WOMENS-HEALTH Messages for June, 1997: Re: length of pregnancy confusion

Re: length of pregnancy confusion

From: Kelly (anonymous@obgyn.net)
Tue, 3 Jun 1997 11:00:35 -0500 (CDT)

Messages sorted by: [ date ][ thread ][ subject ][ author ]
Next message: Kelly: "Re: miscarring :("
Previous message: Laurie: "Re: Hot flashes...."
In reply to: Loriann: "length of pregnancy confusion"
Next in thread: anonymous@obgyn.net: "Re: length of pregnancy confusion"

At Tue, 3 Jun 1997, Loriann wrote: >
>my lmp was 3/12/97 which would make me as of 6/3/97
>, 12 weeks tomorrow, however the ultrasound i had a few
>weeks ago they said i was 8 weeks 5 days, when according
>my lmp was 9 weeks 1 day.
>
>Because of my age (39 in July) I will need to go for many
>different tests which are done during certain time
>periods. Which is the date I go by? Right now I am very
>confused...Am I 12 week or 11.2 weeks?
>
>Please let me know your opinions...thank you.

No matter how we determine gestational age it is always an ESTIMATE -- EDC (estimated date of confinement = due date) is plus/minus 14 days when based on LMP; an ultrasound at 8 weeks has a range of plus/minus 5-7 days, at 20 weeks =, the range is 10 days, and after 26 weeks it's plus/minus 3 weeks!

The bottom line, your ultrasound at 8 weeks 5 days confirmed your original EDC (it was within 3 days), so I would use your LMP-derived dates to schedule tests (ALL the tests we do -- CVS, amnio, AFP testing -- are done within a range of gestational ages).

Hope this helps.

-- Kelly Shanahan, MD, FACOG S. Lake Tahoe, CA

note: Opinions here are for educational purposes only. This information is not intended to supplant the need for you to consult with your own physician. It cannot take the place of a face to face consultation and examination.

Next message: Kelly: "Re: miscarring :("
Previous message: Laurie: "Re: Hot flashes...."
In reply to: Loriann: "length of pregnancy confusion"
Next in thread: anonymous@obgyn.net: "Re: length of pregnancy confusion"

Women's Insurance Checklist from Auto Insurance Quote

use when must restrict search to only the women's health forum...
Enter search keywords:
	Returns per screen: Require all keywords: