Gestational Age and Ultrasonic Measurement of Gestational Sac, Crown-Rump Length and Biparietal Diameter During First 15 Weeks of Pregnancy

1982 ◽  
Vol 61 (3) ◽  
pp. 233-235 ◽  
Author(s):  
Anders Selbing
Keyword(s):  
Gestational Age ◽  
Ultrasonic Measurement ◽  
Crown Rump Length ◽  
Biparietal Diameter ◽  
Gestational Sac

Detection of the Small-for-Gestational Age Twin Fetus by a Two-Stage Ultrasound Examination Schedule

1982 ◽  
Vol 31 (3-4) ◽  
pp. 235-240 ◽  
Author(s):  
J.P. Neilson
Keyword(s):  
Early Pregnancy ◽  
Gestational Age ◽  
Small For Gestational Age ◽  
Ultrasound Examination ◽  
Ultrasonic Measurement ◽  
Two Stage ◽  
Crown Rump Length ◽  
Biparietal Diameter ◽  
Ultrasonic Assessment ◽  
Twin Pregnancies

Serial ultrasonic measurement of the biparietal diameter is an unsatisfactory means of detecting the small-for-gestational age (SGA) fetus in twin pregnancies. A new two-stage ultrasound examination schedule, highly effective in detecting the SGA singleton fetus, has been evaluated prospectively in 31 twin pregnancies. The schedule comprises ultrasonic assessment of gestational age in early pregnancy, followed by measurement of the product of the crown–rump length and trunk area of both fetuses at 34–36 weeks. All Nineteen SGA twin fetuses were detected using this schedule; the technique offers several other advantages over serial biparietal cephalometry.

Sonographic Correlation Between Distal Femoral Epiphysis Ossification Centre And Gestational Age From 28 Weeks To 40 Weeks In Population Of Faisalabad City

2020 ◽  
pp. 12-19
Author(s):  
OJS Admin
Keyword(s):  
Gestational Age ◽  
Age Estimation ◽  
Abdominal Circumference ◽  
Perinatal Morbidity ◽  
Ossification Centre ◽  
Age Assessment ◽  
Crown Rump Length ◽  
Biparietal Diameter ◽  
Distal Femoral Epiphysis ◽  
Ossification Centers

Gestational age assessment is one of the most important tool used for estimation of perinatal morbidity and mortality. Age estimation of fetus can be recorded with the help of various parameters such as biparietal diameter, abdominal circumference, head circumference, length of the kidneys, crown rump length, length of the long bones and ossification centers.

scholarly journals Predictors of complete miscarriage after expectant management or misoprostol treatment of non-viable early pregnancy in women with vaginal bleeding

2020 ◽  
Vol 302 (5) ◽  
pp. 1279-1296
Author(s):  
Anna Fernlund ◽  
Ligita Jokubkiene ◽  
Povilas Sladkevicius ◽  
Lil Valentin
Keyword(s):  
Logistic Regression ◽  
Early Pregnancy ◽  
Gestational Age ◽  
Vaginal Bleeding ◽  
Treatment Success ◽  
Expectant Management ◽  
Crown Rump Length ◽  
Multivariable Logistic Regression ◽  
Vaginal Deliveries ◽  
Gestational Sac

Abstract Purpose To identify predictors of complete miscarriage after expectant management or misoprostol treatment of non-viable early pregnancy in women with vaginal bleeding. Methods This was a planned secondary analysis of data from a published randomized controlled trial comparing expectant management with vaginal single dose of 800 µg misoprostol treatment of women with embryonic or anembryonic miscarriage. Predefined variables—serum-progesterone, serum-β-human chorionic gonadotropin, parity, previous vaginal deliveries, gestational age, clinical symptoms (bleeding and pain), mean diameter and shape of the gestational sac, crown-rump-length, type of miscarriage, and presence of blood flow in the intervillous space—were tested as predictors of treatment success (no gestational sac in the uterine cavity and maximum anterior–posterior intracavitary diameter was ≤ 15 mm as measured with transvaginal ultrasound on a sagittal view) in univariable and multivariable logistic regression. Results Variables from 174 women (83 expectant management versus 91 misoprostol) were analyzed for prediction of complete miscarriage at ≤ 17 days. In patients managed expectantly, the rate of complete miscarriage was 62.7% (32/51) in embryonic miscarriages versus 37.5% (12/32) in anembryonic miscarriages (P = 0.02). In multivariable logistic regression, the likelihood of success increased with increasing gestational age, increasing crown-rump-length and decreasing gestational sac diameter. Misoprostol treatment was successful in 80.0% (73/91). No variable predicted success of misoprostol treatment. Conclusions Complete miscarriage after expectant management is significantly more likely in embryonic miscarriage than in anembryonic miscarriage. Gestational age, crown-rump-length, and gestational sac diameter are independent predictors of success of expectant management. Predictors of treatment success may help counselling women with early miscarriage.

