clinical journal of the American Society of Nephrology : CJASN · 2024
    Article
  9. Article
  10. Review
  11. Evaluation of a real-life experience with a digital fluid balance monitoring technology.Technology and health care : official journal of the European Society for Engineering and Medicine · 2024
    Article
  12. Observational
  13. Article
  14. Review
  15. Article
  16. Article
  17. 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

4 authors at 3 institutions in 2 countries.

Joni MinorUniversity of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA.
Ali SmithDepartment of Critical Care Medicine, Center for Critical Care Nephrology and CRISMA Center, University of Pittsburgh, 3347 Forbes Avenue, Suite 220, Pittsburgh, PA, 15213, USA.
Frederic DeutschBiostatistics Statistical Consulting Ltd, Mercaz Renanim Maccabim, Israel.
John A KellumUniversity of Pittsburgh Medical Center (UPMC), Pittsburgh, PA, USA. kellumja@upmc.edu.
University of Pittsburgh · USMaccabi Health Care Services · ILUniversity of Pittsburgh Medical Center · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Acute kidney injury (AKI) is defined by changes in serum creatinine and urine output (UO). Significant limitations exist regarding accurate ascertainment of urine output even within the intensive care unit. We sought to evaluate an automated urine output collections system and compare it to nursing measurements. We prospectively collected urine output using an electronic urine monitoring system and compared it to charted hourly UO in 44 patients after cardiac surgery at a single university hospital ICU. We calculated UO and oliguria rates and compared them to data from the sensor and from nursing charting. A total of 187 hourly UO measurements were obtained and on average, UO was reported 47 min late, with a median of 18 min, and a maximum of almost 6 h. Patients had a mean hourly UO of 76.3 ml over the observation period. Compared to manual measurements by study personnel, nurses significantly overestimated hourly UO by 19.9 ml (95% CI: 10.3; 29.5; p =  < 0.001). By contrast, the mean difference between the UO measured with the sensor and by study personnel was 2.29 ml (95% CI: - 6.7; 11.3), p = 0.61. Electronic UO monitoring is significantly more accurate than nurse-performed manual measurements in actual intensive care patients. Furthermore, timely ascertainment of UO is difficult to achieve with manual technique, resulting in important delays in detecting oliguria perhaps leading to missed cases of AKI.

Indexed as

Severity of Illness IndexUrinationAcute Kidney InjuryCardiac Surgical ProceduresHumansIntensive Care UnitsOliguriaProspective StudiesRisk Factors

Identifiers

PMID34465821
PMCPMC8408210
OpenAlexW3196321863

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.