Effect of uterine contractions on fetal heart rate in pregnancy: a prospective observational study

2016 ◽  
Vol 95 (10) ◽  
pp. 1129-1135 ◽  
Author(s):  
Julie Sletten ◽  
Torvid Kiserud ◽  
Jörg Kessler
Keyword(s):  
Heart Rate ◽  
Observational Study ◽  
Fetal Heart Rate ◽  
Prospective Observational Study ◽  
Fetal Heart ◽  
Uterine Contractions ◽  
In Pregnancy

Differences between external and internal fetal heart rate monitoring during the second stage of labor: a prospective observational study

2014 ◽  
Vol 42 (4) ◽  
Author(s):  
Inês Nunes ◽  
Diogo Ayres-de-Campos ◽  
Cristina Costa-Santos ◽  
João Bernardes
Keyword(s):  
Heart Rate ◽  
Observational Study ◽  
Fetal Heart Rate ◽  
Prospective Observational Study ◽  
Fetal Heart ◽  
Signal Loss ◽  
Fetal Heart Rate Monitoring ◽  
Second Stage Of Labor ◽  
Second Stage ◽  
External Monitoring

AbstractTo compare fetal heart rate (FHR) signals acquired simultaneously by an external ultrasound probe and a scalp electrode during the second stage of labor.This was a prospective observational study in a labor ward of a tertiary care university hospital. The population was women in labor with uneventful singleton pregnancies at term. Simultaneous external and internal FHR monitoring was performed in 67 consecutively recruited women during the second stage of labor. Cases were subsequently excluded if the trace length was under 40 min, cesarean birth occurred, or the interval between trace-end and birth exceeded 5 min, leaving a total of 33 traces for analysis. The last 40–60 min of these traces were analyzed by a computer system (Omniview-SisPortoA higher signal loss was observed with external monitoring [10% vs. 4%; P<0.001, LoA=(–6, 18)]. No differences were found in mean FHR baseline [129 bpm vs. 130 bpm, P=0.245, LoA=(–15, 12)], but more accelerations [12 vs. 8, P<0.001, LoA=(–5, 13)] and less decelerations [8 vs. 10, P<0.001, LoA=(–8, 4)] were detected with external monitoring. With this method there were also more accelerations (66% vs. 55%, P=0.036) and less decelerations (68% vs. 81%, P=0.017) coinciding with contractions.External FHR monitoring during the second stage of labor results in higher signal loss, increased number of accelerations, and decreased number of decelerations when compared with internal monitoring.

scholarly journals Fetal heart rate monitoring of short term variation (STV): a methodological observational study

2016 ◽  
Vol 16 (1) ◽  
Author(s):  
Stina Wretler ◽  
Malin Holzmann ◽  
Sophie Graner ◽  
Pelle Lindqvist ◽  
Susanne Falck ◽  
...  
Keyword(s):  
Heart Rate ◽  
Observational Study ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Heart Rate Monitoring ◽  
Short Term ◽  
Fetal Heart Rate Monitoring ◽  
Term Variation

Prospective trial on obstructive sleep apnea in pregnancy and fetal heart rate monitoring

2010 ◽  
Vol 202 (6) ◽  
pp. 552.e1-552.e7 ◽  
Author(s):  
Sofia A. Olivarez ◽  
Bani Maheshwari ◽  
Meghan McCarthy ◽  
Nikolaos Zacharias ◽  
Ignatia van den Veyver ◽  
...  
Keyword(s):  
Heart Rate ◽  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Prospective Trial ◽  
Heart Rate Monitoring ◽  
Fetal Heart Rate Monitoring ◽  
Obstructive Sleep ◽  
In Pregnancy

The clinical interpretation and significance of electronic fetal heart rate patterns 2 h before delivery: an institutional observational study

2012 ◽  
Vol 286 (5) ◽  
pp. 1153-1159 ◽  
Author(s):  
Gianpaolo Maso ◽  
Caterina Businelli ◽  
Monica Piccoli ◽  
Marcella Montico ◽  
Francesco De Seta ◽  
...  
Keyword(s):  
Heart Rate ◽  
Observational Study ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Clinical Interpretation

scholarly journals Recognising Fetal Compromise in the Cardiograph during the Antenatal Period: Pearls and Pitfalls

2020 ◽  
pp. 72-83
Author(s):  
Susana Pereira ◽  
Caron Ingram ◽  
Neerja Gupta ◽  
Mandeep Singh ◽  
Edwin Chandraharan
Keyword(s):  
At Risk ◽  
Heart Rate ◽  
Neurological Disorders ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
International Guidelines ◽  
Antenatal Period ◽  
Uterine Contractions ◽  
Computerised Analysis ◽  
Fetal Compromise

There are several national and international guidelines to aid the interpretation of the cardiotocograph (CTG) trace during labour. These guidelines are based on assessing changes in the fetal heart rate (i.e. cardiograph) in response to mechanical and hypoxic stresses during labour secondary to ongoing frequency, duration and strength of uterine contractions (i.e. tocograph). However, during the antenatal period, uterine contractions are absent, and therefore, these intrapartum CTG guidelines cannot be used to reliably identify fetuses at risk of compromise. Computerised analysis of CTG using the Dawes-Redman Criteria could be used to detect fetal compromise. However, clinicians should be aware of the multiple pathways of fetal damage (i.e. inflammation, infection, intrauterine fetal stroke, chronic fetal anaemia, acute feto-maternal haemorrhage and fetal cardiac or neurological disorders) which can cause changes on the CTG trace which may not be recognised by using CTG guidelines.

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