Talk:Ejection fraction

message: Is it time to move this to left ventricular ejection fraction, with a redirect from ejection fraction? Hugh2414 18:46, 20 Sep 2004 (UTC)
replies: text: Though the term most often refers to the left ventricular value, ejection fraction equally applies to the right ventricle, no? --David Iberri (talk) 00:48, 15 February 2006 (UTC)

text: I've mentioned both RV and LF ejection fractions in the article, noting that when not qualified, EF usually refers to LVEF. Cheers, David Iberri (talk) 05:04, 19 February 2006 (UTC)
replies: text: Leslie Beben chiming in. EF is probably a good estimate of the work efficiency of electrical and mechanical systole. EF lends itself readily to mathematical derivations of stroke volume. The difference between end diastolic volume and end systolic volume is readily applied to both SV and EF. minV vs. maxV are described as similar variables of myocardial work. Echocardiography has allowed an inexpensive and noninvasive means of illuminating the math in myocardial work. Carried a step further, one can appreciate that the inverse of EF is the difference between end systolic volume and end diastolic volume. This represents the injection fraction (IF). IF is probably a good estimate of diastole and the subject of another submission.   —Preceding unsigned comment added by 24.211.109.44 (talk) 02:19, 14 October 2007 (UTC)

text: Agree that LVEF is a better term than EF as long as one acknowledges the implied application of RVEF, perhaps best elaborated as a pulmonary determinant of myocardial performance.  —Preceding unsigned comment added by Lbeben (talk • contribs) 03:37, 21 October 2007 (UTC)
thread_title: Move to [[left ventricular ejection fraction]]?

message: I am suprised there is nothing in here about abnormalities in regards to EF and problems that result from those high/low EF.  —Preceding unsigned comment added by 98.85.140.145 (talk) 00:59, 3 August 2010 (UTC)
thread_title: Problems with EF

message: "The QT interval as recorded on a standard Electrocardiogram is generally agreed to be an exemplary display of depolarization of the ventricles. Widening of the QT interval is a reliable and inexpensive method in determination of mismatched flow states between the RV and LV."
This paragraph seems to be a complete non sequitur in this section. Perhaps someone knowledgeable can delete or amend it.154.5.40.122 (talk) 14:50, 22 November 2011 (UTC)
thread_title:  Normal Values 

message: In places this article reads like a patient information leaflet, which has made a problematic article worse. Whoever added things like "talk to your doctor about..." needs to read wp:MEDMOS. Lesion (talk) 02:08, 10 April 2013 (UTC)
thread_title:  Recent edits added to problems 

message: While there isn't a section in wp:medmos on things like ejection fraction (which is what, physiology? medical phenomena?), i propose the following structure for this page, based on extension from the outlines for "Signs or symptoms" and "Medical tests":
*Top/Overview/Intro
*Medical uses
*Physiology
**Normal values
**Physics
*Clinical significance, with pathophysiology
*History
*Other animals
I'll work towards reorganizing with this in mind. Other's input appreciated.
BakerStMD T|C 15:36, 18 January 2015 (UTC)
replies: text: I have a draft at user:Bakerstmd/Ejection fraction. Please leave your comments on that draft here.  BakerStMD T|C 22:57, 18 January 2015 (UTC)
thread_title:  Reorganization 

message: What is "(Table [null 3.1])"? --Guy Macon (talk) 23:49, 15 May 2018 (UTC)
thread_title:  Heart failure categories section 

message: In the first sentence Ejection fraction is defined as "the volumetric fraction (or portion of the total) of fluid (usually blood) ejected from a chamber (usually the heart) with each contraction (or heartbeat)." I think this definition is very misleading, as it is not the portion of the TOTAL blood, it is the portion of the AMOUNT LEFT OVER in the ventricle. The denominator in the fraction is the End Diastolic Volume, not the total blood in the ventricle pre-systole, e.g. at an ejection fraction of 50%, if the stroke volume is 50 arbitary units, and the end diastolic volume is 100 arbitary units, then 50 units were ejected leaving 100 units left, then originally there was 150 units of blood in the ventricle in the moments before contraction.
This is a common mistake.  — Preceding unsigned comment added by 94.175.24.89 (talk) 01:23, 24 January 2020 (UTC)
thread_title:  Definition of Ejection Fraction 

message: — Assignment last updated by Ftaylor4 (talk) 23:53, 20 September 2022 (UTC)
thread_title: Wiki Education assignment: Technical and Scientific Communication

message: On June 13, 2023,  added the below unsigned statement to #Reorganization above.
And on June 16, 2023, Lbeben added the below unsigned statement to #Minimum EF to sustain life.
I've removed them from those old postings, but since they do seem to be about the topic of the article, added them back here. SchreiberBike | ⌨  20:06, 17 June 2023 (UTC)
replies: text: Schreiber Bike this is essentially pure mathematics. Why should theory be subject to any license or patent? lbeben 03:21, 25 June 2023 (UTC)
thread_title: Two recent comments