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Doppler echocardiojgraphy measures blood flow velocities and direction of blood flow in the heart add great vessels. The characteristics of blood flow are evaluated using both audio information and a graphic display of the Doppler spectral analysis. Qualitative and quantitative Doppler information may aid in the non-invasive assessment of:
A) Valvular Abndrmalities
Stenosis-as inpicated by increased blood flow velocity and turbulence beyond an obsbction.
Regurgitation-detection of high velocity turbulent retrograde flow in cardiac chambeb proximal to be regurgitant valve.
B) Congenital Catdiac Defects
Shunt Lesions4etection of flow across a septa1 defect or from a patent ductus arteriousius and quantification of the degree of shunting. C) Cardiac funcdon
Which of the following serves as a controlled variable in a negative feedback system? A. Levels of hydrogen ions in the interstitial spaces of the brainstem. B. Blood plasma
nutrition in paramecium
LAMPBRUS H CHROMOSOMES Discovered by Ruckert . Lampbrush Chromosomes were seen in Oocytes of several different animals like shark, amphibians, reptiles and birds. (Most
Gills - Respiration Gills are highly vascularised extensions of gas exchange membranes. The simple type may be extension of the body surface as in sea-slugs, sea stars and ma
BLOO D CLOTTING - It is a nature's device to check the excessive loss of blood from an injury. Bleeding time is 1-3 minutes. Clotting time is 2-6 minutes. Process of
Group specificity Some enzymes prefer a specific functional group to be present\%on the substrate molecules. Example:- alcohol dehydrogenase acts on alcohols having -OH gr
Medical and First Aid - Factors Affecting Occupational Health Depending on the type of work the industry must make arrangement for readily available medical facility. A nearby
Formation of Vegetative and Generative Cells The division of a pollen grain results in two unequal cells-the vegetative cell and the generative cell. The pollen grain is herea
Name TWO choices of microscope and stain (if stain should be used) that you could use to view each of the following. For example, to view human cheek cells you could use (1) bright
For patients with end-stage heart failure, cardiac transplantation has become a promising therapy especially with the advent of immunosuppressive therapy and more careful screenin
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