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Let’s compare the two ways to obtain the gestational age. So for Nägele’s again we subtract 3 months from the last menstrual period, add 7 days, and add 1 year. Keep in mind if this patient’s last menstrual period was in January then you have to pay careful attention to subtracting the year with it and re-adding or you will end up with someone being pregnant for 2 years and that wouldn’t be right. This could be tricky on a test so make sure to subtract the year so it does not mess you up. With an ultrasound the patient should be comfortable at an incline and the ultrasound will either be external or internal depending on how far along they believe the patient to be.. Usually if they are 6-11 weeks it will be internal because the fetus is so small.
There is not medical management necessary. It is important to help explain to the patient what we are doing with ultrasound. An external ultrasound is not as intrusive but a transvaginal can be intrusive so we want to educate on the process and ease any discomforts. It will be important to educate on why we are calculating the due date and what it means. We should also educate on the importance of coming back for future prenatal appointments and caring for herself during pregnancy.
Pregnancy gestation deals with human development so this is a nursing concept and pregnancy had to deal with reproduction so this is another concept.
Let’s review our key points. Length of pregnancy is what gestation is referring to. Nägele’s rule is done to estimate the due date. Again we ask the last menstrual cycle started, subtract 3 months, add 7 days, add a year. Ultrasound will either be transvaginal or external. This will be done to get a measurement of the embryo/fetus from crown to rump length. This measurement will determine the gestational age.
Make sure you check out the resources attached to this lesson. Now, go out and be your best selves today. And, as always, happy nursing.
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