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A median of 288 days (274 days from the date of ovulation) for first-time mothers and 283 days (269 days from the date of ovulation) for mothers with at least one previous pregnancy was found by a 1990 study of 114 white, private-care patients with uncomplicated pregnancies and spontaneous labor. The authors suggest that excluding pregnancies ...
Pre-eclampsia affects 2–8% of pregnancies worldwide. [4] [17] [12] Hypertensive disorders of pregnancy (which include pre-eclampsia) are one of the most common causes of death due to pregnancy. [6] They resulted in 46,900 deaths in 2015. [7] Pre-eclampsia usually occurs after 32 weeks; however, if it occurs earlier it is associated with worse ...
When used to avoid pregnancy, the standard days method has been estimated [22] to have perfect-use efficacy of 95% and typical-use efficacy of 88%. [ 20 ] [ 21 ] These figures are based on a 2002 study in Bolivia, Peru, and the Philippines of women of reproductive age having menstrual cycles between 26 and 32 days, [ 20 ] [ 23 ] : 505 and on a ...
Eclampsia, like pre-eclampsia, tends to occur more commonly in first pregnancies than subsequent pregnancies. [38] [39] [40] Women who have long term high blood pressure before becoming pregnant have a greater risk of pre-eclampsia. [38] [39] Patients who have gestational hypertension and pre-eclampsia have an increased risk of eclampsia. [41]
The mean pregnancy length has been estimated to be 283.4 days of gestational age as timed from the first day of the last menstrual period and 280.6 days when retrospectively estimated by obstetric ultrasound measurement of the fetal biparietal diameter (BPD) in the second trimester. [12]
Preeclampsia is one of the leading causes of pregnancy complications. The newly approved blood test that detects it might help The post A new blood test can help diagnose preeclampsia in pregnant ...
Preeclampsia is a pregnancy-specific condition characterized by maternal hypertension and proteinuria after the 20th week of gestation. [5] Normally, during early formation of the placenta, extravillous cytotrophoblasts, a type of specialized fetal cell, enter the spiral arteries of the uterus.
Nicolaides has developed methods of (i) screening for premature birth (which is the main cause of perinatal morbidity and mortality) by measurement of cervical length and prevention through the use of vaginal progesterone, [9] (ii) screening for pre-eclampsia (which is one of the main causes of maternal mortality) by measurement of blood flow ...
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