ESTIMATE GESTATIONAL AGE ACCORDING TO FETAL CROWN RUMP LENGTH ON ECHOGRAPHY

2021 ◽  
Vol 62 (6) ◽  
Author(s):  
Tran Danh Cuong ◽  
Nguyen Hai Long ◽  
Ngo Toan Anh ◽  
Nguyen Thi Thu Huong ◽  
Le Pham Sy Cuong ◽  
...  
Keyword(s):  
Prenatal Diagnosis ◽  
Pregnant Women ◽  
Linear Equation ◽  
Gestational Age ◽  
Menstrual Period ◽  
Last Menstrual Period ◽  
Obstetrics And Gynecology ◽  
National Hospital ◽  
Crown Rump Length ◽  
The Mean

Objectives: Development of descriptive table of gestational age (GA) based on fetal crown rump length (CRL) in Vietnam. Methods: This study was conducted at the Center for Prenatal Diagnosis, National Hospital Obstetrics and Gynecology. Gestational age based on the first day of last menstrual period (LMP) ranges from 10 weeks to 14 weeks and 6 days. Pregnant women who are healthy, have regular menstrual periods, have not used hormonal drugs or assisted reproductive methods before. Have ultrasound measured the length of the crown-rump of the embryo based on the mandatory criteria. Data were analysed using SPSS 20.0 software. Results: 1008 singleton fetuses that met criteria, were predicted GA according to LMP. There were 1008 fetal crown rump length recorded. The mean CRL was 59.95 ± 6.79 (mm), the mean gestational age according to KCC was: 12.13 ± 0.75 (weeks). Gestational age was linearly correlated with fetal crown rump length according to the equation: CRL = 6.602+ GAx 4.398 and GA= 8.889 + CRLx 0.54. Conclusion: Gestational age can be calculated based on fetal crown rump length index by linear equation: GA = 8.889 + CRLx 0.54. The equations can be applied to calculate gestational age in ultrasound practice in Vietnam.

scholarly journals A Study of Crinio-facial Measurement (Biparietal Diameter) of Fetus by Ultrasonography in Different Age Group of The Tribal Population of Jharkhand

2021 ◽  
Vol 9 (3.2) ◽  
pp. 8059-8063
Author(s):  
Annu Bobby ◽  
◽  
Rahul Prasad ◽  
Keyword(s):  
Pregnant Women ◽  
Clinical Evaluation ◽  
Gestational Age ◽  
Antenatal Clinic ◽  
Menstrual Period ◽  
Last Menstrual Period ◽  
Age Group ◽  
Tribal Population ◽  
Biparietal Diameter ◽  
History Of

Introduction: The pregnancy cannot be dated accurately by clinical evaluation alone. Sonography is a useful and an accurate tool for estimation of the gestational age. Biparietal diameter is one the robust method of the basic biometric parameter used to assess fetal size and age. Aims and objective: The aim of this study was to collect data on craniofacial measurement of fetuses of the different age group by Ultrasonography at RIMS, Ranchi and to correlate its relationship with the different fetal age group. Materials and methods: The study was carried out on 100 pregnant women who gave definite history of their last menstrual period and 100 pregnant women who were not able to give definite history of their last menstrual period, in the tribal population of Jharkhand. The cases were selected from antenatal clinic of out-patients department of obstetrics and gynecology of RIMS, Ranchi. The ultrasonography was done by Dept of Radiology, RIMS, Ranchi. Discussion: In obstetrics the duration of pregnancy is calculated by the first day of the last menstrual period at present study standard variation of gestation age base on L M P when the pregnancy cannot be date accurately alone by clinical evaluation alone. Sonography is accepted as the most useful and accurate tool for estimating gestational age. BPD diameter was measured by ultrasonography and along with clinical findings, average gestational age was determined. Conclusion: Sonography is accepted as the most useful and accurate tool for estimating gestational age in those pregnant women who were not able to give definitive history of last menstrual period. Our study showed that the Growth rate of fetal BPD increases progressively as the fetal age increase in early weeks of pregnancy whereas growth is slow in later weeks of pregnancy, our study also showed that measurement of Biparietal diameter is a useful criterion to predict GA & determining EDD. KEY WORD: Pregnancy, Gestational age (GA), Biparietal diameter (BPD), Ultrasonography (USG), Expected date of delivery (EDD).

