Preterm Nonstress Testing

Glantz, J. Christopher; Bertoia, Natalie

doi:10.1097/aog.0b013e31821d85e5

Cited by 12 publications

(2 citation statements)

References 13 publications

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“…However, the statistical significance was insufficient to confirm the safety of using the 10 × 10 criterion before 32 weeks of gestation. Another study of 488 pregnancies [ 24 ] used EFM to compare the relationship of the 10 × 10 vs. 15 × 15 evaluation criteria for FHR accelerations with perinatal outcomes. This analysis of 7100 CTG tracings found no association between either reactivity criterion and perinatal outcomes in terms of perinatal mortality, need for neonatal resuscitation, 5-mintute Apgar score less than 7, mechanical ventilation, or intraventricular hemorrhage.…”

Section: Resultsmentioning

confidence: 99%

Characteristics of Heart Rate Tracings in Preterm Fetus

et al. 2021

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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.

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Section: Resultsmentioning

confidence: 99%

Characteristics of Heart Rate Tracings in Preterm Fetus

et al. 2021

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“…The NST of the normal preterm fetus is frequently nonreactive: from 24 weeks to 28 weeks of gestation, up to 50% of NSTs may not be reactive (26), and from 28 weeks to 32 weeks of gestation, 15% of NSTs are not reactive (17,27,28). Thus, the predictive value of NSTs based on a lower threshold for accelerations (at least 10 beats per minute above the baseline and at least 10 seconds from baseline to baseline) has been evaluated in pregnancies at less than 32 weeks of gestation and has been found to sufficiently predict fetal well-being (29,30). Variable decelerations may be observed in up to 50% of NSTs (31).…”

Section: Nonstress Testmentioning

confidence: 99%

Antepartum Fetal Surveillance

2021

Obstetrics &Amp; Gynecology

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The goal of antepartum fetal surveillance is to reduce the risk of stillbirth. Antepartum fetal surveillance techniques based on assessment of fetal heart rate (FHR) patterns have been in clinical use for almost four decades and are used along with real-time ultrasonography and umbilical artery Doppler velocimetry to evaluate fetal well-being. Antepartum fetal surveillance techniques are routinely used to assess the risk of fetal death in pregnancies complicated by preexisting maternal conditions (eg, diabetes mellitus) as well as those in which complications have developed (eg, fetal growth restriction). The purpose of this document is to provide a review of the current indications for and techniques of antepartum fetal surveillance and outline management guidelines for antepartum fetal surveillance that are consistent with the best scientific evidence.

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Laboratory Screening and Diagnostic Testing in Antepartum Care

Bargad

VogtSchaller²

2022

Pediatric Diagnostic Labs for Primary Care: An Evidence-Based Approach

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Preterm Nonstress Testing

Cited by 12 publications

References 13 publications

Characteristics of Heart Rate Tracings in Preterm Fetus

Characteristics of Heart Rate Tracings in Preterm Fetus

Antepartum Fetal Surveillance

Laboratory Screening and Diagnostic Testing in Antepartum Care

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