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 the history of nutrition, Explain the History of Nutrition? Kno...

Explain the History of Nutrition? Knowledge of human nutritional needs and relationship between diet and health was placed on a modern scientific footing only since the 19th ce

Anatomical coordinate systems, Brain anatomical coordinate systems are the ...

Brain anatomical coordinate systems are the first potential point of confusion, as there are different ones due to the fact that research is conducted in different species where d

An experiment with a floating egg, An experiment with a floating egg Pl...

An experiment with a floating egg Place an egg in a glass of fresh water and view it. Next add salt to the water and see if you can float the egg. How does this relate to the f

Craninal nerves, Craninal nerves: Cranial nerves take their origin f...

Craninal nerves: Cranial nerves take their origin from different areas of brain  Some of them are sensory, some are motor and a few are mixed nerves. There are 12 pair

Culture negative endocarditis, In patients who have not received prior anti...

In patients who have not received prior antibiotics and who will ultimately have blood culture positive endocarditis, it is likely that 95 - 100 per cent of all cultures obtained w

Determine about the parameters of fitness, Determine about the Parameters o...

Determine about the Parameters of Fitness? There are five basic components of physical fitness, which involve heart, lungs, strength, endurance and flexibility. To improve the

Determine the importance of behavioural observations, Determine the importa...

Determine the importance of Behavioural observations Behavioural observations are often noteworthy to the extent that they involve alterations in the examiner's usual response

Determine the atomic number of element, A.    In order to determine the ato...

A.    In order to determine the atomic number of an element we need to know the number of protons in an atom. As we know that atom is neutral we can also take the number of electro

Show the properties of food, The food components are in the form of solids,...

The food components are in the form of solids, in solutions or in the form of colloids - sols or emulsions. The properties of these components determine the quality of food. The

What is the spontaneous generation hypothesis, What is the spontaneous gene...

What is the spontaneous generation hypothesis? The spontaneous generation hypothesys, or abiogenesis, asserts that life on earth has come from nonliving material. For instance,

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