Evidence map›Paper›PMID 42527548›Full record

ArticleJournal of perinatology : official journal of the California Perinatal Association2026

Prenatal biometry-based prediction of optimal endotracheal tube depth in infants with a birth weight less than 500 g.

Kyusang Yoo, Soo Hyun Kim, Juhee Park, Tae-Gyeong Kim, Jung Il Kwak, Jeong Min Lee, Ha Na Lee, Jiyoon Jeong, Chae Young Kim, Mi-Young Lee and 4 more

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Article in Journal of perinatology : official journal of the California Perinatal Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

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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

14 authors.

Kyusang YooDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.ORCID http://orcid.org/0009-0005-6952-961X
Soo Hyun KimDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea. soohyun@amc.seoul.kr.ORCID http://orcid.org/0000-0001-5920-7354
Juhee ParkDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Tae-Gyeong KimDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Jung Il KwakDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Jeong Min LeeDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Ha Na LeeDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.ORCID http://orcid.org/0000-0002-0217-1773
Jiyoon JeongDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Chae Young KimDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Mi-Young LeeDepartment of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Euiseok JungDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.ORCID http://orcid.org/0000-0003-0693-5627
Jin Hoon ChungDepartment of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Byong Sop LeeDepartment of Pediatrics, Asan Medical Center Children's Hospital, University of Ulsan College of Medicine, Seoul, Korea.
Hye-Sung WonDepartment of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo develop a prenatal biometry-based model predicting optimal oral endotracheal tube (ETT) depth in infants with birth weight <500 g. STUDY

designRetrospective single-center cohort of 62 infants (birth weight <500 g) orally intubated at birth, with prenatal ultrasound within 3 days of delivery. Optimal ETT depth was determined from post-intubation radiographs. Femur length (FL), estimated fetal weight (EFW), biparietal diameter, head circumference, and abdominal circumference were assessed by correlation and multivariable regression.

resultsGestational age was 25.2 ± 1.7 weeks; birth weight, 437 g (382.5-470 g). Malposition ≥0.5 cm occurred in 29 infants (46.8%). FL and EFW correlated strongly with optimal depth (r = 0.598 and 0.594; both p < 0.001). The quadratic model combining FL and EFW yielded the best fit (adjusted R² = 0.58).

conclusionPrenatal FL and EFW may guide predelivery oral ETT depth in infants with birth weight <500 g, supporting individualized airway planning.

Identifiers

PMID42527548

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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 Socratic graph.