Question
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What is the expected date of delivery for your pregnant client when her last menstrual period was on 10/20/2016?
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7/7/2017
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8/7/2017
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6/7/2017
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8/1/2017
Correct Response: A
The expected date of delivery is calculated using Nagle’s rule which is:
The first day of last menstrual period – 3 months + 7 days = the estimated date of delivery
For example, when the first day of the last menstrual period is 10/20/2016 you would:
Subtract three months from 10/20/2016 and then you get 7/20/2016 and then
Add seven days to 7/20/2016 and then get 7/27/2016, after which you would
Add one year to 7/27/2016 to get the estimated date of delivery for7/27 of the following year which is 7/27/2017.
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