Describe technique operation prosthetic valve endocarditis, Biology

Assignment Help:

Describe the Technique of Operation in prosthetic valve endocarditis?

The operative principle is drainage of abscess, removal of debris and valve rep or replacement to reverse haemodynamic abnormality. Any acquired defect like VSD ring abscess, fistula or aneurysm has to be repaired. In children congenital lesion is also rectified.

Availability of intra operative TEE is absolutely essential during surgery. Cardiopulmonary bypass with aortic and bicaval cannulae is instituted. Antegrac and retrograde cardioplegia are administered. Manipulation of heart is kept to a minimum for fear of embolism. For aortic valve endocarditis inspection of anterior mitral leaflet and chordae for drop lesions is a routine procedure. Mitra valve may be repaired and valve perforation could be closed with pericardial patch if infection is under contl-01.

When valve replacement is necessary, the valve is excised and careful check for abscess is done. If present it is drained and debridement done. Abscess that burrows deeper could cause aortoventricular or atrioventricular separation.

Interrupted sutures with pericardial patches are used to treat this and anchor the valve. Larger disruptions are managed with autologus or bovine pericardial patches. The advantage of a bioprosthesis over mechanical valve in preventing re infection has not been proved conclusively. However, for aortic prosthetic valve endocarditits a cryopreserved, free homograft is the best choice. In such cases if there is extensive abscess formation and disruption of aoi-to-ventricular continuity homograft aortic root replacement with re-implantation of coronaries is the preferred technique.

 


Related Discussions:- Describe technique operation prosthetic valve endocarditis

Contact guidance - modes of cell movement, Contact guidance - Modes of Cell...

Contact guidance - Modes of Cell Movement Besides chemical / ionic factors that regulate cell movement in developing embryos, physical factors as well appear to play a role in

Explain electron microscope, Explain Electron Microscope? Electron micr...

Explain Electron Microscope? Electron microscopes have higher magnification and resolving power than light microscopes.  What do we mean by magnification and resolving power? W

Define requirements of vitamin a for infants, Define requirements of Vitami...

Define requirements of Vitamin A for infants? As for vitamin A deficiency, requirement of vitamin A is the most easy to meet as it is abundantly present in green and yellow veg

Define poverty and ignorance - cause of anaemia is dietary, Define Poverty ...

Define Poverty and ignorance - cause of anaemia is dietary? Low purchasing power of the communities and their consequent inability to meet the nutrient requirements, even after

Which part of the skin is the pigment injected, Permanent tattoos are made ...

Permanent tattoos are made by injecting pigment into the skin. Into which part of the skin is the pigment injected, the epidermis or dermis?

Nerves found in human body, Motor nerves : Nerves which carry impulses fro...

Motor nerves : Nerves which carry impulses from brain or spinal cord to effector organs are called efferent or motor nerves. Stimulation of motor nerves makes the muscles to contr

Explain the skeletal system, Explain the Skeletal System? Skeletal Sys...

Explain the Skeletal System? Skeletal System: The support framework, or skeleton, in the human body is composed of mostly hard mineral substances. Unlike crustaceans or insec

The deficiency in hepatic glucose 6 phosphatase, Under fasting conditions, ...

Under fasting conditions, individuals with a deficiency in hepatic glucose 6 phosphatase cannot dephosphorylate glucose 6 phosphate generated from liver glycogenolysis. As a result

Membrane with the intention of delimits the nucleus, Q What is the name of ...

Q What is the name of the membrane with the intention of delimits the nucleus? To which component of the cell structure is that membrane contiguous? The nuclear membrane is als

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