![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||
|
![]() |
Daily pageviews of this article
A graph should have been displayed here but
graphs are temporarily disabled. Until they are enabled again, visit the interactive graph at
pageviews.wmcloud.org |
This article needs one or more references to cover the content, added the tag. -- FloNight 04:08, 23 November 2005 (UTC)
I dont think you understand this list. These are ways to judge the gestational age of a newborn baby that have been widely used in medical practice in the last 50 years. I do not understand how a woman's ability to guess when she might be ovulating makes it possible to judge a gestational age many months later to the degree that simply knowing the LMP provides. At any rate, it has not been widely used. Where did you get this? alteripse 17:31, 4 Jun 2005 (UTC)
Your method is basically a way to know probable date of conception. I suppose we could turn this article into a list of unusual ways for a mother to know when a baby was conceived (i.e., the date father was home on leave, or the date of the credit card charge for the fancy dinner after which, or the date of the police report of the rape, or the date of the ovulation induction injection, or the date of the artificial insemination, etc...), but I think it would be a better article if we don't. In actual practice, in the middle of a pregnancy or when a baby is born, the common ways that gestational age is estimated or corroborated are by LMP, u/s, or maturational exam, none of which are perfect. Apples and oranges. Sorry you thought it was rude, that was why I went to the talk page second time. alteripse 18:34, 4 Jun 2005 (UTC)
I'm not trying to be rude, but you are missing the point: once the probable date of conception is known by any method, estimating gestational age is trivial. Your method is one of an infinite number of ways a woman might know when she got pregnant. All of them are equivalent to "mother's knowledge of date of conception" and perhaps we should change item 1 in the list to say "probable date of conception" instead of "probable date of intercourse". Would you then feel that your method was included? The whole point of the initial version of the list was that a woman often does not know exactly when she conceived. There are then 3 commonly used ways of guessing how far along the pregnancy is, or how mature the fetus or newborn is: LMP, u/s, exam of infant. While each is obviously imperfect and has sources of error, these are still the commonly used ways of judging gest age if a woman doesn't know when she got pregnant. Do you get it now? alteripse 19:26, 4 Jun 2005 (UTC)
I have always read that gestational age is the age from conception (which this article states), and thus is, on average, two weeks shorter than the pregnancy length from last menstrual period (LMP). This article also states that an average pregnancy has a gestation of 40 weeks - I thought this was the average time from LMP, making the actual gestational period 38 weeks?
This article is the only place I can find Gestational Age defined as age from conception:
NIH-
http://www.nlm.nih.gov/medlineplus/ency/article/002367.htm
Gestational age is the time measured from the first day of the woman's last menstrual cycle to the current date and is measured in weeks. A pregnancy of normal gestation is approximately 40 weeks, with a normal range of 38 to 42 weeks.
WebMD--i http://www.webmd.com/hw/health_guide_atoz/tn5878.asp
Gestational age is the number of weeks and days a fetus has developed since the beginning of the pregnancy, or gestation. A pregnancy is formally considered as beginning on the first day of the mother's last menstrual period (LMP).
American Pregnancy Association-
http://www.americanpregnancy.org/duringpregnancy/calculatingdates.html
Gestational age, or the age of the baby, is calculated from the first day of the mother's last menstrual period.
I'm not an expert by any means so I won't change the actual article but I am interested in the discrepancy.
In fact, the wikipedia page on pregnancy doesn't even define gestational age this way
I propose removing the 3rd sentence. The source itself says "The term "conceptual age" is incorrect and should not be used," and goes on to say the situation where 'conception' or implantation is known is assisted fertilization. In the US, IVF only accounts for 1% of births. This sentence is confusing and unnecessary. Anyway, normally it is the other way around: you can estimate the date of fertilization and implantation based on the LMP. I'd say we should replace the sentence with "Gestational age is approximately 2 weeks older than when fertilization took place". - Andrew c 02:46, 31 January 2007 (UTC)
After some discussion with two MD's, I corrected the three following points because I think they are against what is said in the references mentioned. (I think it's important to note that this is only a definition, not realy an "age".)
