Evidence map›Paper›PMID 22005822›Full record

ArticleIntensive care medicine2012

Acute kidney injury reduces the hepatic metabolism of midazolam in critically ill patients.

C J Kirwan, I A M MacPhee, T Lee, D W Holt, B J Philips

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Article in Intensive care medicine, 2012. 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
2.3field-weighted citation impact, top 13% 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, 60 citations in OpenAlex.

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  7. VEGF mitigates histone-induced pyroptosis in the remote liver injury associated with renal allograft ischemia-reperfusion injury in rats.American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons · 2018
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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

5 authors at 2 institutions in 1 country.

C J KirwanGeneral Intensive Care, St George's Hospital, NHS Trust, Blackshaw Road, London SW17 0QT, UK. cjkirwan100@msn.com
I A M MacPhee
T Lee
D W Holt
B J Philips
St George's, University of London · GBSt George's Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionAcute kidney injury (AKI) is a common and serious complication increasing morbidity and mortality from all causes of hospital admission. We have previously shown that AKI decreases midazolam metabolism, a substrate of the cytochrome P450 3A (CYP3A) enzymes and our primary aim was to determine if this effect is dependent on the severity of AKI. We also present preliminary data on the functional impact of different genotypes of CYP3A.

methodsCritically ill patients at risk of AKI and admitted to a general intensive care unit were categorised after initial resuscitation according to the RIFLE criteria for AKI. Midazolam (1mg) was administered and the serum concentration of midazolam measured at 4 h. Samples were taken for CYP3A genotyping.

resultsSeventy-three patients were assigned to categories R, I and F of the RIFLE criteria or C (controls). Midazolam concentrations (ng mL(-1)) increased significantly (p = 0.002) as the severity of AKI worsened [control 3.1 (1.4-5.9), risk 4.7 (1.3-10.3), injury 3.9 (2.0-11.1) and failure 6.8 (2.2-113.6)] and were predicted by the duration of AKI (p = 0.000) and γ-glutamyl transferase (p = 0.005) concentrations. Increasing BMI negatively predicted the midazolam concentration (p = 0.001). Preliminary data suggest this effect is diminished if the patient expresses functional CYP3A5.

conclusionIncreasing severity and duration of AKI are associated with decreased midazolam elimination. We propose that this is caused by impaired CYP3A activity secondary to AKI. The exact mechanism remains to be elucidated. This may have important implications for our drug treatment of critically ill patients.

Indexed as

Critical IllnessAcute Kidney InjuryAnesthetics, IntravenousCytochrome P-450 CYP3AGenotypeHumansLiverMidazolamPredictive Value of TestsSeverity of Illness IndexAnesthetics, IntravenousCYP3A5 protein, humanCytochrome P-450 CYP3AMidazolam

Identifiers

PMID22005822
OpenAlexW2005513587

What OpenQuestion holds

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Registered trials

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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.