Is there a Need for Own Median Calculation in the Second Trimester Biochemical Markers Screening?

2017 ◽  
Vol 68 (5) ◽  
pp. 1070-1072
Author(s):  
Dan Navolan ◽  
Mirela Nicolov ◽  
Simona Vladareanu ◽  
Ioana Ciohat ◽  
Marius Craina ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Gestational Age ◽  
Biochemical Markers ◽  
Biochemical Marker ◽  
Second Trimester ◽  
Established Method ◽  
Crown Rump Length ◽  
The Difference ◽  
Fetal Aneuploidies ◽  
Singleton Pregnancies

Screening of fetal aneuploidies in early pregnancy is a well-established method in the materno-fetal medicine. The aim of our study was to analyze if the medians recommended by the manufacturers are adequate to perform an accurate screening or if there is a need for own laboratory medians calculation in second trimester biochemical marker screening.Sera were collected between 14 wp and 22 wp from 3374 singleton pregnancies. We analyzed three second trimester biochemical markers (AFP, hCG and free Estriol) concentration in all pregnant women and in a subgroup of pregnant women in which gestational age was determined based on crown-rump length. Our results showed that for all biochemical markers the difference between the manufacturer and the own calculated median was lower than 10% excepting the hCG value in the group of pregnant women in which the gestational age was determined on basis of crown-rump-length. Our results show it is recommended to replace the values of the median for hCG measurement with the own laboratory calculated medians. This does not seem to be necessary in the case of AFP and free Estriol measurement.

scholarly journals Amniocentesis increases level of anxiety in women with invasive prenatal diagnosis of Down syndrome

2015 ◽  
Vol 34 (2) ◽  
pp. 112 ◽  
Author(s):  
Yanuarita Tursinawati ◽  
Serene Thain ◽  
Christina Choi ◽  
George Heong Yeo Seow
Keyword(s):  
Down Syndrome ◽  
Prenatal Diagnosis ◽  
Pregnant Women ◽  
Gestational Age ◽  
Perceived Risk ◽  
Linear Regression Analysis ◽  
Chorionic Villus ◽  
Chorionic Villus Sampling ◽  
Psychological Responses ◽  
Depression Anxiety Stress Scale

Backgound <br />Invasive prenatal diagnosis (PND) through amniocentesis and chorionic villus sampling (CVS) can detect Down syndrome. Pregnant women usually experience a variety of psychological responses associated with invasive PND. This study is intended to assess depression, anxiety and stress levels and the factors related to their psychological responses in pregnant women with invasive prenatal diagnosis of Down syndrome.<br /><br />Methods <br />A cross sectional study was conducted at Kandang Kerbau Women’s and Children’s Hospital, Singapore. The psychological responses of 70 women undergoing PND were assessed by Depression Anxiety Stress Scale 21 (DASS 21) questionnaire. A multiple linear regression analysis was used to analyze association between knowledge and perceived risk with psychological responses (CI 95% and significance value p&lt;0.05).<br /><br />Results <br />More than half of the participants had normal anxiety (55.7%), stress (72.8%), depression levels (65.8%). The results revealed significantly higher level of anxiety in women with gestational age &gt;13 weeks who had pursued amniocentesis. Women with no previous children had higher levels of depression and stress. Women who pursued amniocentesis had significantly higher anxiety scores compared to women undergoing CVS (p=0.015).<br /><br />Conclusions <br />Women’s psychological responses are associated with gestational age, type of procedure and parity. The level of anxiety increased in women who underwent amniocentesis for diagnosis of Down syndrome. Knowledge and perceived risk of having a baby with Down syndrome do not seem to have psychological effects to women.

scholarly journals Time of quickening is associated with the placental site and BMI in nulliparous women

2020 ◽  
Author(s):  
Negin Jaafar ◽  
Lars Henning Pedersen ◽  
Olav Bjørn Petersen ◽  
Lone Hvidman
Keyword(s):  
Pregnant Women ◽  
Gestational Age ◽  
Prospective Observational Study ◽  
Nuchal Translucency ◽  
Second Trimester ◽  
Nulliparous Women ◽  
Placental Site ◽  
Fetal Movements ◽  
The Mean ◽  
Important Milestone

