Define aortic regurgitation, Biology

Assignment Help:

Q. Define Aortic regurgitation?

Aortic regurgitation is a common valvular disease that may present chronically or acutely. Normally the integrity of valve closure depends upon the anatomy of valve leaflets and on three dimensional geometry of aortic root and sinuses of Valsalva. Wide variety of causes may lead to aortic regurgitation. Usually 50 per cent of valve replacements are due to diseases of valve and 50 per cent due to root disease. However, in India predominant cause of aortic valve replacement is still rheumatic.

Table : Causes of Aortic Regurgitation

                                                                  Acute                                             - Aortic dissection
                                                                                                                       - Trauma
                                                                                                                       - Leaflet perforation due to endocarditis
Chronic

                                                                 Valve leaflet disease                         - Congenital
                                                                                                                              Bicuspid
                                                                                                                              Unicuspid
                                                                                                                              Quadricuspid
                                                                                                                              Fenestrations
                                                                                                                         - Rheumatic
                                                                                                                         - Infective endocarditis
                                                                                                                         - Myxomatous degeneration
                                                                                                                         - Fibro calcific degeneration
                                                                                                                         - Systemic Lupus Erythematosus

                                                                                                                          - Rheumatoid
                                                                                                                          - Pharmacological agents

                                                                Aortic Root Disease                          - Hypertension
                                                                                                                          - Idiopathic root dilatation
                                                                                                                          - Marfan's Syndrome
                                                                                                                          - Aortic dissection
                                                                                                                          - Annuloaortic ecstasia
                                                                                                                          - Cystic medial necrosis
                                                                                                                          - Syphilis
                                                                                                                          - Ankylosing spondylosis
                                                                                                                          - Takayasu arteritis
                                                                                                                          - Psoriatic arthritis
                                                                                                                          - Reiter's Syndrome
                                                                                                                          - Relapsing Polychondritis
                                                                                                                          - Kawasaki disease
                                                                                                                          - Osteogeneses imperfecta
                                                                                                                          - Giant cell Arteritis
                                                                                                                          - Ehlers - Danlos Syndrome

Sub Valvular                                                                                                      - Discrete sub aortic stenosis

                                                                                                                          - VSD with aortic regurgitation due to prolapse

Majority of elderly hypertensive patients have trivial to mild aortic regurgitation due to varying degrees of root dilatation due to hypertension and degenerative changes in the valve. However, they are rarely of clinical importance and may not progress to severe aortic regurgitation.


Related Discussions:- Define aortic regurgitation

What are the main degenerative diseases of the heart, What are the main deg...

What are the main degenerative diseases of the heart? The major degenerative diseases of the heart are heart failure, arrhythmias, valvular heart diseases, coronary insufficie

Hydrosphere, The water on earth surface constitutes hydrosphere. About 75% ...

The water on earth surface constitutes hydrosphere. About 75% of earth surface is covered with water and 97% of that water is present in oceans, which is very salty. We are only

Show measurement of mitral valve, Q. Show Measurement of mitral valve? ...

Q. Show Measurement of mitral valve? Measurement of mitral valve and gradients across mitral valve are of importance in clinical decision making. Mitral valve area can be measu

What are the symptom of short bowel syndrome, Q. What are the Symptom of sh...

Q. What are the Symptom of short bowel syndrome? Diarrhoea is the main symptom of short bowel syndrome. Other symptoms include: • Anorexia • Steatorrhoea • Heart bum a

What is the definition of ecology explain, What is the Definition of Ecolog...

What is the Definition of Ecology explain? Scientists use the term ecology to refer to the study of the relationships between organisms, and the relationships between organism

Biophysics, you are setting up a pcr reaction to amplify a 1000 basepair lo...

you are setting up a pcr reaction to amplify a 1000 basepair long dna grament. in your 50 microliter reaction volume you have 100 nanogrM OD RWMPLrw sn QIRH eoufly 50/50 at/gc 100

Explain primary structure of proteins, Explain primary structure of protein...

Explain primary structure of proteins The primary structure of a protein having of the order in which amino acids are bonded to one another by a peptide bond.

Procedure for nelson somogyi method for glucose estimation, Explain Procedu...

Explain Procedure for nelson somogyi method for glucose estimation? Carry out the procedure following the steps enumerated herewith: 1. Label a series of  Folins tubes as bl

Spermatogenesis, Spermatogenesis In multicellular organisms the repro...

Spermatogenesis In multicellular organisms the reproductive process commences with the production of gametes. The gametes are the sex cells that develop inside the gonads, th

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