scholarly journals Intrapartum fetal scalp lactate sampling for fetal assessment in the presence of a non-reassuring fetal heart rate trace

2006 ◽  
Author(s):  
Christine E East ◽  
Leo R Leader ◽  
Paul B Colditz ◽  
Naomi E Henshall
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Scalp

scholarly journals Extraction of Fetal Heart Rate from Maternal ECG—Non Invasive Approach for Continuous Monitoring during Labor

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 1009 ◽  
Author(s):  
Tashreque Mohammed Haq ◽  
Safkat Arefin ◽  
Shamiur Rahman ◽  
Tanzilur Rahman
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Continuous Monitoring ◽  
Good Accuracy ◽  
Fetal Heart ◽  
Signal Separation ◽  
Invasive Approach ◽  
Non Invasive ◽  
Proposed Model ◽  
Fetal Scalp

Here, we propose a signal processing based approach for the extraction of the fetal heart rate (FHR) from Maternal Abdominal ECG (MAECG) in a non-invasive way. Datasets from a Physionet database has been used in this study for evaluating the performance of the proposed model that performs three major tasks; preprocessing of the MAECG signal, separation of Fetal QRS complexes from that of maternal and estimation of Fetal R peak positions. The MAECG signal is first preprocessed with improved multistep filtering techniques to detect the Maternal QRS (MQRS) complexes, which are dominant in the MAECG. A reference template is then reconstructed based on MQRS locations and removed from the preprocessed signal resulting in the raw FECG. This extracted FECG is further corrected and enhanced before obtaining the Fetal R peaks. The detection of FQRS and calculation of FHR has been compared against the reference Fetal Scalp ECG. Results indicate that the approach achieved good accuracy.

scholarly journals Intrapartum fetal scalp lactate sampling for fetal assessment in the presence of a non-reassuring fetal heart rate trace

2010 ◽  
Author(s):  
Christine E East ◽  
Leo R Leader ◽  
Penelope Sheehan ◽  
Naomi E Henshall ◽  
Paul B Colditz
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Scalp

Do spectral bands of fetal heart rate variability associate with concomitant fetal scalp pH?

2013 ◽  
Vol 89 (9) ◽  
pp. 739-742 ◽  
Author(s):  
Saila M. Siira ◽  
Tiina H. Ojala ◽  
Tero J. Vahlberg ◽  
Karl G. Rosén ◽  
Eeva M. Ekholm
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Spectral Bands ◽  
Fetal Scalp ◽  
Fetal Heart Rate Variability

Application of a fetal scalp electrode for continuous fetal heart rate monitoring during an ex utero intrapartum treatment

2011 ◽  
Vol 46 (2) ◽  
pp. e37-e40 ◽  
Author(s):  
Masatoki Kaneko ◽  
Shunichi Tokunaga ◽  
Motoi Mukai ◽  
Seirou Machigashira ◽  
Youhei Maki ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Heart Rate Monitoring ◽  
Fetal Heart Rate Monitoring ◽  
Scalp Electrode ◽  
Ex Utero Intrapartum Treatment ◽  
Fetal Scalp

Classification of fetal heart rate in relation to fetal scalp blood measurements and Apgar score

1969 ◽  
Vol 105 (6) ◽  
pp. 942-948 ◽  
Author(s):  
Carl Wood ◽  
Warwick Newman ◽  
Judith Lumley ◽  
Judith Hammond
Keyword(s):  
Heart Rate ◽  
Apgar Score ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Scalp

The Diagnostic Ability of the Cerebroplacental Ratio for the Prediction of Adverse Perinatal Outcome and Intrapartum Fetal Compromise within One Day of Delivery

2021 ◽  
pp. 1-10
Author(s):  
José Morales-Roselló ◽  
Gabriela Loscalzo ◽  
Vaidilė Jakaitė ◽  
Alfredo Perales Marín
Keyword(s):  
Heart Rate ◽  
Cesarean Section ◽  
Fetal Heart Rate ◽  
Perinatal Outcome ◽  
Fetal Heart ◽  
Diagnostic Ability ◽  
Adverse Perinatal Outcome ◽  
Cerebroplacental Ratio ◽  
Fetal Scalp ◽  
Fetal Compromise