I still think the article begins with an error.
I like the intro quite a bit now. Nice work to everyone who has been contributing.
My remaining concern is with the section The gestational age of an individual infant can be more accurately estimated from:, which contradicts the opening statement that gestational age is always calculated from LMP. Maybe that second section needs to be edited to talk about "adjusting" gestational age, instead of "more accurately estimating"? I'm not confident enough in how the term is used medically to make the edits myself. Lyrl Talk C 00:31, 21 February 2007 (UTC)
Regarding the last sentence: "The gestational age of children conceived by in vitro fertilization is known to the hour" Don't you mean the developmental age? since the LMP would be known "to the hour" in both cases or, not known in the "in-vitro" case if the patient has hormonal or other cause for menstrual irregularities (cause of infertility)—The preceding
unsigned comment was added by
142.21.15.115 (
talk •
contribs) 16:13, 17 July 2007.
There are two definitions of "gestational age" in common use:
Stedman's is the best I've found.
Unfortunately, the current Wikipedia article gives only the obstetricians' definition. The embryologists' definition, which counts gestational age as the age from conception/fertilization, is at least as commonly used.
Worse yet, the current Wikipedia article says the embryologists' definition is wrong: "The gestational age should not be confused with the fertilization age..."
Here are some more online dictionary definitions. Some use the obstetricians' definition, more use the embryologists' definition, and some confuse the two:
The bottom line is that if an obstetrician uses the term "gestational age" he probably means from LMP, but most others use the term as a synonym for fertilization age. This article needs to be fixed to reflect the fact that there are actually two different definitions in common use. NCdave ( talk) 16:38, 15 March 2008 (UTC)
This article is about "gestation age", the infobar contains a figure with definitions for "Birth weight and gestational age", the definitions all correspond to different birth weights. This kind of information is not really specifically about "gestational age", and is kind of distracting. Is there a better figure which sums up "gestational age" (especially since there are so many different definitions associated with "gestational age") and does NOT include birth weights? Or should the article focus on (and be retitled to) "gestational age and birth weight"? -- 74.179.122.10 ( talk) 16:38, 26 January 2012 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Gestational age. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 07:21, 15 October 2017 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Gestational age. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 06:52, 27 December 2017 (UTC)
I'm repeatedly coming across refs of GA meaning embryonic age rather than LMP in other anglophone countries, e.g. Canada here. [5] So I moved the article to an (obstetrics) dab. Often it's hard to tell which def a source is using, but when 1st trimester is defined as 12 weeks (as in the EU), they're presumably counting from either fertilization (e.g. Canada) or implantation (e.g. Mexico, WHO, FIGO) — kwami ( talk) 02:12, 27 July 2022 (UTC)
Moved as proposed. After extended time for discussion, there is a sufficient consensus to support this move. Editors are advised to therefore adjust the articles as needed to provide the clearest access to information and terminology to the readers. BD2412 T 02:52, 29 August 2022 (UTC)
Gestational age (obstetrics) → Gestational age – It is inappropriate for Foo to redirect to Foo (disambiguator): it should be the other way round. The article currently at Gestational age (obstetrics) is the only article with that title and if it is the primary topic for "Gestational age" then it should be moved to Gestational age. If it is not the primary topic then there should be a disambiguation page at Gestational age (with 2 entries: Gestational age (obstetrics) and Embryonic age). One or the other: not the current sitution. Pinging recent editors @ Kwamikagami:, @ R'n'B:, @ Swpb:. Shhhnotsoloud ( talk) 08:50, 10 August 2022 (UTC) — Relisting. – robertsky ( talk) 15:05, 17 August 2022 (UTC)
![]() | This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||
|
![]() |
Daily pageviews of this article
A graph should have been displayed here but
graphs are temporarily disabled. Until they are enabled again, visit the interactive graph at
pageviews.wmcloud.org |
