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Fetal Station

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1. Increased diagnostic accuracy of fetal head station by use of transabdominal ultrasound. (PubMed)

Increased diagnostic accuracy of fetal head station by use of transabdominal ultrasound. 30597530 2019 01 21 1600-0412 2018 Dec 30 Acta obstetricia et gynecologica Scandinavica Acta Obstet Gynecol Scand Increased diagnostic accuracy of fetal head station by use of transabdominal ultrasound. 10.1111/aogs.13529 Iversen Johanne K JK https://orcid.org/0000-0001-5935-2076 Department of Obstetrics and Gynecology, Oslo University Hospital, Oslo, Norway. Institute of Clinical Medicine, University (...) of Oslo, Oslo, Norway. Eggebø Torbjørn M TM https://orcid.org/0000-0002-3162-9595 Center for Fetal Medicine, Trondheim University Hospital (St Olavs Hospital), Trondheim, Norway. Institute of Clinical and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway. eng Letter 2018 12 30 United States Acta Obstet Gynecol Scand 0370343 0001-6349 2019 1 1 6 0 2019 1 1 6 0 2019 1 1 6 0 aheadofprint 30597530 10.1111/aogs.13529

2018 Acta Obstetricia et Gynecologica Scandinavica

2. Pelvic Floor Disorders 6 Months after Attempted Operative Vaginal Delivery According to the Fetal Head Station: A Prospective Cohort Study. (PubMed)

Pelvic Floor Disorders 6 Months after Attempted Operative Vaginal Delivery According to the Fetal Head Station: A Prospective Cohort Study. To evaluate the effect of the fetal head station at attempted operative vaginal delivery (aOVD), and specifically midpelvic or low aOVD, on urinary incontinence (UI), anal incontinence (AI), and perineal pain at 6 months.Prospective cohort study.1941 women with singleton term fetuses in vertex presentation with midpelvic or low aOVD between 2008 and 2013

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2016 PLoS ONE

3. Predicting the Difficulty of Operative Vaginal Delivery By Ultrasound Measurement of Fetal Head Station. (PubMed)

Predicting the Difficulty of Operative Vaginal Delivery By Ultrasound Measurement of Fetal Head Station. Clinical assessment of fetal head station is difficult and subjective; it is mandatory before attempting operative vaginal delivery.The principal objective of our study was to assess whether measurement of the perineum-to-skull ultrasound distance was predictive of a difficult operative vaginal delivery. Secondary objectives included evaluation of the interobserver reproducibility (...) distance was measured prior to operative vaginal delivery, 120 (18%) met the composite criterion for a difficult extraction. Perineum-to-skull ultrasound distance measurement of ≥40 mm was significantly associated with the occurrence of a difficult extraction based on the composite criterion, after adjustment for parity, presentation type, and fetal macrosomia (odds ratio, 2.38; 95% confidence interval, 1.51-3.74; P = .0002). The intraclass correlation coefficient between the perineum-to-skull

2017 American Journal of Obstetrics and Gynecology

4. Fetal Station

Fetal Station Fetal Station Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Fetal Station Fetal Station Aka: Fetal Station , Fetal (...) Descent From Related Chapters II. Definition: Fetal Station Zero Station Notation (presenting part level) Presenting part in relation to ischial spines Reported in centimeters from ischial spines Negative numbers are behind the ischial spines Engagement Refers to presenting part meeting pelvic floor Occurs at 0 station III. Step 1: Fetal Descent Fetal head position on abdominal palpation Head fixed: 3/5 palpable abdominally Head engaged: 2/5 palpable abdominally change position (towards ) IV. Step 2

2018 FP Notebook

5. Perinatal and maternal morbidity and mortality after attempted operative vaginal delivery at midpelvic station (PubMed)

Perinatal and maternal morbidity and mortality after attempted operative vaginal delivery at midpelvic station Increased use of operative vaginal delivery (i.e., forceps or vacuum application), of which 20% occurs at midpelvic station, has been advocated to reduce the rate of cesarean delivery. We aimed to quantify severe perinatal and maternal morbidity and mortality associated with attempted midpelvic operative vaginal delivery.We studied all term singleton deliveries in Canada between 2003 (...) not significantly different after operative vaginal delivery, although rates of obstetric trauma were higher (forceps, AOR 4.51, 95% CI 4.04 to 5.02; vacuum, AOR 2.70, 95% CI 2.35 to 3.09; sequential instruments, AOR 4.24, 95% CI 3.46 to 5.19). Among women with fetal distress, similar associations were seen for severe birth trauma and obstetric trauma, although vacuum was associated with lower rates of severe maternal morbidity and mortality (AOR 0.52, 95% CI 0.33 to 0.80). Associations tended to be stronger