<b><i>Objectives:</i></b> The objectives of this study were to evaluate the diagnostic abilities of the cerebroplacental ratio (CPR) for the prediction of adverse perinatal outcome (APO) and cesarean section for intrapartum fetal compromise (CS-IFC) within 1 day of delivery. <b><i>Design:</i></b> Retrospective observational case-control study. <b><i>Methods:</i></b> This was a study of 254 high-risk fetuses attending the day hospital unit of a tertiary referral hospital that underwent an ultrasound examination at 32–41 weeks and gave birth within 1 day of examination. APO was defined as a composite of abnormal intrapartum fetal heart rate or intrapartum fetal scalp pH &#x3c;7.20 requiring urgent cesarean section, neonatal umbilical cord pH &#x3c;7.10, 5-min Apgar score &#x3c;7, and postpartum admission to neonatal or pediatric intensive care units. CS-IFC was defined in case of abnormal intrapartum fetal heart rate or intrapartum fetal scalp pH &#x3c;7.20 requiring urgent cesarean section. The diagnostic ability of CPR for the prediction of APO and CS-IFC was calculated alone and in combination with estimated fetal weight and gestational clinical parameters, including the type of labor onset, using ROC curves and logistic regression analysis. <b><i>Results:</i></b> CPR in multiples of the median (MoM) was a moderate predictor of APO (area under the curve [AUC] = 0.77, <i>p</i> &#x3c; 0.0001) and CS-IFC (AUC = 0.82, <i>p</i> &#x3c; 0.0001). The predictive abilities of the multivariable model for APO (AUC = 0.81, <i>p</i> &#x3c; 0.0001) and CS-IFC (AUC = 0.82, <i>p</i> &#x3c; 0.0001) did not differ from those of CPR alone . <b><i>Limitations:</i></b> The small number of cases and the scarcity of information concerning labor induction. <b><i>Conclusion:</i></b> In high-risk pregnancies, CPR MoM is a moderate predictor of APO and CS-IFC when performed within 24 h of delivery.

scholarly journals Intrapartum fetal scalp lactate sampling for fetal assessment in the presence of a non-reassuring fetal heart rate trace

2015 ◽  
Author(s):  
Christine E East ◽  
Leo R Leader ◽  
Penelope Sheehan ◽  
Naomi E Henshall ◽  
Paul B Colditz ◽  
...  
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Fetal Scalp

scholarly journals Linear Phase Sharp Transition BPF to Detect Noninvasive Maternal and Fetal Heart Rate

2018 ◽  
Vol 2018 ◽  
pp. 1-14 ◽  
Author(s):  
Niyan Marchon ◽  
Gourish Naik ◽  
K. R. Pai
Keyword(s):  
Heart Rate ◽  
Fetal Heart Rate ◽  
Fetal Heart ◽  
Well Being ◽  
Variable Order ◽  
Band Pass Filter ◽  
Linear Phase ◽  
Sharp Transition ◽  
Pass Filter ◽  
Fetal Scalp

Fetal heart rate (FHR) detection can be monitored using either direct fetal scalp electrode recording (invasive) or by indirect noninvasive technique. Weeks before delivery, the invasive method poses a risk factor to the fetus, while the latter provides accurate fetal ECG (FECG) information which can help diagnose fetal’s well-being. Our technique employs variable order linear phase sharp transition (LPST) FIR band-pass filter which shows improved stopband attenuation at higher filter orders. The fetal frequency fiduciary edges form the band edges of the filter characterized by varying amounts of overlap of maternal ECG (MECG) spectrum. The one with the minimum maternal spectrum overlap was found to be optimum with no power line interference and maximum fetal heart beats being detected. The improved filtering is reflected in the enhancement of the performance of the fetal QRS detector (FQRS). The improvement has also occurred in fetal heart rate obtained using our algorithm which is in close agreement with the true reference (i.e., invasive fetal scalp ECG). The performance parameters of the FQRS detector such as sensitivity (Se), positive predictive value (PPV), and accuracy (F1) were found to improve even for lower filter order. The same technique was extended to evaluate maternal QRS detector (MQRS) and found to yield satisfactory maternal heart rate (MHR) results.

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