background: vitamin d deficiency during pregnancy is associated with some adverse pregnancy outcomes but its relationship with fetal growth is unknown. objective: we compared the 25-hydroxy vitamin d levels between mothers and their small for gestational age (sga) newborns with mothers and their appropriate for gestational age (aga) newborns. materials and methods: the study population included...

introduction: the parikh’s formula is a calculation method that considers menstrual cycle duration in women who have an unusual interval of menstruation cycle. since the accurate estimation of gestational age affects pregnancy outcomes, the present study aimed to compare the first trimester ultrasound and parikh’s formula in determining the expected date of delivery (edd). materials and methods...

background: stillbirth is a sensitive indicator for health care quality, living conditions and equity in a society. the aim of this study was to determine the rate and contributing factors of stillbirth at babol hospitals. methods: this cross-sectional, descriptive, analytical study was designed as an applied research, using census sampling in 2012-2013. a questionnaire was applied for data col...

the aim of this survey was to evaluate the frequency of pregnant ewes slaughtered in khorram abadabattoir and estimation of their gestational age. over a period of five months in fall and winter, a totalnumber of 3046 uterine tracts were collected. pregnancy was detected in 56.50% of ewes, 52.36% and 4.13% of which carried singleton and twins, respectively. the highest frequency of pregnancy wa...

to determine the gestational age of ultrasound devices, commonly used standard tables. the aim was to determine the gestational age of pregnant women admitted to hospitals in zahedan with hadlock and osaka table and gestational age derived from the tables to be adjusted to determine the gestational age of the actual use of tables for a more accurate determination of gestational age for the prop...

the aim of this study was to estimate the incidence of retinopathy of permaturity (rop) and to evaluate possible neonatal risk factors for rop. the main study was a cross-sectional study including 150 high-risk neonates born at teaching hospitals of tehran universities referring to to farabi eye hospital. the chossing critertia were birth weight less than 2500 g or gestational age younger than ...

a true estimation of gestational age (ga) plays an important role in quality maternity care and scheduling the labor date. this study aimed to evaluate the normal fetal kidney length (kl) and its correlation with ga. a cross-sectional study on 92 pregnant women between 8th and 10th week of gestation with normal singleton pregnancy underwent standard ultrasound fetal biometry and kidney length m...

the differential diagnosis of acute abdominal pain in pregnancy is broad and can be complicated by atypical manifestations that are due to the anatomic distortions and physiologic changes of pregnancy. due to the lack of clinical understanding, angular pregnancy does not appear to be recognized as a clinical entity and many cases are likely to go undiagnosed . this is a case report of a 34-year...

objective: to determine the effect of paternal age on preterm births in iranian neonates. materials and methods: from january 2005 to january 2006, two hundred eighty one preterm neonates born in mirza kuchakkhan hospital enrolled in this cross-sectional study. a structured questionnaire was applied for recording following data: birth weight, sex, gestational age, maternal age and paternal age....

background: birth weight and gestational age are two important variables in obstetric research. the primary measure of gestational age is based on a mother's recall of her last menstrual period. this recall may cause random or systematic errors. therefore, the objective of this study is to utilize bayesian mixture model in order to identify implausible gestational age.   methods: in this cross-...