ArticleActa obstetricia et gynecologica Scandinavica2026
An attempt to improve recognition of fetal acidemia by a remodeled intrapartum cardiotocography classification: A case-control study.
Article in Acta obstetricia et gynecologica Scandinavica, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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.
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.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors.
Funding
Abstract
introductionCurrent international (FIGO) and Swedish cardiotocography (CTG) interpretation templates exhibit limited diagnostic accuracy for the detection of fetal acidemia. The objective of this study was to develop a novel intrapartum CTG classification template incorporating CTG parameters demonstrated to be strongly associated with acidemia, and to evaluate the diagnostic performance of the models by assessing their sensitivity and specificity in identifying CTG recordings from neonates with acidemia. MATERIAL AND
methodsA retrospective case-control study based on 1092 births in Region Skåne. The study material included 364 cases with umbilical cord blood pH <7.05, or <7.10 after 1st stage cesarean, and 728 controls with pH ≥7.15 and Apgar scores ≥9 at 5 and 10 min. CTG patterns were systematically evaluated across a set of predefined variables, and associations between specific patterns and fetal acidemia were quantified using ORs. Two models defining pathological patterns were created: Model 1 based on the presence of one of several listed criteria resulting in a positive test and Model 2 also including the presence of ≥2 B-criteria resulting in a positive test. The main outcomes, sensitivity, and specificity to identify fetal acidemia at birth were calculated and compared with the current FIGO, NICE, and SWE guidelines.
resultsThe sensitivity to identify fetal acidemia was 86.3%, 86.5%, 50.8%, 57.1%, and 87.4% for Model 1, Model 2, FIGO, SWE, and NICE, respectively. The corresponding specificity was 77.9%, 76.4%, 92.6%, 91.2%, and 70.6%. The sensitivity to identify severe acidemia (pH <7.0) was 90.4% for Model 1 and for NICE; 64.4% for SWE, and 56.7% for FIGO. A variable not included in current classification systems, "fetal heart rate below baseline for >50% of the time during 30 minutes" was the criterion contributing most to the sensitivity.
conclusionsOur models show higher sensitivity but lower specificity for the defined outcome compared with SWE and FIGO, and similar sensitivity but higher specificity compared with NICE. Validating the model on a new material is essential before considering clinical use.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
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.