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

Corpus cardiacum - endocrine organs, Corpus Cardiacum - Endocrine Organs ...

Corpus Cardiacum - Endocrine Organs We before mentioned that corpus cardiacum (pl. corpora cardiaca) is a neurohemal organ in insects. It is gland of neural origin. They are c

Embryo and endosperm, What is the difference between embryo and endosperm?

What is the difference between embryo and endosperm?

Lower invertebrates, adaptation of the phylum protozoa to its function

adaptation of the phylum protozoa to its function

List the benefits of lsm, List the benefits of LSM. Life style modifica...

List the benefits of LSM. Life style modification helps in the following ways: - Reduction of weight - Good sugar control - Good blood pressure control - Reduction

What purpose does sleep serve for the brain, What purpose does sleep serve ...

What purpose does sleep serve for the brain? A. We don't yet know full answer to this fundamental question however neuroscience is providing intriguing clues. It's increasingly

26 The human impact on the environment, 4 Put the following events in the m...

4 Put the following events in the most probable order. (a) Predatory birds poisoned by insecticide. (b) Trees sprayed with insecticide. (c) Earthworms eat leaves which f

What is the menstrual cycle, What is the menstrual cycle? The menstrual...

What is the menstrual cycle? The menstrual cycle is the periodic succession of interactions among hormones and the organs of the female reproductive system that, after the star

What is rationale for menu planning, What is Rationale for Menu Planning? ...

What is Rationale for Menu Planning? 'Menu', as we all know, is nothing but a list of dishes planned for preparation, and forms the very core of all activities in the food serv

What are mycotoxins, Q. What are mycotoxins? How are these produced and w...

Q. What are mycotoxins? How are these produced and where are these found? Are these naturally-occurring or produced? What is their significance? First what are mycotoxins?

State cryptobiosis and explain the function of it, State Cryptobiosis and e...

State Cryptobiosis and explain the function of it. A dormant, or suspended, state of animation which allows some animals to survive severe conditions like extremely low tempera

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