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Is this the same as HOCM? JFW | T@lk 22:08, 19 Apr 2004 (UTC)
This section should be moved to it's own page, or a subpage here. Dlodge 23:54, 11 January 2007 (UTC)
Probably worthwhile to point out these values are calculated (not measured, as in open-heart surgery or autopsy) using other physical values (pressure / flow velocity). Dlodge 04:05, 12 January 2007 (UTC)
Surely
It would be useful to put a comparison of aortic sclerosis and stenosis in this article, since they're heard in the same place but have different features and sequelae. 71.234.109.192 00:39, 15 October 2007 (UTC)rhetoric
Folk, the equation Gradient = 4(velocity)2 mmHg
is claimed to be a form of the Bernoulli equation,
v2/2+gh+p/ρ=constant .
This is my derivation.
The height term gh can be moved to the right hand side.
If height is assumed constant in the region of interest, a
second constant appears.
v2/2+p/ρ=constant-gh=constant'
Multiplying by ρ yields,
(ρ/2)v2+p=ρ*constant' .
If ρ is also a constant, the right hand side is a third constant.
(ρ/2)v2+p=constant
Now we consider two points on a streamline denoted by subscripts 1 and 2.
(ρ/2)v12+p1
= constant=(ρ/2)v22+p2
Rearranging terms yields,
p1-p2
= (ρ/2)(v22-v12) .
In some special cases, v12 will be negligible
compared to v22. For these cases this equation
applies.
p1-p2 = (ρ/2)(v22)
The density of blood is approximately 1 gm/cm3.
pressure of 1 mm Hg = γ(pressure of 1 mm of water)
= γ(0.1 gm/cm3)980 cm/s2
= γ 98 gm/cm s2.
Ie. 1 = (pressure of 1 mm Hg)/(γ 98 gm/cm s2)
Substituting the density of blood, multiplying by 1 and simplifying yields
this equation.
p1-p2 = (v2 s/cm)2 (1 mm Hg pressure/2646)
If velocity is measured in cm/s, units inside the first pair of parentheses cancel
and the result is pressure drop in mm Hg.
If s/cm is replaced with s/0.01 m the this equation results.
p1-p2 = (v2 s/m)2 (1 mm Hg pressure/0.2646)
Equivalently,
p1-p2 = 3.8(v2 s/m)2 (1 mm Hg pressure)
This suggests that the equation in the article is intended for
flow velocity measured in m/s.
I prefer to see this derivation rather than have the physiological
equation simply quoted. At the very least the latter should be
stated correctly without the units fudged. The terms "pressure
gradient" and "pressure drop" should be used appropriately.
PeterEasthope ( talk) 00:12, 29 December 2007 (UTC)
No hope of modifying risk with cholesterol reduction: http://content.nejm.org/cgi/content/full/359/13/1343 JFW | T@lk 23:18, 24 September 2008 (UTC)
I'm not an expert, so I thought I'd run this by the group first. The first citation is a 404. Is this the appropriate new URL? http://www.mountsinai.org/patient-care/health-library/diseases-and-conditions/aortic-stenosis -- Trakon ( talk) 16:24, 31 August 2011 (UTC)
Yes, where is the mention of it here? This article just deals with the calcification type stenosis, while the link in the bottom: http://www.gosh.nhs.uk/medical-conditions/search-for-medical-conditions/aortic-valve-stenosis/aortic-valve-stenosis-information/ clearly indicates the inborn valve defect.-- Triple5 ( talk) 04:30, 8 May 2014 (UTC)
NEJM doi:10.1056/NEJMra1313875 JFW | T@lk 21:54, 24 August 2014 (UTC)
There appears to be an error in line 10 of the second paragraph of this page. I have found no evidence (by scopus database) nor online articles that "male sex" increases the risk or causes aortic stenosis. Another point to be made is that "male sex" is a vague term. If the intention was 'is higher in the male sex' then perhaps I stand corrected and shall defer to your judgment. Iapteus ( talk) 03:05, 30 August 2015 (UTC)
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doi:10.1161/CIRCULATIONAHA.116.023997 JFW | T@lk 09:18, 29 November 2016 (UTC)
doi:10.1161/CIRCULATIONAHA.116.025457 JFW | T@lk 21:18, 15 May 2017 (UTC)
This is the
talk page for discussing improvements to the
Aortic stenosis article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find medical sources: Source guidelines · PubMed · Cochrane · DOAJ · Gale · OpenMD · ScienceDirect · Springer · Trip · Wiley · TWL |
This article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||
|
The following Wikipedia contributor has declared a personal or professional connection to the subject of this article. Relevant policies and guidelines may include
conflict of interest,
autobiography, and
neutral point of view.
