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Amniotic fluid index assessment

Dawn S Hughes, Everett F Magann
The evaluation of amniotic fluid volume (AFV) is an established part of the antenatal surveillance of pregnancies at risk for an adverse pregnancy outcome. The two most commonly used ultrasound techniques to estimate AFV are the amniotic fluid index (AFI) and the single deepest pocket (SDP). Four studies have defined normal AFVs, and although their normal volumes have similarities, there are also differences primarily due to the statistical methodology used in each study. Dye-determined AFV correlates with ultrasound estimates for normal fluid volumes but correlates poorly for oligohydramnios and polyhydramnios...
September 16, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
Nabih I El Khouly, Osama A Elkelani, Said A Saleh
OBJECTIVE: The purpose of this study was to assess the value of combining the estimated fetal weight (EFW) and amniotic fluid index (AFI) measured in term patients early in labor with intact membranes for prediction of macrosomia. METHODS: In a single center, prospective observational study, 600 patients in the first stage of labor before rupture of membranes in whom ultrasonography was performed to measure AFI and EFW, and these data were analyzed statistically to evaluate prediction of fetal macrosomia...
September 22, 2016: Journal of Maternal-fetal & Neonatal Medicine
Emeka John Agwu, Anthony C Ugwu, Samuel L Shem, Muhammed Abba
BACKGROUND: Amniotic fluid (AF) is one of the major determinants of fetal biophysical profile and can predict pregnancy outcome. Abnormal value of amniotic fluid index (AFI) may indicate fetal and maternal disorders. PURPOSE: To establish reference standards for AFI for this population after 28 weeks of pregnancy and evaluate the relationship between AFI, the estimated fetal weight (EFWT), and fetal gender. MATERIAL AND METHODS: A prospective cross-sectional estimation of AFI and FWT was done in 385 apparently healthy pregnant women in the gestational age range of 28-42 weeks...
August 2016: Acta Radiologica Open
Alberto Borges Peixoto, Taciana Mara Rodrigues da Cunha Caldas, Tácito Augusto Godoy Silva, Mário Sérgio Silva Gomes Caetano, Wellington P Martins, Eduardo Felix Martins Santana, Edward Araujo Júnior
OBJECTIVES: The aim of the study was to investigate ultrasound and Doppler parameters in the third trimester of pregnancy as possible predictors of adverse perinatal outcome in unselected pregnancies. MATERIAL AND METHODS: We performed a retrospective cross-sectional study including unselected pregnant women be-tween 27 and 36 + 6 weeks of gestation. The following ultrasound and Doppler parameters were assessed: estimated fetal weight (EFW) [g], EFW percentile, placental maturity grade (Grannum classification), single vertical deepest pocket (SVDP) of amniotic fluid [cm], amniotic fluid index (AFI) [cm], mean uterine artery (UtA) pulsatility index (PI), umbilical artery (UA) PI, middle cerebral artery (MCA) PI, MCA peak systolic velocity (PSV) [cm/s], and cerebroplacental ratio (CPR)...
2016: Ginekologia Polska
Ji Ye Kim, Ji Yeon You, Kylie Hae-Jin Chang, Suk-Joo Choi, Soo-Young Oh, Jeong-Meen Seo, Cheong-Rae Roh, Jong-Hwa Kim
OBJECTIVES: The purpose of this study was to evaluate the association of prenatal sonographic findings with adverse outcomes and the causes of duodenal obstruction. METHODS: A total of 59 cases of congenital duodenal obstruction were included in this study. The sonographic findings, including the degree of duodenal dilatation, polyhydramnios, and their change over gestation, were investigated. Adverse outcomes were defined as fetal death in utero, postnatal death, and gastrointestinal complications requiring readmission or reoperation during the follow-up period...
September 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Warwick B Dunn, J William Allwood, Tim Van Mieghem, R Katie Morris, Fiona L Mackie, Caroline E Fox, Mark D Kilby
INTRODUCTION: Twin-twin transfusion syndrome (TTTS) complicates 15% of monochorionic twin pregnancies, often being associated with recipient cardiac dysfunction. Untreated, it has a fetal mortality rate of at least 90%; although treatment by fetoscopic laser coagulation significantly improves prognosis. Measurement of recipient amniotic fluid metabolites, such as cardiac Troponin T and atrial natriuretic polypeptide, correlate with cardiac function in this fetus. The aim of this study is to describe the amniotic fluid metabolomic profile in TTTS, relate this to fetal recipient cardiac function and assess the metabolomic changes induced by fetoscopic laser coagulation...
August 2016: Placenta
Ismail Burak Gultekin, Orhan Altınboga, Ertugrul Karahanoglu, Nihan Guneri Dogan, Bilal Icer, Afra Alkan, Tuncay Kucukozkan
OBJECTIVE: To analyse the change in cardiac axis with advancing gestational age and the factors that may affect it. METHODS: 45 healthy pregnant women in 20th weeks of gestation were enrolled to the study. The cardiac axis was noted for each participant. The same group was once more assessed at term and the change in cardiac axis was calculated with the difference of cardiac axis at term and the 20th gestational weeks. Change in cardiac axis with advancing gestational weeks and factors that may affect it such as amniotic fluid index (AFI), estimated fetal weight (EFW) at term, actual birth weight and presentation of the fetus at term were evaluated...
