Prosthetic valve endocarditis, Biology

Assignment Help:

The risk of PVE is greatest during the initial 6 months after valve surgery (particularly during the initial 5 to 6 weeks) and thereafter declines to a lower but persistent risk (0.2 to 0.35 per cent per year) PVE has been called "early" when symptoms begin within 60 days of valve surgery and "late" with onset thereafter. These terms were established to distinguish early PVE that arose as a complication of valve surgery from late infection that was more likely community acquired. In fact, many cases with onset between 60 days and 1 year after surgery are likely to be nosocomial and, despite their delayed presentation, derive from events during the surgical admission. Data suggest that during the initial months after valve implantation, mechanical prostheses are at greater risk of infection than bioprosthetic valves but that after 12 months the risk of infection of bioprostheses exceeds that of mechanical valves.  

The intracardiac pathology of PVE differs notably from the largely leaflet-confined pathology of NVE. Infection on mechanical prostheses commonly extends beyond the valve ring into the annulus and periannular tissue as well as the mitral-aortic intravalvular fibrosa, resulting in ring abscesses, septal abscesses, fistulous tracts, and dehiscence of the prosthesis with hemodynamically significant  paravalvular regurgitation.


Related Discussions:- Prosthetic valve endocarditis

Production diseases, Pr o d u c t i o n Diseases The production...

Pr o d u c t i o n Diseases The production diseases, which were previously referred as metabolic diseases, include diseases like parturient paresis (milk fever), downer

What is a retrovirus, It is a category of viruses having RNA genome and rev...

It is a category of viruses having RNA genome and reverse transcriptase enzyme within virus cuspid.

Explain about the biosensors and caramelization, Explain about the Biosenso...

Explain about the Biosensors and Caramelization? Biosensors:  A device that utilizes biological materials to monitor the presence of several chemicals in a substance. Carame

Functions of kidney, FUNCTION S OF KIDNEY - 1.      Excretion of nitro...

FUNCTION S OF KIDNEY - 1.      Excretion of nitrogenous wastes. 2.      Maintenance of water balance or osmoregulation. 3.      Acid base balance or regulation of pH.

Explain the precautions for use of light microscope, Explain the Precaution...

Explain the Precautions for Use of Light Microscope? 1. Clean the lens system properly. 2. Use xylol only when necessary. 3. Never lower the body tube while looking throu

Explain elements of xylem in gymnosperms, The chief water conducting elemen...

The chief water conducting elements of xylem in gymnosperms are: 1. Vessels 2. Fibres 3. Transfusion tissue 4. Tracheids Tracheids

Define laser tweezers technology - pure culture techniques, Define Laser Tw...

Define Laser Tweezers Technology? In addition to above said classical methods, advance technologies can be used for obtaining pure cultures. Laser tweezers technology is useful

What is the formula of the net primary production, What is the formula of t...

What is the formula of the net primary production (NPP)? How does NPP relate to the energy pyramids? Net primary production is the gross main productivity less the organic mate

The human population in a malaria ridden area, How does a sickle cell carri...

How does a sickle cell carrier have a benefit over the rest of the human population in a malaria ridden area? Why is organ transplantation from another person generally unsucces

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