Define dissection of the aorta, Biology

Assignment Help:

Q. Define Dissection of the Aorta ?

The CXR may be abnormal in upto 80 per cent of patients. The abnormalities include:

i) Widened mediastinum: This is defined as a mediastinal width of more than 8 cm on the AP CXR. A tortuous aorta may be difficult to distinguish from a widened mediastinum. If in doubt, a good PA view is recommended.

ii) Abnormal aortic knob: Loss of definition or a focal widening of the mediastinal contour in the region of the aortic knuckle may be seen.

iii) Ring sign: This describes the displacement of the aorta, > 5 mm past the calcified aortic intima. The presence of this as a new finding on CXR, is considered a very specific radiographic sign.

iv) Left apical cap: This is a result of the pleural effusion that often accompanies an acute dissection.

v) Tracheal deviation and depression of left main stem bronchus or displacement of an NG tube.

Several studies have concluded that it is a combination of several of these findings that lead to suspicion of dissection.


Related Discussions:- Define dissection of the aorta

Explain microscopy - principles, Explain Microscopy - Principles, Use and M...

Explain Microscopy - Principles, Use and Maintenance? We start the Practicals in the Food Microbiology and Safety Course with an orientation to the microscope. This first Pract

What are coacervates, What are coacervates? Coarcervates are small stru...

What are coacervates? Coarcervates are small structures made of the aggregation of organic molecules under water solution. By electrical attraction the molecules join into bigg

Zoology, differences regarding Tiger Planaria and the Iridescent Phyllodoce...

differences regarding Tiger Planaria and the Iridescent Phyllodoce

How the arrangement of cells helps with tissue functioning, PROVIDE a speci...

PROVIDE a specific example for epithelial and connective tissues, how the arrangement of cells helps with tissue functioning?

Which is the normal sign of the electric charge, Which is the normal sign o...

Which is the normal sign of the electric charge among the two sides of the neuron plasma membrane? What is the potential difference (voltage) generated among these two sides? What

Eczema and dermatitis, Eczema and Dermatitis: Eczema and Dermatitis ar...

Eczema and Dermatitis: Eczema and Dermatitis are a common problem  all over the world. Their incidence is 2-3  per cent of all medical problems seen  in practice (about 30 per

Illustrate physiological evidence, Q. Illustrate Physiological Evidence ? ...

Q. Illustrate Physiological Evidence ? Physiological and biochemical evidence is providing data of increasing importance to plant systematic. Recently, it has become apparent t

Hybridoma, Hybridoma is the clone of plasmacytoma cells which secrete a mo...

Hybridoma is the clone of plasmacytoma cells which secrete a monoclonal antibody; commonly produced by the fusion of peripheral or splenic plasma cells taken from the immunized mo

Morphological differences between monocot and dicot plants, Q. What are the...

Q. What are the major morphological differences between monocot plants and dicot plants? The main separation criteria between monocots and dicots are: number of cotyledons (see

Determine the phospholipids of the membrane, Determine the phospholipids of...

Determine the phospholipids of the membrane The phospholipids of the membrane are arranged in a bilayer with their polar head groups on the exterior and the nonpolar hydrophobi

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