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

Neural circuits, Neural Circuits The simple all are none activities of...

Neural Circuits The simple all are none activities of a single neuron can hardly provide the adaptability needed for the constant changes faced by the organism in its internal

Classification of multicellular animals - coelom, Classification of Multice...

Classification of Multicellular Animals - Coelom We know earlier that the pseudocoel gave animals specific selective benefits. Among other things, this fluid-tilled space wor

Shoot multiplication -clonal propagation, Shoot Multiplication -Clonal Prop...

Shoot Multiplication -Clonal Propagation This is the most important step with respect to the rate of propagation and genetic uniformity of the product. The most reliable and

Deficiency diseases-vitamin- d deficiency, Vitamin- D deficiency Anima...

Vitamin- D deficiency Animals obtain vitamin D either through the diet or when skin is exposed to solar radiation. The deficiency of vitamin D is associated with reduced absor

In what ways is water lost from the body, In what ways is water lost from t...

In what ways is water lost from the body? Water is lost from the body by a) Evaporation (lungs and skin), b) Urination and defaecation (faeces always have water).

Explain nutritive and non-nutritive sweeteners, Q. Explain Nutritive and No...

Q. