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Increased variability of fetal heart rate during labour: a review of preclinical and clinical studies
Author(s) -
Tarvonen Mikko J.,
Lear Christopher A.,
Andersson Sture,
Gunn Alistair J.,
Teramo Kari A.
Publication year - 2022
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/1471-0528.17234
Subject(s) - medicine , fetus , intensive care medicine , clinical significance , fetal heart rate , limiting , expert opinion , stage (stratigraphy) , pathophysiology , pregnancy , heart rate , blood pressure , biology , mechanical engineering , paleontology , genetics , engineering
Increased fetal heart rate variability (FHRV) in intrapartum cardiotocographic recording has been variably defined and poorly understood, limiting its clinical utility. Both preclinical (animal) and clinical (human) evidence support that increased FHRV is observed in the early stage of intrapartum fetal hypoxaemia but can also be observed in a subset of fetuses during the preterminal stage of repeated hypoxaemia. This review of available evidence provides data and expert opinion on the pathophysiology of increased FHRV, its clinical significance and a stepwise approach regarding the management of this pattern, and propose recommendations for standardisation of related terminology.