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

Briefly explain about phase of the plasmodium life cycle, Q. To which phase...

Q. To which phase of the plasmodium life cycle do the typical chills and fever of malaria correspond? The typical fever and chills episodes of malaria correspond to the phase w

Explain the compartments of body water, Explain the Compartments of Body Wa...

Explain the Compartments of Body Water? Within the body, water is found in two major compartments. These are: - The intracellular compartment (inside the cell) - The extr

Expression of variability, In the previous sub-section we discussed the pos...

In the previous sub-section we discussed the possible ways by which variabiliti can, be generated. We shall now examine one instance that illustrates the consequence of variability

Amphetamines, AMPHE T AMINE S - Commonly called pep pills or anti...

AMPHE T AMINE S - Commonly called pep pills or antisleep drugs. They increase physical & mental performance. Taken by truck drivers, student & night workers to keep

What is chemical disinfection, Q. What is Chemical disinfection? Chemic...

Q. What is Chemical disinfection? Chemicals are added to waste to kill or inactivate the pathogens it contains, this treatment usually results in disinfection rather than steri

Viruses, are viruses cellular organisms

are viruses cellular organisms

Explain treatment options for ailing and failing implants, Treatment option...

Treatment options for ailing and failing implants are varied. The clinician should start conservatively and progress to more aggressive therapy. The overall goal of therapy is

Cells, Where do the light reactions occur in prokaryotic and eukaryotic cel...

Where do the light reactions occur in prokaryotic and eukaryotic cells?

Posterior leaflet-technique of operation, Posterior Leaflet: In the poste...

Posterior Leaflet: In the posterior leaflet a quadrangular excision of the sector involved in the prolapse is done. This may be up to 15-20 per cent of the leaflet. The remaining

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