This article needs one or more references to cover the content, added the tag. -- FloNight 04:08, 23 November 2005 (UTC)
I dont think you understand this list. These are ways to judge the gestational age of a newborn baby that have been widely used in medical practice in the last 50 years. I do not understand how a woman's ability to guess when she might be ovulating makes it possible to judge a gestational age many months later to the degree that simply knowing the LMP provides. At any rate, it has not been widely used. Where did you get this? alteripse 17:31, 4 Jun 2005 (UTC)
Your method is basically a way to know probable date of conception. I suppose we could turn this article into a list of unusual ways for a mother to know when a baby was conceived (i.e., the date father was home on leave, or the date of the credit card charge for the fancy dinner after which, or the date of the police report of the rape, or the date of the ovulation induction injection, or the date of the artificial insemination, etc...), but I think it would be a better article if we don't. In actual practice, in the middle of a pregnancy or when a baby is born, the common ways that gestational age is estimated or corroborated are by LMP, u/s, or maturational exam, none of which are perfect. Apples and oranges. Sorry you thought it was rude, that was why I went to the talk page second time. alteripse 18:34, 4 Jun 2005 (UTC)
I'm not trying to be rude, but you are missing the point: once the probable date of conception is known by any method, estimating gestational age is trivial. Your method is one of an infinite number of ways a woman might know when she got pregnant. All of them are equivalent to "mother's knowledge of date of conception" and perhaps we should change item 1 in the list to say "probable date of conception" instead of "probable date of intercourse". Would you then feel that your method was included? The whole point of the initial version of the list was that a woman often does not know exactly when she conceived. There are then 3 commonly used ways of guessing how far along the pregnancy is, or how mature the fetus or newborn is: LMP, u/s, exam of infant. While each is obviously imperfect and has sources of error, these are still the commonly used ways of judging gest age if a woman doesn't know when she got pregnant. Do you get it now? alteripse 19:26, 4 Jun 2005 (UTC)
I have always read that gestational age is the age from conception (which this article states), and thus is, on average, two weeks shorter than the pregnancy length from last menstrual period (LMP). This article also states that an average pregnancy has a gestation of 40 weeks - I thought this was the average time from LMP, making the actual gestational period 38 weeks?
This article is the only place I can find Gestational Age defined as age from conception:
NIH-
http://www.nlm.nih.gov/medlineplus/ency/article/002367.htm
Gestational age is the time measured from the first day of the woman's last menstrual cycle to the current date and is measured in weeks. A pregnancy of normal gestation is approximately 40 weeks, with a normal range of 38 to 42 weeks.
WebMD--i http://www.webmd.com/hw/health_guide_atoz/tn5878.asp
Gestational age is the number of weeks and days a fetus has developed since the beginning of the pregnancy, or gestation. A pregnancy is formally considered as beginning on the first day of the mother's last menstrual period (LMP).
American Pregnancy Association-
http://www.americanpregnancy.org/duringpregnancy/calculatingdates.html
Gestational age, or the age of the baby, is calculated from the first day of the mother's last menstrual period.
I'm not an expert by any means so I won't change the actual article but I am interested in the discrepancy.
In fact, the wikipedia page on pregnancy doesn't even define gestational age this way
I propose removing the 3rd sentence. The source itself says "The term "conceptual age" is incorrect and should not be used," and goes on to say the situation where 'conception' or implantation is known is assisted fertilization. In the US, IVF only accounts for 1% of births. This sentence is confusing and unnecessary. Anyway, normally it is the other way around: you can estimate the date of fertilization and implantation based on the LMP. I'd say we should replace the sentence with "Gestational age is approximately 2 weeks older than when fertilization took place". - Andrew c 02:46, 31 January 2007 (UTC)
After some discussion with two MD's, I corrected the three following points because I think they are against what is said in the references mentioned. (I think it's important to note that this is only a definition, not realy an "age".)