AbstractIntroductionQuickening, the first sensation of fetal movements, is an important milestone for pregnant women. Information on the expected gestational age at quickening may reduce anxiety and prevent delayed detection of intrauterine demise but the available data are from the 1980s before the emergence of modern ultrasound techniques.Materials and methodsProspective observational study on nulliparous women blinded for placental location in two hospitals in Denmark. The pregnant women were enrolled at the time of nuchal translucency scan, placental location was determined at time of second trimester scanning.. The women were blinded to placenta location before time of quickening. Time of quickening were reported by 122 women, 65 with an anterior and 57 with a posterior placenta. Thirteen women had a BMI >30 (10.7%).ResultsThe mean gestational age for quickening was 19 + 0 weeks for nulliparous women. The timing depended on placental site; women with an anterior placenta experienced quickening 6.4 days later than the women with a posterior placenta. BMI > 30 was associated with a later time of quickening.ConclusionsAnterior placental location is associated with delay in experience of fetal movements of 6.4 days and this may further be delayed in women with a BMI>30.

The effect of ear acupressure medicine at the “Shen Men” point on the nausea and vomiting during pregnancy

2021 ◽  
Vol 15 (5) ◽  
pp. 1774-1779
Author(s):  
Sanaz Nehbandani ◽  
Hajar Salehi ◽  
Khadije Rezaie Keikhaie ◽  
Hossein Rashki Ghalenow ◽  
Fatemeh Mirzaie ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Gestational Age ◽  
Intervention Group ◽  
Nausea And Vomiting ◽  
Control Group ◽  
Health Clinics ◽  
Significant Difference ◽  
Quasi Experimental ◽  
The Mean ◽  
The Difference

Introduction & Objective: Nausea and vomiting during pregnancy is one of the most common gastrointestinal disorders that more than 85% of pregnant women experience. However, controlling and treating this complication is still one of the most important issues in antenatal care. Therefore, the aim of this study was to investigate the effect of ear acupressure at Shen Men point on relieving nausea, vomiting and retching during pregnancy. Materials and Methods: In this quasi-experimental study, 100 pregnant women with a gestational age of less than 16 weeks attending the health clinics of Zabol city during 2019-2020 were studied in two control and intervention groups (n = 50 in each group). The samples in the intervention group were trained to apply pressure on their ears’ Shen Men point with the thumb for three minutes three times a day (morning, noon, and night), for a duration of one month. At the end of second and fourth weeks, the data were collected using the Rhodes index form and then, were analyzed by SPSS software version 22. Results: According to the results, there was no significant difference between the two groups in terms of age, gestational age, occupation and education. The difference in the mean scores of nausea, vomiting and retching was not statistically significant between the control and intervention groups before the study. But four weeks after the study, a significant difference was observed in the mean scores of vomiting, nausea and retching between the two groups, so that the mean scores of vomiting, nausea and retching were significantly lower in the intervention group than in the control group. Conclusion: The ear acupressure medicine at the Shen men point can be used as a non-invasive, safe and inexpensive method to relieve nausea, vomiting and retching during pregnancy. Keywords: Acupressure medicine, Shen Men, Vomiting, Pregnancy, Nausea, Retching, Rhodosis

scholarly journals Early termination of pregnancy: differences in gestational age estimation using last menstrual period and ultrasound in Mexico

2020 ◽  
Vol 17 (1) ◽  
Author(s):  
Biani Saavedra-Avendano ◽  
Raffaela Schiavon ◽  
Patricio Sanhueza ◽  
Ranulfo Rios-Polanco ◽  
Laura Garcia-Martinez ◽  
...  
Keyword(s):  
Gestational Age ◽  
Age Estimation ◽  
Termination Of Pregnancy ◽  
Early Termination ◽  
Menstrual Period ◽  
Last Menstrual Period ◽  
Gestational Age Estimation

scholarly journals Determining Gestational Age in a Low-resource Setting: Validity of Last Menstrual Period

