PREGNANCY-BIRTH Messages for January, 2003: Re: Ultrasound Sonogram Accuracy

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Re: Ultrasound Sonogram Accuracy

From: anonymous@obgyn.net
Fri, 24 Jan 2003 16:35:25 -0600 (CST)

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In reply to: Janice: "Re: Ultrasound Sonogram Accuracy"

Wendell, I think I know where the confusion is coming from. Ultrasound and doctors who "date" your pregnancy and tell you that you are 14 weeks 1 day are counting from the first day of your girlfriend's last menstrual period, which presumably is 2 weeks before she ovulated. So you and your girlfriend are counting 12 weeks from when you had sex on Oct. 22 but the doctor is counting from two weeks prior to that. So you all are actually EXACTLY on track. When doctors talk about 40 weeks of pregnancy (you are due at the end of 40 weeks) they are talking from the first day of your girlfriend's last menstrual period. I am 20 weeks pregnant right now according to all my doctors, but it has been only 18 weeks since my husband and I engaged in baby-making sex and actually conceived. It's really a bit kooky but that's just how the Medical People count. Got it? OK, good luck!!

At Fri, 24 Jan 2003, Janice wrote: >
>mine was off by two weeks the whole time
>
>At Thu, 23 Jan 2003, Alicia M. Lapidus M.D. wrote:
>>
>>At that gestational age the variability is + or - 1 week.
>>
>>At Thu, 23 Jan 2003, Wendell wrote:
>>>
>>>My girlfriend figured out late that she was pregnant.
>>>Our first sexual encounter was oct22, 02.
>>>We han an ultrasound on jan 14, 03 and they said she was 14.1 weeks.
>>>according to our calculations she would only be 12.3weeks.
>>>Im wondering if the margin of error is that great or is it a possibility
>>>it's not mine?
>>>Thanks,
>>>Wendell.
>>
>>--
>>Alicia M. Lapidus M.D.
>>Director Obgyn.net Latina
>>Chief of Staff Obstetrics, Hospital J. A. Fernández
>>Buenos Aires
>>Argentina
>>Note: opinions expressed here are for educational purposes
>> only and, as such, do not constitute a physician-patient
>> relationship. This information is not intended to supplant
>> the need for you to consult with your physician prior to
>> choosing therapeutic options and/or interventions.
>>
>> **Private emails cannot be entertained due to time
>> constraints; consequently, they will receive no response.
>>
>--
>Janice M Alford
>

Next message: Cheryl: "Re: Telling people to relax, does not help them get pregnant! It is an insult!!"
Previous message: cindy: "I am 9 weeks pregnant - can I take advil or motrin - anything but tylenol..."
In reply to: Janice: "Re: Ultrasound Sonogram Accuracy"

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