I still think the article begins with an error.
I like the intro quite a bit now. Nice work to everyone who has been contributing.
My remaining concern is with the section The gestational age of an individual infant can be more accurately estimated from:, which contradicts the opening statement that gestational age is always calculated from LMP. Maybe that second section needs to be edited to talk about "adjusting" gestational age, instead of "more accurately estimating"? I'm not confident enough in how the term is used medically to make the edits myself. Lyrl Talk C 00:31, 21 February 2007 (UTC)
Regarding the last sentence: "The gestational age of children conceived by in vitro fertilization is known to the hour" Don't you mean the developmental age? since the LMP would be known "to the hour" in both cases or, not known in the "in-vitro" case if the patient has hormonal or other cause for menstrual irregularities (cause of infertility)—The preceding
unsigned comment was added by
142.21.15.115 (
talk •
contribs) 16:13, 17 July 2007.
There are two definitions of "gestational age" in common use:
Stedman's is the best I've found.
Unfortunately, the current Wikipedia article gives only the obstetricians' definition. The embryologists' definition, which counts gestational age as the age from conception/fertilization, is at least as commonly used.
Worse yet, the current Wikipedia article says the embryologists' definition is wrong: "The gestational age should not be confused with the fertilization age..."
Here are some more online dictionary definitions. Some use the obstetricians' definition, more use the embryologists' definition, and some confuse the two:
The bottom line is that if an obstetrician uses the term "gestational age" he probably means from LMP, but most others use the term as a synonym for fertilization age. This article needs to be fixed to reflect the fact that there are actually two different definitions in common use. NCdave ( talk) 16:38, 15 March 2008 (UTC)
This article is about "gestation age", the infobar contains a figure with definitions for "Birth weight and gestational age", the definitions all correspond to different birth weights. This kind of information is not really specifically about "gestational age", and is kind of distracting. Is there a better figure which sums up "gestational age" (especially since there are so many different definitions associated with "gestational age") and does NOT include birth weights? Or should the article focus on (and be retitled to) "gestational age and birth weight"? -- 74.179.122.10 ( talk) 16:38, 26 January 2012 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Gestational age. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 07:21, 15 October 2017 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Gestational age. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, you may follow the instructions on the template below to fix any issues with the URLs.
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 06:52, 27 December 2017 (UTC)
I'm repeatedly coming across refs of GA meaning embryonic age rather than LMP in other anglophone countries, e.g. Canada here. [5] So I moved the article to an (obstetrics) dab. Often it's hard to tell which def a source is using, but when 1st trimester is defined as 12 weeks (as in the EU), they're presumably counting from either fertilization (e.g. Canada) or implantation (e.g. Mexico, WHO, FIGO) — kwami ( talk) 02:12, 27 July 2022 (UTC)
Moved as proposed. After extended time for discussion, there is a sufficient consensus to support this move. Editors are advised to therefore adjust the articles as needed to provide the clearest access to information and terminology to the readers. BD2412 T 02:52, 29 August 2022 (UTC)
Gestational age (obstetrics) → Gestational age – It is inappropriate for Foo to redirect to Foo (disambiguator): it should be the other way round. The article currently at Gestational age (obstetrics) is the only article with that title and if it is the primary topic for "Gestational age" then it should be moved to Gestational age. If it is not the primary topic then there should be a disambiguation page at Gestational age (with 2 entries: Gestational age (obstetrics) and Embryonic age). One or the other: not the current sitution. Pinging recent editors @ Kwamikagami:, @ R'n'B:, @ Swpb:. Shhhnotsoloud ( talk) 08:50, 10 August 2022 (UTC) — Relisting. – robertsky ( talk) 15:05, 17 August 2022 (UTC)