Evaluation of fetal acidemia during delivery using the conventional 5-tier classification and Rainbow systems

The association between prepartum time-series fetal heart rate pattern changes and cord blood gas data at delivery was examined using the conventional 5-tier classification and the Rainbow system for 229 female patients who delivered vaginally. They were classified into three groups based on the res...

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Bibliographic Details
Published in:PloS one 2023-06, Vol.18 (6), p.e0287535-e0287535
Main Authors: Magawa, Shoichi, Maki, Shintaro, Nii, Masafumi, Yamaguchi, Mizuki, Tamaishi, Yuya, Enomoto, Naosuke, Takakura, Sho, Toriyabe, Kuniaki, Kondo, Eiji, Ikeda, Tomoaki
Format: Article
Language:English
Subjects:
Acidosis
Analysis
Apgar score
Biology and Life Sciences
Blood
Blood gas analysis
Cardiovascular disease
Childbirth
Childbirth & labor
Classification
Complications and side effects
Cord blood
Evaluation
Female
Fetal Blood
Fetal Diseases
Fetal heart rate monitoring
Fetuses
Gas analysis
Heart
Heart beat
Heart rate
Heart Rate, Fetal - physiology
Hospitals
Humans
Hydrogen-Ion Concentration
Hypoxia
Induced labor
Medicine and Health Sciences
Newborn babies
Patient outcomes
Pattern classification
Physical Sciences
Pregnancy
Rainbows
Reading
Time Factors
Umbilical Cord
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Summary:The association between prepartum time-series fetal heart rate pattern changes and cord blood gas data at delivery was examined using the conventional 5-tier classification and the Rainbow system for 229 female patients who delivered vaginally. They were classified into three groups based on the results of umbilical cord blood gas analysis at delivery. The fetal heart rate pattern classifications were based on analysis of measurement taken at 10-min intervals, beginning at 120 min pre-delivery. The relationship between fetal heart rate pattern classification and cord blood pH at delivery changed over time. The 5-tier classification at each interval increased before delivery in the Mild and Severe groups compared with the Normal group. No significant differences were observed between acidemia groups. The Rainbow classification showed a significant differences between the acidemia groups at each interval, particularly during the prepartum period. A relationship between classification and outcome was evident before delivery for both the 5-tier classification and Rainbow system.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0287535