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2017 EvidenceUpdates

6. Maternal and Neonatal Morbidity After Attempted Operative Vaginal Delivery According to Fetal Head Station. (PubMed)

Maternal and Neonatal Morbidity After Attempted Operative Vaginal Delivery According to Fetal Head Station. To compare severe short-term maternal and neonatal morbidity associated with midpelvic and low pelvic attempted operative vaginal delivery.Prospective study of 2,138 women with live singleton term fetuses in vertex presentation who underwent an attempted operative vaginal delivery in a tertiary care university hospital. We used multivariate logistic regression and propensity score methods

2015 Obstetrics and Gynecology

7. Descent of the Fetal Head (Station) During the First Stage of Labor. (PubMed)

Descent of the Fetal Head (Station) During the First Stage of Labor. High station at specific points in the first stage of labor, such as a floating head on admission, or at 4-cm dilation or when arrest of dilation occurs, is associated with higher rates of failure to deliver vaginally. Therefore it could be useful to know if station is within an expected range at a given dilation during first stage. Arrest of descent disorders have been defined thus far on criteria applicable in the second (...) stage. Statistical modeling is an attractive methodology to characterize the relationship between station and dilation because the resulting mathematical expressions could be used as a reference for comparison in the future. In addition, they can be used to produce a finely graded assessment of descent using numerical terms such as percentile rankings. A 2-step approach to potentially improving the assessment of station could be to develop a statistical model that describes the general relationship

2015 American Journal of Obstetrics and Gynecology

8. Who delivers in Occipito-Posterior? A multicentric prospective ultrasound-based measurements of fetal station and position throughout labor in a population of 595 women. (PubMed)

Who delivers in Occipito-Posterior? A multicentric prospective ultrasound-based measurements of fetal station and position throughout labor in a population of 595 women. To assess the relationship between fetal head position and head station during labor, as measured using an ultrasound-based system, and the occurrence of occiput posterior (OP) position at delivery.This was an international prospective observational study including women who delivered between January 2009 and September 2013 (...) in four centers: one in Brooklyn, NY, USA; one in Haifa, Israel; and two in Paris, France. We used an ultrasound-based system (LaborPro) to monitor fetal head station and position non-invasively throughout labor. We collected data on demographics, labor parameters and outcome.A total of 595 women were included. In 563 (94.6%) women, fetal head position at delivery was occiput anterior (OA), in 31 (5.2%) it was OP and in one (0.2%) it was occiput transverse. In 89% of pregnancies with intrapartum OP

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2015 Ultrasound in Obstetrics and Gynecology

9. Reducing Visitors- and Personnel-associated Infection Risk on Perinatal Care Station

Reducing Visitors- and Personnel-associated Infection Risk on Perinatal Care Station Reducing Visitors- and Personnel-associated Infection Risk on Perinatal Care Station - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before (...) adding more. Reducing Visitors- and Personnel-associated Infection Risk on Perinatal Care Station The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our for details. ClinicalTrials.gov Identifier: NCT03032887 Recruitment Status : Active, not recruiting First Posted : January 26, 2017 Last Update Posted : March 13, 2018 Sponsor: Martin-Luther-Universität

2017 Clinical Trials

10. The effectiveness of intrapartum  ultrasonography in assessing cervical dilatation, head station and position: A systematic review and meta-analysis. (PubMed)

intrapartum ultrasonography with digital VE in the determination of cervical dilatation, head station and position were then evaluated for the success rate and level of agreement between ultrasonography and digital VE. Ultrasonography had higher success rate than digital VE in the determination of fetal head position, with a statistically significant difference in the first stage of labour. Second, although the successful determination of cervical dilatation was in favour of digital VE, the difference (...) was not statistically significant. In addition, there was high agreement between ultrasound and digital VE findings on cervical dilatation. Lastly, a significant but moderate correlation between digital VE and ultrasound methods was found in the assessment of fetal head station. However, no meta-analysis could be done for the fetal head station due to the methodological differences between ultrasound anatomical landmarks and that of digital VE. The findings suggest that ultrasonography is superior to digital VE

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2016 Ultrasound (Leeds, England)

11. The fetal head-symphysis distance: a simple and reliable ultrasound index of fetal station in labor. (PubMed)

The fetal head-symphysis distance: a simple and reliable ultrasound index of fetal station in labor. To assess the reproducibility of measurement of a new sonographic index of fetal head station in labor, the fetal head-symphysis distance (HSD), using three-dimensional ultrasound, and its correlation with digital assessment of fetal head descent and with the angle of progression (AoP).Three-dimensional (3D) ultrasound volumes were acquired from 47 nulliparous women in active labor following (...) assessment of fetal head station with digital examination. The HSD (the distance between the lower edge of the pubic symphysis and the nearest point of the fetal skull) was measured independently by two operators in order to evaluate intra- and interobserver reproducibility. The correlation between HSD, AoP and fetal head station was evaluated using regression analysis. Using 3D tomographic ultrasound imaging (TUI), measurements of the HSD were obtained in different parasagittal planes to evaluate