Prediction of gestational age by ultrasonic measurement of the Biparietal diameter in third trimester

2019 ◽  
Vol 9 (2) ◽  
pp. 26-30
Author(s):  
Alka B Patil ◽  
◽  
Shruti Singh ◽  
Nilay Patel ◽  
Rahul V Patil ◽  
...  
Keyword(s):  
Gestational Age ◽  
Ultrasonic Measurement ◽  
Third Trimester ◽  
Biparietal Diameter

Automatic Gestational Age Estimation Based on Crown Rump Length and Gestational Sac

2016 ◽  
Vol 4 (1) ◽  
pp. 20-24
Author(s):  
David H. Hareva ◽  
◽  
Irene A. Lazarusli ◽  
Suryasari Suryasari
Keyword(s):  
Gestational Age ◽  
Age Estimation ◽  
Crown Rump Length ◽  
Gestational Sac ◽  
Gestational Age Estimation

scholarly journals Determination of gestational age by measuring defined embryonic and foetal indices with ultrasonography in Abaza and Gurcu goats

2018 ◽  
Vol 87 (4) ◽  
pp. 357-362 ◽  
Author(s):  
Mushap Kuru ◽  
Hasan Oral ◽  
Recai Kulaksiz
Keyword(s):  
Gestational Age ◽  
Crown Rump Length ◽  
Trunk Diameter ◽  
Biparietal Diameter ◽  
Study Results ◽  
Linear Probe ◽  
Length Measurements ◽  
Ultrasound Measurements ◽  
The Mean

The aim of this study was to determine gestational age in Abaza and Gurcu goats by measuring certain embryonic and foetal indices with ultrasonography. A 5–7.5 MHz linear probe was used to obtain ultrasound measurements from 30 pregnant goats (10 Abaza and 20 Gurcu). Heart diameter (HD), biparietal diameter (BPD), crown-rump length (CRL), trunk diameter (TD) and placentome diameter (PD) were measured to determine gestational age. The mean of embryonic and foetal indices were calculated and linear regression was performed. Heart diameter measurements for Abaza and Gurcu goats were significantly different on days 45 (P= 0.048) and 60 (P= 0.019). Biparietal diameter values were significantly different on day 45 (P= 0.035). Crown-rump length measurements were significantly different at days 30 (P= 0.003) and 60 (P= 0.002). We determined that HD and TD were the best predictors of gestational age for Abaza goats (R2= 0.952, R2= 0.949, respectively), whereas HD and CRL were the best predictors of gestational age for Gurcu goats (R2= 0.933, R2= 0.942, respectively). Based upon our study results, these specific indices could be applied during ultrasonographic examinations of Abaza and Gurcu goats to confirm gestational age when the day of mating is unknown.

Prediction of Gestational Age in Osmanabadi Goats by Ultrasonic Measurement of Crown-Rump Length

2016 ◽  
Vol 12 (2) ◽  
Author(s):  
Prasanna Patil ◽  
S. K. Sahatpure ◽  
A. D. Patil ◽  
Umesh Kumar ◽  
Basanti Jena ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Gestational Age ◽  
Linear Regression Analysis ◽  
Ultrasonic Measurement ◽  
Reliable Index ◽  
Crown Rump Length ◽  
Transabdominal Ultrasonography ◽  
Biometric Parameter ◽  
Natural Mating

The objective of this study was to predict gestational age of Osmanabadi goats by realtime ultrasonography using measurements of Crown Rump Length (CRL). CRL was measured in 15 Osmanabadi goats, by transabdominal ultrasonography carried out on days 35, 42, 49, 56, 63 and 70 of gestation, those became pregnant after oestrus detection and natural mating following oestrus synchronization in 30 does using double PGF2α injections 11 days apart. Gestational age was calculated by using gestational equations derived from the linear regression analysis. Results clearly demonstrated that biometric parameter CRL was significantly (P ios less than 0.01) correlated with gestational age (r= 0.988) and was a reliable index to predict gestational age in Osmanabadi goats.

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