Pathophysiology of mitral stenosis, Biology

Assignment Help:

Q. Pathophysiology of mitral stenosis?

Normally there is no pressure gradient between left atrium and the left ventricle during diastole. However, as the valve orifice size decreases pressure gradient develops across mitral valve in diastole and the mean left atrial pressure increases. Increase in left atrial pressure would cause increase in the pulmonary artery wedge pressure. Increase in pulmonary artery wedge pressure would cause interstitial congestion by way of Starling's forces and this presents as symptoms of dyspnoea. Further rise in pulmonary artery wedge pressure causes pulmonary edema and pulmonary arterial hypertension. In some patients there will be disproportionate rise in pulmonary artery pressure due to vasoreactivity of pulmonary arteries. As the pulmonary artery systolic pressure increases further the right ventricle fails and features of right heart failure would ensue.


Related Discussions:- Pathophysiology of mitral stenosis

Diseases of cardiovascular and haemopoietic system, D i s e a s e s ...

D i s e a s e s of Cardiovascular and Haemopoietic System Cardiovascular system maintains circulation of blood for normal exchange of fluid, electrolytes, oxygen and nut

What is the energy source used in active transport, What is the energy sour...

What is the energy source used in active transport through biological membranes? The energy essential for active transport (against the concentration gradient of the transporte

Observation of hemichordata, Q. Observation of Hemichordata ? • identif...

Q. Observation of Hemichordata ? • identify Balanoglossus as a hemicliordate and give its scientific and common name. • classify Balanogiossus LIP to the level of order.

Codon bias, Codon Bias  is the tendency for an organism or virus to make us...

Codon Bias  is the tendency for an organism or virus to make use of certain codons more than the others to encode a particular amino acid. A significant detrminant of codon bias is

Metamorphosis, Metamorphosis The phenomenon of metamorphosis is descri...

Metamorphosis The phenomenon of metamorphosis is described as a process during development which involves a remarkable change in morphology and physiology of the larva, so tha

Can obesity causes the cardiovascular disease, Q. Can Obesity causes the ca...

Q. Can Obesity causes the cardiovascular disease? As you know obesity or excessive weight is the primary cause of cardiovascular disease. It is an independent risk factor for h

Example of a fixed joint, Give one example in each case of (a) a fixe...

Give one example in each case of (a) a fixed joint, (b) a ball and socket joint, (c) a hinge joint.   (a) The bones of the skull, the junction of pelvic gi

Define the antigen-presenting cells of the immune system, Q. What are the a...

Q. What are the antigen-presenting cells of the immune system? The antigen-presenting cells of the immune system also known as APC cells are cells that do digestion and phagocy

How does the synthetic theory of evolution explain this fact, In hospitals ...

In hospitals where many tuberculosis patients are treated the population of the tuberculosis mycobacteria may be constituted of multiresistant (to antibiotics) strains. How does th

Protein prediction., I am trying to get help on the creation of a dataset f...

I am trying to get help on the creation of a dataset for protein prediction in matlab

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