0 a three-month period --
Many students arrange internships or work-study placements during the second trimester.
The second trimester is generally the easiest part of a pregnancy.
1 A trimester is any of the three, three-month periods that a human pregnancy is divided into. --
When they eventually give up under various kinds of social and political pressure, their pregnancies have often progressed into the second or third trimester.
Also, there are abnormalities which do not become apparent until late in the second trimester such as bowel atresias.
High proliferation rates are necessary in the ®rst trimester to accommodate the exponential growth phase of the placenta.
During the second trimester of pregnancy, specific biometric indicators are measured using ultrasound to detect fetuses presenting with this syndrome.
The third trimester ultrasound examination has been offered since 1996.
The clinical signi®cance of asymptomatic mid-trimester low placentation diagnosed by ultrasound.
After iron, antiemetic (counteracts sickness) and analgesic (counteracts pain) preparations were those most frequently taken during the first trimester of pregnancy.
This would reduce the number of women undergoing unnecessary third trimester scans and may reduce prolonged hospital stays and caesarean sections.
