Echocardiography, Biology

Assignment Help:

Echocardiographic evaluation should be performed in all patients with clinically suspected IE, including those with negative blood cultures.  Not only is TEE the preferred approach in patients with clinically suspected IE in whom TTE is suboptimal it is also the procedure of choice for imaging the pulmonic valve, patients with PVE (especially at the mitral site) and patients who are at high risk for intracardiac complications or those with sign of persistent or invasive infection despite adequate antimicrobial therapy.

The sensitivity of TTE for the detection of vegetations in NVE is less than 65 per cent, although its specificity is excellent. In contrast, in proven NVE the sensitivity for vegetation detection of TEE was 90 to 100 per cent, and in clinically suspected NVE, it ranged from 82 to 94 per cent. In patients with PVE, TTE is limited by the shadowing effect of the mitral valve prosthesis. The sensitivity of TEE for detecting vegetations in PVE, involving mechanical or bioprosthetic devices ranged from 80 to 96 per cent, whereas that of TTE was from 36 to 16 per cent.   Despite the sensitivity of TEE in detecting vegetations in patients with proven IE, echocardiography does not itself provide a definite diagnosis. Vegetations and valve dysfunction may be demonstrated, but determination of causality requires clinical or direct anatomical and microbiological confirmation.  Infectious vegetation cannot be distinguished from marantic lesions, nor can vegetations be distinguished from thrombus or pannus on prostheses. Further more, it is usually not possible to distinguish active from healed vegetations in NVE. Thickened valves, ruptured chordae or valve calcifications and nodules may be mistaken for vegetations, indicating the specificity limitations of echocardiography.


Related Discussions:- Echocardiography

High proportion of reticulocytes, A patient has a low red blood cell count,...

A patient has a low red blood cell count, and microscopic examination reveals an abnormally high proportion of circulating reticulocytes. Upon subsequent examination, the patient i

Explain rickets, Explain Rickets Rickets:- A condition in children du...

Explain Rickets Rickets:- A condition in children due to vitamin D deficiency.

Zoology, general characteristics of phylum chordata

general characteristics of phylum chordata

Define tests for the presence of exoenzymatic activity, Define Tests for th...

Define Tests for the Presence of Exoenzymatic Activity? Microorganisms require various micro- and macro-nutrients for energy production and growth. These are obtained from the

Restriction endonuclease, Suppose the restriction endonuclease HindIII cuts...

Suppose the restriction endonuclease HindIII cuts a6.0 kb linear piece of DNA into two fragments; an 800 bp fragment and a 5200 bp fragment..... Question: Suppose restriction

How bone density affect osseointegration, How Bone density affect Osseointe...

How Bone density affect Osseointegration The most important bone property is density which is influenced by factors such as patient age and genetics. Higher density bones have

Improvement of cereal proteins - mutual supplementation, Define Improvement...

Define Improvement of cereal proteins - Mutual supplementation? Improvement of cereal proteins: Cereals, in general, are limiting in lysine and threonine while legumes, milk, m

Define key concepts and facts on properties of monosaccharid, Define Key Co...

Define Key Concepts and Facts on Properties of Monosaccharides? 1. All monosaccharides are soluble in water. 2. All monosaccharides give Molisch's test. 3. Monosaccharides do n

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