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2012 Ultrasound in Obstetrics and Gynecology

12. The head progression distance in prolonged second stage of labor: relationship to mode of delivery and fetal head station. (PubMed)

The head progression distance in prolonged second stage of labor: relationship to mode of delivery and fetal head station. To evaluate the clinical significance of fetal head progression distance (HPD), measured by transperineal ultrasound, during prolonged second stage of labor.In this prospective study, a single operator, who was blinded to the results of the digital examination, assessed using transperineal ultrasound women at ≥ 37 weeks of gestation with failure to progress in the second (...) stage of labor. Patients had an empty urinary bladder and the examination was performed during maternal pushing. HPD was defined as the length of the line perpendicular to the infrapubic line that would connect it to the lowest part of the fetal bony skull. We analyzed associations between HPD and digital examination of fetal head station, fetomaternal characteristics, mode of delivery and perinatal outcome.Sixty-five patients in prolonged second stage of labor participated in the study. The overall

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2013 Ultrasound in Obstetrics and Gynecology

13. Comparison between ultrasound parameters and clinical examination to assess fetal head station in labor. (PubMed)

Comparison between ultrasound parameters and clinical examination to assess fetal head station in labor. Several ultrasound parameters, including intrapartum transperineal ultrasound (ITU) head station, angle of progression (AOP), head-perineum distance (HPD) and head-symphysis distance (HSD), have been suggested to assess fetal head station during labor. The aim of this study was to analyze the relationship between these ultrasound parameters and to compare them with digital palpation.We (...) between ITU head station and HPD (r = 0.71), between ITU head station and HSD (r = 0.74) and between HSD and HPD (r = 0.75). Palpated head station showed only moderate correlation with ITU head station (r = 0.52). Cervical dilatation showed a weak correlation with ITU head station (r = 0.30).The ultrasound parameters showed a high degree of correlation with each other, but only moderate correlation to vaginally palpated fetal head station.Copyright © 2013 ISUOG. Published by John Wiley & Sons, Ltd.

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2013 Ultrasound in Obstetrics and Gynecology

14. Fetal Station

Fetal Station Fetal Station Toggle navigation Brain Head & Neck Chest Endocrine Abdomen Musculoskeletal Skin Infectious Disease Hematology & Oncology Cohorts Diagnostics Emergency Findings Procedures Prevention & Management Pharmacy Resuscitation Trauma Emergency Procedures Ultrasound Cardiovascular Emergencies Lung Emergencies Infectious Disease Pediatrics Neurologic Emergencies Skin Exposure Miscellaneous Abuse Cancer Administration 4 Fetal Station Fetal Station Aka: Fetal Station , Fetal (...) Descent From Related Chapters II. Definition: Fetal Station Zero Station Notation (presenting part level) Presenting part in relation to ischial spines Reported in centimeters from ischial spines Negative numbers are behind the ischial spines Engagement Refers to presenting part meeting pelvic floor Occurs at 0 station III. Step 1: Fetal Descent Fetal head position on abdominal palpation Head fixed: 3/5 palpable abdominally Head engaged: 2/5 palpable abdominally change position (towards ) IV. Step 2

2015 FP Notebook

15. Risk factors for nonreassuring fetal heart rate tracings after artificial rupture of membranes in spontaneous labor. (PubMed)

with a decreased rate of nonreassuring FHR, while prolonged duration from AROM to delivery and oxytocin augmentation significantly increased the risk for nonreassuring FHR.Nonreassuring FHR after AROM during delivery is associated with parity, fetal station at AROM, birthweight, and oxytocin augmentation.© 2018 Wiley Periodicals, Inc. (...) Risk factors for nonreassuring fetal heart rate tracings after artificial rupture of membranes in spontaneous labor. We aimed to characterize factors associated with nonreassuring fetal heart (FHR) tracings after artificial rupture of membranes (AROM), during the active phase of labor.Delivery charts of patients who presented in spontaneous labor, at term, between 2015 and 2016 were reviewed. We identified cases in which AROM was performed during the active stage of labor. We compared

2018 Birth

16. Relationship between fetal head station established using an open magnetic resonance imaging scanner and the "angle of progression" determined by transperineal ultrasound. (PubMed)

