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

Why in the f1 generation is one of the colors missing?, Considering the hyb...

Considering the hybridization in a trait like the color of the flowers of a given plant species (red/yellow) conditioned by a pair of different alleles in relation to complete domi

Conducting system of the heart, The fibrous rings of the four valves of the...

The fibrous rings of the four valves of the heart are continuous with each other. They not only form the basis for the attachment of the corresponding valve cusps but also form an

protozoa, explain protozoa taxonom

explain protozoa taxonomy

What is the evolutionary importance of pteridophytes, Q. What is the evolut...

Q. What is the evolutionary importance of pteridophytes? As the first pteridophytes, tracheophytes were also the first plants to extensively colonize the terrestrial environmen

What is the significance of lignin for the xylem formation, What is the sig...

What is the significance of lignin for the xylem formation? Lignin is vital because it is deposited on the cell wall of the xylem cells providing impermeability and rigidity to

Risk during crown removal-endodontics principles, Risk during crown removal...

Risk during crown removal -Tooth inadvertently extracted using a crown\bridge remover . -Endodontic therapy was performed , and the tooth was replanted , a procedure known

How to removes hydrogen from fatty acids, Suppose you treated butter with a...

Suppose you treated butter with a fatty acid desaturase, an enzyme that removes hydrogen from fatty acids and creates double bonds. What would happen?

Stomata - water loss, Stomata - Water Loss The cross-section of a leaf...

Stomata - Water Loss The cross-section of a leaf shown in Figure shows the position of a typical stoma (plural stomata) which however, differs from species to species, with re

What are the typical fauna of the temperate forests, What are the typical v...

What are the typical vegetation and the typical fauna of the temperate forests? In the temperate forest deciduous trees predominate. Mammals are originated in great number, as

Eggs of hen, EGG S OF HEN It is a meiolecithal egg which is oval. T...

EGG S OF HEN It is a meiolecithal egg which is oval. The animal pole is found in the form of a small germinal disc. The vegital pole has two types of yolk viz. White yol

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