July 2016: Journal of Electrocardiology
N J Hilliard, R Hawkes, A J Patterson, M J Graves, A N Priest, S Hunter, C Lees, P A Set, D J Lomas
OBJECTIVES: This work evaluates rapid magnetic resonance projection hydrography (PH) based amniotic fluid volume (AFV) estimates against established routine ultrasound single deepest vertical pocket (SDVP) and amniotic fluid index (AFI) measurements, in utero at 28-32 weeks gestation. Manual multi-section planimetry (MSP) based measurement of AFV is used as a proxy reference standard. METHODS: Thirty-five women with a healthy singleton pregnancy (20-41 years) attending routine antenatal ultrasound were recruited...
October 2016: European Radiology
Shalini S Nayak, Anju Shukla, Sreelakshmi Kodandapani, Prashanth K Adiga, Katta M Girisha
OBJECTIVE: We aimed to determine the value of autopsy in fetuses with antenatally diagnosed oligohydramnios. PATIENTS AND METHODS: We evaluated all fetal losses over a period of 6.5 years. Those with oligohydramnios on antenatal scan were critically analyzed. Oligohydramnios was defined as amniotic fluid index of less than five objectively or as an obvious lack of liquor at subjective assessment. A detailed postmortem examination was carried out in all the fetuses after obtaining an informed consent...
2016: Journal of Maternal-fetal & Neonatal Medicine
Arrigo Fruscalzo, Ambrogio P Londero, Jessica Biasizzo, Francesco Curcio, Serena Bertozzi, Diego Marchesoni, Lorenza Driul
OBJECTIVE: To study the adipokines concentration and glucose homoeostasis in the early-second trimester of women who will develop gestational diabetes mellitus (GDM). MATERIALS AND METHODS: Maternal plasma and fetal amniotic fluid samples were prospectively collected between 2006 and 2007 at the time of mid-trimester amniocentesis. Eight patients found to be affected by GDM were compared with 10 control patients with a normal pregnancy course. Adipokines leptin and adiponectin, as well as insulin and glucose concentration both in amniotic fluid and maternal plasma were compared between cases and controls...
2015: Gynecological Endocrinology
Camilla O Figueira, Fernanda G Surita, Márcia S J Dertkigil, Simiran L Pereira, João R Bennini, Sirlei S Morais, José G Cecatti
OBJECTIVE: To establish longitudinal reference intervals for pulsatility index (PI) and systolic velocity (SV) of the fetal renal artery, and to evaluate their correlation with the amniotic fluid index (AFI). METHODS: A prospective longitudinal study was conducted among women with low-risk pregnancies who attended outpatient clinics at the University of Campinas Medical School, Brazil, at 16-19 weeks of pregnancy between April 1, 2008, and March 31, 2010. Doppler velocimetric measurements of the fetal renal artery and assessments of the AFI were undertaken at 4-week intervals to 36 weeks, and every 2 weeks thereafter until delivery...
October 2015: International Journal of Gynaecology and Obstetrics
Silvia Visentin, Ambrogio Pietro Londero, Beatrice Bellamio, Grazia Giunta, Chiara Cosma, Diego Faggian, Mario Plebani, Erich Cosmi
BACKGROUND: Recent studies reveal that offspring of pregnancies complicated by hypertensive disorders may have an increased cardiovascular risk. Genetic and nongenetic factors seem to play an important role in premature arterial disease. Endothelium may be significant for long-term remodeling of the arterial wall. The aim of the study was to assess fetal endothelial and renal function in late-onset gestational hypertension. MATERIALS AND METHODS: This was a case-controlled study...
February 2016: American Journal of Hypertension
S M Van Kuijk, D H Delahaije, L L Peeters, C D Dirksen, H C Scheepers, L Smits
INTRODUCTION: Women with a history of early-onset preeclampsia, requiring delivery before 34 weeks of gestation, often receive intensive surveillance with far more visits than routine antenatal care, additional testing such as the serial measurement of various fetal arterial Doppler blood flow velocity profiles, repetitive assessment of the fetal biometry, the amount of amniotic fluid, the fetal biophysical profile, and repetitive blood testing. Yet, recurrence risk is generally low. OBJECTIVES: To develop and validate a prepregnant prediction model to identify women at very low risk of recurrence of early-onset preeclampsia...
