Search results
Results from the WOW.Com Content Network
The Oswestry Disability Index (ODI) is an index derived from the Oswestry Low Back Pain Questionnaire used by clinicians and researchers to quantify disability for low back pain and quality of life. This validated questionnaire was first published by Jeremy Fairbank et al. in Physiotherapy in 1980. [1] The current version was published in the ...
The Mitroflow valve, as first manufactured by Mitral Medical in 1982, had to be redesigned because it showed a failure mode similar to the first generation of pericardial valves. Since 1991 a modified version of this valve was introduced and has been used in a large number of patients. [56]
Real-time left ventricular (LV) pressure–volume loops provide a framework for understanding cardiac mechanics in experimental animals and humans. Such loops can be generated by real-time measurement of pressure and volume within the left ventricle. Several physiologically relevant hemodynamic parameters such as stroke volume, cardiac output ...
In cardiology, aortic valve area calculation is an indirect method of determining the area of the aortic valve of the heart. The calculated aortic valve orifice area is currently one of the measures for evaluating the severity of aortic stenosis. A valve area of less than 1.0 cm 2 is considered to be severe aortic stenosis. [1][2]
The Dor procedure is a medical technique used as part of heart surgery and originally introduced by the French cardiac surgeon Vincent Dor (b.1932). [1] It is also known as endoventricular circular patch plasty (EVCPP). In 1985, Dor introduced EVCPP as a viable method for restoring a dilated left ventricle (LV) to its normal, elliptical geometry.
1. Thus, the CHA 2 DS 2 -VASc score is a refinement of CHADS 2[8][10] score and extends the latter by including additional common stroke risk factors, that is, age 65–74, female gender and vascular disease. [11] In the CHA 2 DS 2 -VASc score, 'age 75 and above' also has extra weight, with 2 points. The maximum CHADS 2 score is 6, whilst the ...
Diagram of the human heart. Several adaptations of the Ross procedure have evolved, but the principle is essentially the same; to replace a diseased aortic valve with the person's own pulmonary valve (autograft), and replace the person's own pulmonary valve with a pulmonary valve from a cadaver (homograft) or a stentless xenograft.
In cardiac physiology, isometric contraction is an event occurring in early systole during which the ventricles contract with no corresponding volume change (isometrically). This short-lasting portion of the cardiac cycle takes place while all heart valves are closed. The inverse operation is isovolumetric relaxation diastole with all valves ...