2009 ◽  
Vol 27 (3) ◽  
Author(s):  
Gary L Darmstadt ◽  
Rebecca E Rosenberg ◽  
ASM Nawshad U Ahmed ◽  
Saifuddin Ahmed ◽  
Samir K Saha ◽  
...  
Keyword(s):  
Gestational Age ◽  
Menstrual Period ◽  
Last Menstrual Period ◽  
Low Resource ◽  
Resource Setting ◽  
Low Resource Setting

scholarly journals Evaluating the Agreement of Risk Categorization for Fetal Down Syndrome Screening between Ultrasound-Based Gestational Age and Menstrual-Based Gestational Age by Maternal Serum Markers

2018 ◽  
Vol 2018 ◽  
pp. 1-5
Author(s):  
Pakorn Chaksuwat ◽  
Supatra Sirichotiyakul ◽  
Suchaya Luewan ◽  
Theera Tongsong
Keyword(s):  
Down Syndrome ◽  
Gestational Age ◽  
False Positive Rate ◽  
Serum Markers ◽  
Maternal Serum ◽  
Menstrual Period ◽  
Last Menstrual Period ◽  
Second Trimester Screening ◽  
Risk Categorization ◽  
Down Syndrome Screening

Objective. To evaluate the agreement of risk categorization for Down syndrome screening between ultrasound scan-based gestational age (GA) and last menstrual period-based gestational age in both first and second trimesters by maternal serum markers. Methods. Data comprising 4,055 and 4,016 cases of first and second trimester screening were used. The maternal serum markers were analyzed using the ultrasound-based GA and menstrual age. The subjects whose menstrual age and ultrasound-based GA fell in different trimesters were excluded because the risk could not be calculated due to the different serum markers used in each trimester. The agreement of risk categorization for fetal Down syndrome was evaluated. Results. The agreement of Down syndrome screening in the first and the second trimesters were 92.7% and 89%, respectively. The study found a good agreement of risk categorization by Kappa index, which was 0.615 for the overall screening. The menstrual age had a slight decrease in the detection rate and a lower false-positive rate. Conclusion. Menstrual age is acceptable in cases of accurate last menstrual period. However, in places where ultrasonography is not readily available, gestational age estimation by menstrual age along with clinical examination that corresponds to the gestational age can be reliable.

scholarly journals Association of gestational age with MRI-based biometrics of brain development in fetuses

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Yuequan Shi ◽  
Yunjing Xue ◽  
Chunxia Chen ◽  
Kaiwu Lin ◽  
Zuofu Zhou
Keyword(s):  
Regression Model ◽  
Brain Development ◽  
Fetal Growth ◽  
Gestational Age ◽  
Rapid Growth ◽  
Polynomial Regression ◽  
Fetal Brain ◽  
Growth Patterns ◽  
Menstrual Period ◽  
Last Menstrual Period

Abstract Background Reported date of last menstrual period and ultrasonography measurements are the most commonly used methods for determining gestational age in antenatal life. However, the mother cannot always determine the last menstrual period with certainty, and ultrasonography measurements are accurate only in the first trimester. We aimed to assess the ability of various biometric measurements on magnetic resonance imaging (MRI) in determining the accurate gestational age of an individual fetus in the second half of gestation. Methods We used MRI to scan a total of 637 fetuses ranging in age from 22 to 40 gestational weeks. We evaluated 9 standard fetal 2D biometric parameters, and regression models were fitted to assess normal fetal brain development. A stepwise linear regression model was constructed to predict gestational age, and measurement accuracy was determined in a held-out, unseen test sample (n = 49). Results A second-order polynomial regression model was found to be the best descriptor of biometric measures including brain bi-parietal diameter, head circumference, and fronto-occipital diameter in relation to normal fetal growth. Normal fetuses showed divergent growth patterns for the cerebrum and cerebellum, where the cerebrum undergoes rapid growth in the second trimester, while the cerebellum undergoes rapid growth in the third trimester. Moreover, a linear model based on biometrics of brain bi-parietal diameter, length of the corpus callosum, vermis area, transverse cerebellar diameter, and cerebellar area accurately predicted gestational age in the second and third trimesters (cross-validation R2 = 0.822, p < 0.001). Conclusions These results support the use of MRI biometry charts to improve MRI evaluation of fetal growth and suggest that MRI biometry measurements offer a potential estimation model of fetal gestational age in the second half of gestation, which is vital to any assessment of pregnancy, fetal development, and neonatal care.

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