July 2012: Pregnancy Hypertension
Chun-Jung Chen, Fu-Chou Cheng, Hong-Lin Su, Meei-Ling Sheu, Zong-Han Lu, Chien-Yi Chiang, Dar-Yu Yang, Jason Sheehan, Hung-Chuan Pan
PURPOSE: The skeletal muscle develops various degrees of atrophy and metabolic dysfunction following nerve injury. Neurotrophic factors are essential for muscle regeneration. Human amniotic fluid derived stem cells (AFS) have the potential to secrete various neurotrophic factors necessary for nerve regeneration. In the present study, we assess the outcome of neurological function by intramuscular injection of AFS in a muscle denervation and nerve anastomosis model. MATERIALS AND METHODS: Seventy two Sprague-Dawley rats weighing 200-250 gm were enrolled in this study...
2015: PloS One
Dawndra M Sechrist, Cynthia Gorter Tiongco, Sandra M Whisner, Matthew D Geddie
This pilot study examined the effectiveness of an Aquatic Exercise Program (AEP) provided by an occupational therapist for pregnant women on hospitalized bed rest. Researchers conducted a retrospective analysis of medical records of hospitalized pregnant women comparing those who attended an AEP (n = 19) to a control group who received no AEP (n = 12). Statistical tests were used to assess evidence of differences in length of gestation as well as blood pressure and amniotic fluid index (AFI) at discharge. Women who received an AEP had increased AFI and length of gestation compared to the control group...
2015: Occupational Therapy in Health Care
M Griffin, P T Seed, L Webster, J Myers, L MacKillop, N Simpson, D Anumba, A Khalil, M Denbow, A Sau, K Hinshaw, P von Dadelszen, S Benton, J Girling, C W G Redman, L C Chappell, A H Shennan
OBJECTIVES: To assess the diagnostic accuracy of placental growth factor (PlGF) and ultrasound parameters to predict delivery of a small-for-gestational-age (SGA) infant in women presenting with reduced symphysis-fundus height (SFH). METHODS: This was a multicenter prospective observational study recruiting 601 women with a singleton pregnancy and reduced SFH between 24 and 37 weeks' gestation across 11 sites in the UK and Canada. Plasma PlGF concentration < 5(th) centile, estimated fetal weight (EFW) < 10(th) centile, umbilical artery Doppler pulsatility index > 95(th) centile and oligohydramnios (amniotic fluid index < 5 cm) were compared as predictors for a SGA infant < 3(rd) customized birth-weight centile and adverse perinatal outcome...
August 2015: Ultrasound in Obstetrics & Gynecology
S Sohlberg, A Mulic-Lutvica, M Olovsson, J Weis, O Axelsson, J Wikström, A-K Wikström
OBJECTIVE: To evaluate in-vivo placental perfusion fraction, estimated by magnetic resonance imaging (MRI), as a marker of placental function. METHODS: A study population of 35 pregnant women, of whom 13 had pre-eclampsia (PE), were examined at 22-40 weeks' gestation. Within a 24-h period, each woman underwent an MRI diffusion-weighted sequence (from which we calculated the placental perfusion fraction), venous blood sampling and an ultrasound examination including estimation of fetal weight, amniotic fluid index and Doppler velocity measurements...
December 2015: Ultrasound in Obstetrics & Gynecology
Suwan Mehra, Erol Amon, Sarah Hopkins, Jeffrey A Gavard, Jaye Shyken
OBJECTIVE: We sought to determine whether transvaginal cervical length (TVCL), amniotic fluid index (AFI), or a combination of both can predict delivery latency within 7 days in women presenting with preterm premature rupture of membranes (PPROM). STUDY DESIGN: This was a prospective observational study of TVCL measurements in 106 singleton pregnancies with PPROM between 23-33 weeks. Delivery latency was defined as the period (in days) from the initial TVCL after PPROM to delivery of the infant, with our primary outcome being delivery within 7 days of TVCL...
March 2015: American Journal of Obstetrics and Gynecology
Nitin Wadnere, Susmit Kosta, Ravindra Kumar
BACKGROUND: The placenta is important for fetal growth and well-being. Defective placentation and impaired placental circulation may result in anomalies in fetal growth. Placental volume in the second trimester appears to be closely related to the neonatal weight. The association of body weight with urine output has been observed in human neonates. Our goal is to assess the association of the amniotic fluid index (AFI) with the estimated fetal weight (EFW). MATERIALS AND METHODS: Thirteen hundred and ninety-three pregnant women were prospectively studied by means of an ultrasound over a 12-month period...
2014: Advanced Biomedical Research
Ruiqi Yang, He Zhu, Jialing Zhang, Fei Wang, Limei Fan
OBJECTIVE: To explore the value of prenatal ultrasound in assessing thyroid function in fetuses of hyperthyroidism pregnant women and establish the reference values of fetal thyroid transverse diameter and anteroposterior diameter for different gestational weeks. METHODS: For observation group, 30 cases of pregnant women diagnosed as hyperthyroidism were recruited from our hospital from November 2012 to November 2013. And another 100 cases of pregnant women during 20 to 40 weeks of gestational weeks were selected into control group...
September 23, 2014: Zhonghua Yi Xue za Zhi [Chinese medical journal]
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