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Heart failure with preserved ejection fraction (HFpEF) is a form of heart failure in which the ejection fraction – the percentage of the volume of blood ejected from the left ventricle with each heartbeat divided by the volume of blood when the left ventricle is maximally filled – is normal, defined as greater than 50%; [1] this may be measured by echocardiography or cardiac catheterization.
Modalities applied to measurement of ejection fraction is an emerging field of medical mathematics and subsequent computational applications. The first common measurement method is echocardiography, [7] [8] although cardiac magnetic resonance imaging (MRI), [8] [9] cardiac computed tomography, [8] [9] ventriculography and nuclear medicine (gated SPECT and radionuclide angiography) [8] [10 ...
This is defined as a left ventricular ejection fraction (LVEF) of 40% or less. About half of heart failure patients have a reduced ejection fraction. [2] Other types of heart failure are heart failure with mildly reduced ejection fraction (LVEF between 40% and 50%) and heart failure with preserved ejection fraction (LVEF 50% or higher). [1] [3]
Erhard Seminars Training, Inc. (marketed as est, though often encountered as EST or Est) was an organization founded by Werner Erhard in 1971 that offered a two-weekend (6-day, 60-hour) course known officially as "The est Standard Training". The purpose of the training was to use concepts loosely based on Zen Buddhism for self improvement. The ...
A continual improvement process, also often called a continuous improvement process (abbreviated as CIP or CI), is an ongoing effort to improve products, services, or processes. [1] These efforts can seek " incremental " improvement over time or "breakthrough" improvement all at once. [ 2 ]
Brooks discusses several causes of scheduling failures. The most enduring is his discussion of Brooks's law: Adding manpower to a late software project makes it later. Man-month is a hypothetical unit of work representing the work done by one person in one month; Brooks's law says that the possibility of measuring useful work in man-months is a myth, and is hence the centerpiece of the book.
Performance improvement is measuring the output of a particular business process or procedure, then modifying the process or procedure to increase the output, increase efficiency, or increase the effectiveness of the process or procedure. Performance improvement can be applied to either individual performance, such as an athlete, or ...
This was an emergency unscheduled meeting in response to a rapidly weakening economy, made in coordination with several other central banks around the world. Official statement: September 16, 2008 2.00% 2.25% 10-0 The FOMC left rates unchanged the day after the Bankruptcy of Lehman Brothers. Official Statement: August 5, 2008 2.00% 2.25% 10–1