|
Ideal sources for Wikipedia's health content are defined in the guideline
Wikipedia:Identifying reliable sources (medicine) and are typically
review articles. Here are links to possibly useful sources of information about Aortic stenosis.
|
Is this the same as HOCM? JFW | T@lk 22:08, 19 Apr 2004 (UTC)
This section should be moved to it's own page, or a subpage here. Dlodge 23:54, 11 January 2007 (UTC)
Probably worthwhile to point out these values are calculated (not measured, as in open-heart surgery or autopsy) using other physical values (pressure / flow velocity). Dlodge 04:05, 12 January 2007 (UTC)
Surely
It would be useful to put a comparison of aortic sclerosis and stenosis in this article, since they're heard in the same place but have different features and sequelae. 71.234.109.192 00:39, 15 October 2007 (UTC)rhetoric
Folk, the equation Gradient = 4(velocity)2 mmHg
is claimed to be a form of the Bernoulli equation,
v2/2+gh+p/ρ=constant .
This is my derivation.
The height term gh can be moved to the right hand side.
If height is assumed constant in the region of interest, a
second constant appears.
v2/2+p/ρ=constant-gh=constant'
Multiplying by ρ yields,
(ρ/2)v2+p=ρ*constant' .
If ρ is also a constant, the right hand side is a third constant.
(ρ/2)v2+p=constant
Now we consider two points on a streamline denoted by subscripts 1 and 2.
(ρ/2)v12+p1
= constant=(ρ/2)v22+p2
Rearranging terms yields,
p1-p2
= (ρ/2)(v22-v12) .
In some special cases, v12 will be negligible
compared to v22. For these cases this equation
applies.
p1-p2 = (ρ/2)(v22)
The density of blood is approximately 1 gm/cm3.
pressure of 1 mm Hg = γ(pressure of 1 mm of water)
= γ(0.1 gm/cm3)980 cm/s2
= γ 98 gm/cm s2.
Ie. 1 = (pressure of 1 mm Hg)/(γ 98 gm/cm s2)
Substituting the density of blood, multiplying by 1 and simplifying yields
this equation.
p1-p2 = (v2 s/cm)2 (1 mm Hg pressure/2646)
If velocity is measured in cm/s, units inside the first pair of parentheses cancel
and the result is pressure drop in mm Hg.
If s/cm is replaced with s/0.01 m the this equation results.
p1-p2 = (v2 s/m)2 (1 mm Hg pressure/0.2646)
Equivalently,
p1-p2 = 3.8(v2 s/m)2 (1 mm Hg pressure)
This suggests that the equation in the article is intended for
flow velocity measured in m/s.
I prefer to see this derivation rather than have the physiological
equation simply quoted. At the very least the latter should be
stated correctly without the units fudged. The terms "pressure
gradient" and "pressure drop" should be used appropriately.
PeterEasthope ( talk) 00:12, 29 December 2007 (UTC)
No hope of modifying risk with cholesterol reduction: http://content.nejm.org/cgi/content/full/359/13/1343 JFW | T@lk 23:18, 24 September 2008 (UTC)
I'm not an expert, so I thought I'd run this by the group first. The first citation is a 404. Is this the appropriate new URL? http://www.mountsinai.org/patient-care/health-library/diseases-and-conditions/aortic-stenosis -- Trakon ( talk) 16:24, 31 August 2011 (UTC)
Yes, where is the mention of it here? This article just deals with the calcification type stenosis, while the link in the bottom: http://www.gosh.nhs.uk/medical-conditions/search-for-medical-conditions/aortic-valve-stenosis/aortic-valve-stenosis-information/ clearly indicates the inborn valve defect.-- Triple5 ( talk) 04:30, 8 May 2014 (UTC)
NEJM doi:10.1056/NEJMra1313875 JFW | T@lk 21:54, 24 August 2014 (UTC)
There appears to be an error in line 10 of the second paragraph of this page. I have found no evidence (by scopus database) nor online articles that "male sex" increases the risk or causes aortic stenosis. Another point to be made is that "male sex" is a vague term. If the intention was 'is higher in the male sex' then perhaps I stand corrected and shall defer to your judgment. Iapteus ( talk) 03:05, 30 August 2015 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Aortic stenosis. 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, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
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: 18 January 2022).
Cheers.— InternetArchiveBot ( Report bug) 07:25, 16 October 2016 (UTC)
doi:10.1161/CIRCULATIONAHA.116.023997 JFW | T@lk 09:18, 29 November 2016 (UTC)
doi:10.1161/CIRCULATIONAHA.116.025457 JFW | T@lk 21:18, 15 May 2017 (UTC)