Evidence map›Paper›PMID 35373886›Full record

ArticleBJOG : an international journal of obstetrics and gynaecology2022

Intrahepatic cholestasis of pregnancy - Time to redefine the reference range of total serum bile acids: A cross-sectional study.

Mor Huri, Viola Seravalli, Camilla Lippi, Lorenzo Tofani, Andrea Galli, Felice Petraglia, Mariarosaria Di Tommaso

Abstract read
In one paragraph

Article in BJOG : an international journal of obstetrics and gynaecology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Article
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  6. Article
  7. Intrahepatic cholestasis of pregnancy.Nature reviews. Disease primers · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Bile Acids in Intrahepatic Cholestasis of Pregnancy.Diagnostics (Basel, Switzerland) · 2022
    Review
  16. 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

7 authors.

Mor HuriObstetrics and Gynaecology Unit, Department of Health Sciences, University of Florence, Florence, Italy.
Viola SeravalliObstetrics and Gynaecology Unit, Department of Health Sciences, University of Florence, Florence, Italy.ORCID 0000-0001-8706-3925
Camilla LippiObstetrics and Gynaecology Unit, Department of Health Sciences, University of Florence, Florence, Italy.
Lorenzo TofaniDepartment of Statistics, Computer Science, Applications, University of Florence, Florence, Italy.
Andrea GalliGastroenterology Unit, Department of Experimental and Clinical Biochemical Sciences, University of Florence, Florence, Italy.
Felice PetragliaObstetrics and Gynaecology Unit, Department of Experimental and Clinical Biomedical Sciences, University of Florence, Florence, Italy.
Mariarosaria Di TommasoObstetrics and Gynaecology Unit, Department of Health Sciences, University of Florence, Florence, Italy.ORCID 0000-0001-8248-929X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo establish pregnancy-specific reference ranges for fasting and postprandial total serum bile acid (TSBA) concentrations.

designCross-sectional study.

settingTertiary-care university hospital. POPULATION: Healthy pregnant women at term admitted to the Obstetrics Department over a period of 1 year. Exclusion criteria were an established diagnosis of intrahepatic cholestasis of pregnancy (ICP) or any coexisting condition of increased risk for ICP.

methodsBoth fasting (after 8-14 h of fasting) and postprandial (2 h after meal) TSBA concentrations were measured in 612 women (with 528 fasting samples and 377 postprandial samples) by automated enzymatic spectrophotometric assay.

main outcome measuresFasting and postprandial TSBA concentrations in 612 women.

resultsReference intervals of 4.4-14.1 μmol/L for fasting TSBA and 4.7-20.2 μmol/L for postprandial TSBA were established. The postprandial values were significantly higher than the fasting values, with a median increase of 1.0 μmol/L (p < 0.0001). A correlation between fasting TSBA concentrations and postprandial concentrations was found, as well as correlations with fetal sex, parity and assisted reproductive technologies. A seasonal pattern was noticed for both fasting and postprandial TSBA, with the highest values measured in the winter season (p < 0.01 and 0.02, respectively)

conclusionsNormal pregnancy is associated with mild hypercholanaemia, and therefore a higher threshold should be considered for the diagnosis of ICP. We suggest using the upper reference limits observed in our healthy pregnant population (14 μmol/L for fasting TSBA and 20 μmol/L for postprandial TSBA). As the fasting measurement is more specific for the diagnosis, and the postprandial measurement is essential for the assessment of severity, it is recommended to measure both values rather than use random sampling. TWEETABLE ABSTRACT: Normal pregnancy is associated with mild hypercholanaemia, a higher threshold should be considered for the diagnosis of ICP.

Indexed as

Cholestasis, IntrahepaticPregnancy ComplicationsBile Acids and SaltsCross-Sectional StudiesFemaleHumansPregnancyReference ValuesBile Acids and Saltsdiagnostic thresholdsintrahepatic cholestasis of pregnancyreference rangestotal serum bile acids

Identifiers

PMID35373886
PMCPMC9543426

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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.