Relationship between fetal head station established using an open magnetic resonance imaging scanner and the "angle of progression" determined by transperineal ultrasound. We investigated the correlation between the angle of progression measured by transperineal ultrasound and fetal head station measured by open magnetic resonance imaging (MRI), the gold standard, in pregnant women at full term.Thirty-one pregnant women at full term with a fetus in the occipitoanterior position were enrolled (...) + 60.8, r(2) = 0.38, P < 0.001). None of the fetal heads was engaged at the time of MRI and ultrasound examinations.The present study demonstrated a predictable relationship between the angle of progression obtained by transperineal ultrasound and the traditional scale used to quantify fetal head descent. Based on our results, station 0 would correspond to a 120° angle of progression. However, this correlation is based on statistical assumptions only and has to be proven in future studies.Copyright ©

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2011 Ultrasound in Obstetrics and Gynecology

17. Fetal head position and perineal distension associated with the use of the BD Odon Device™ in operative vaginal birth: a simulation study. (PubMed)

birth.The BD Odon Device was reliably sited in a standard over the fetal head position (approximately 40 mm above the fetal chin) for all stations, head sizes and positions with no significant displacement. In occipito-posterior births, compared with occipito-anterior or transverse, the BD Odon Device routinely sited further down the fetal head (toward the chin). The BD Odon Device was not associated with more perineal distension compared with forceps or Kiwi ventouse (respectively 21, 26 and 21 mm (...) Fetal head position and perineal distension associated with the use of the BD Odon Device™ in operative vaginal birth: a simulation study. To investigate (1) the placement of the BD Odon Device on the model fetal head and (2) perineal distention during simulated operative vaginal births conducted with the BD Odon Device.Observational simulation study.North Bristol NHS Trust, UK.Four hundred and forty simulated operative vaginal births.Three bespoke fetal mannequins were developed to represent

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2017 BJOG

18. Measurement of the Fetal Occiput-spine Angle During the First Stage of Labor as Predictor of the Outcome of Labor

to the ultrasound findings and the occiput-spine angle. For each patient of the study group, the progress of labor using a partogram ( cervical dilation ,effacement ,consistency, position and station ) and the mode of delivery were assessed retrospectively. Study Design Go to Layout table for study information Study Type : Observational Actual Enrollment : 400 participants Observational Model: Cohort Time Perspective: Prospective Official Title: Measurement of the Fetal Occiput-spine Angle During the First (...) Measurement of the Fetal Occiput-spine Angle During the First Stage of Labor as Predictor of the Outcome of Labor Measurement of the Fetal Occiput-spine Angle During the First Stage of Labor as Predictor of the Outcome of Labor - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved

2017 Clinical Trials

19. Prenatal Air Pollution Exposure and Ultrasound Measures of Fetal Growth in Los Angeles, California (PubMed)

Prenatal Air Pollution Exposure and Ultrasound Measures of Fetal Growth in Los Angeles, California Few previous studies examined the impact of prenatal air pollution exposures on fetal development based on ultrasound measures during pregnancy.In a prospective birth cohort of more than 500 women followed during 1993-1996 in Los Angeles, California, we examined how air pollution impacts fetal growth during pregnancy. Exposure to traffic related air pollution was estimated using CALINE4 air (...) dispersion modeling for nitrogen oxides (NOx) and a land use regression (LUR) model for nitrogen monoxide (NO), nitrogen dioxide (NO2) and NOx. Exposures to carbon monoxide (CO), NO2, ozone (O3) and particles <10μm in aerodynamic diameter (PM10) were estimated using government monitoring data. We employed a linear mixed effects model to estimate changes in fetal size at approximately 19, 29 and 37 weeks gestation based on ultrasound.Exposure to traffic-derived air pollution during 29 to 37 weeks

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2014 Environmental Research

20. Fetal Descent in Labor. (PubMed)

Fetal Descent in Labor. Studies using contemporary populations and modern statistical methods have redefined our understanding of cervical dilation in labor. However, modern norms for fetal descent in labor have not been developed. We sought to estimate norms for fetal descent and estimate the expected fetal station for given cervical dilations.A retrospective cohort study of consecutive-term, vertex singletons who delivered vaginally. Detailed history, labor, and delivery information (...) . Multiparous women had faster fetal descent at all stations except from +2 to +3 station. The median time to descend from one station point to another ranged from 0.1 to 1.6 hours, but the 95th percentiles encompassed over 12 hours at the same high-station among nulliparous women who achieved vaginal delivery. Fetal descent was more rapid in women who labored spontaneously without augmentation. Multiparous women tended to have a higher station than nulliparous women until late in the first

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2014 Obstetrics and Gynecology

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