Where a pregnancy is longer than 294 days, or 42 weeks, it is described as a post-term pregnancy. It may also be described as a post-dates or prolonged pregnancy.
Dating a pregnancy is not an exact science. A due date (which is the beginning of the 40th week of pregnancy) is calculated from the first day of a pregnant woman’s last menstrual period or from the information provided on an ultrasound scan in early pregnancy. While these methods are both still estimates, the most reliable assessment of the estimated due date is by an early ultrasound performed in the first trimester – between 7-14 weeks.
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Understanding Birth Injuries
- Labour and delivery