Illustrate mitral valve orifice area, Biology

Assignment Help:

Q. Illustrate Mitral Valve Orifice Area?

The normal mitral valve orifice in an adult is 4-5cm2 when the valve is completely open in diastole. When the mitral valve orifice area is 1.0 cm2, then there will be a significant resting gradient across the valve and any requirement for increase cardiac output leads to an increase in LA and PCW pressure and results in Pulmonary edema. This therefore, represents "critical mitral valve orifice area".

The formula for calculating mitral valve orifice area is:

Where P = mean transmitral pressure gradient, and MVA = mitral valve area. Thus when the cardiac output is doubled, the transmitral gradient is quadrupled (if HR and DFP remain constant).


Related Discussions:- Illustrate mitral valve orifice area

Explain the bohr''s model, Explain the Bohr's model? Bohr's Model :  ...

Explain the Bohr's model? Bohr's Model :  Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an

Explain nongonococcal urethritis, Nongonococcal nonchlamydial urethritis an...

Nongonococcal nonchlamydial urethritis and cervicitis Nongonococcal urethritis (NGU) in men is often nonchlamydial as well. Possibly caused by Ureaplasma urealyticum, Mycoplas

Explain some weight loss during breastfeeding, Explain some Weight Loss dur...

Explain some Weight Loss during breastfeeding? Some women may want to return quickly to their pre-pregnancy weight. It is important to remember that some women will lose more,

Explain acyclovir, Explain Acyclovir Available in topical, oral, and in...

Explain Acyclovir Available in topical, oral, and intravenous (IV) formulations, acyclovir is used to treat herpes simplex virus (HSV) and varicella-zoster virus (VZV) infectio

Determine the effective spring constant of the molecule, A Molecule of DNA ...

A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionixed: negative on one end, positive on the other. The helical molecule acts like a spring and compres

Determine the function of monomeric enzymes, Determine the fuction of Monom...

Determine the fuction of Monomeric enzymes Monomeric enzymes include, pepsin, like the pancreatic serine proteases, plays a role in the digestion of proteins eaten by mammals.

Set them up using the punnett square, Two gene loci, A and B, assort indepe...

Two gene loci, A and B, assort independently, and alleles A and B are dominant over alleles a and b. Indicate the probability of producing: An aB phenotype from a cross AaBb x AaBB

Chorea, It is found in around 20 per cent cases of ARF and it is a late man...

It is found in around 20 per cent cases of ARF and it is a late manifestation occurring even 3 months after GAS pharyngeal infection. Chorea is triggered by emotional disturbances

Identify the abnormal protein, Identify the abnormal protein and state how ...

Identify the abnormal protein and state how the abnormal protein affects the function of the tissue.

Explain hydrolyases, Hydrolyases These enzymes (code EC 3) catalyze th...

Hydrolyases These enzymes (code EC 3) catalyze the hydrolytic cleavage of C-O, C-N, C-C and some other bonds, including phosphoric anhydride bonds.  Their trivial names  are f

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd