Characteristics of Heart Rate Tracings in Preterm Fetus

Medicina

David Pérez-Melero¹  Andrea Pinto-Ibáñez²  Ernesto González-Mesa³  MariaF. Hurtado-Sánchez⁴  Juan Mozas-Moreno⁴  Alberto Puertas-Prieto⁴ 

[1] Anesthesiology, Resuscitation and Pain Therapy Service, Virgen de las Nieves University Hospital, 18014 Granada, Spain;Obstetrics and Gynecology Service, Poniente Hospital, 04700 El Ejido (Almería), Spain;Obstetrics and Gynecology Service, Regional University Hospital of Malaga, 29011 Malaga, Spain;Obstetrics and Gynecology Service, Virgen de las Nieves University Hospital, 18014 Granada, Spain;

关键词: fetal heart rate;    preterm fetus;    cardiotocography;    fetal heart rate patterns;    electronic fetal monitoring;   

DOI  :  10.3390/medicina57060528

来源: DOAJ

【 摘 要 】

Background and Objectives: Prematurity is currently a serious public health issue worldwide, because of its high associated morbidity and mortality. Optimizing the management of these pregnancies is of high priority to improve perinatal outcomes. One tool frequently used to determine the degree of fetal wellbeing is cardiotocography (CTG). A review of the available literature on fetal heart rate (FHR) monitoring in preterm fetuses shows that studies are scarce, and the evidence thus far is unclear. The lack of reference standards for CTG patterns in preterm fetuses can lead to misinterpretation of the changes observed in electronic fetal monitoring (EFM). The aims of this narrative review were to summarize the most relevant concepts in the field of CTG interpretation in preterm fetuses, and to provide a practical approach that can be useful in clinical practice. Materials and Methods: A MEDLINE search was carried out, and the published articles thus identified were reviewed. Results: Compared to term fetuses, preterm fetuses have a slightly higher baseline FHR. Heart rate is faster in more immature fetuses, and variability is lower and increases in more mature fetuses. Transitory, low-amplitude decelerations are more frequent during the second trimester. Transitory increases in FHR are less frequent and become more frequent and increase in amplitude as gestational age increases. Conclusions: The main characteristics of FHR tracings changes as gestation proceeds, and it is of fundamental importance to be aware of these changes in order to correctly interpret CTG patterns in preterm fetuses.

【 授权许可】

Unknown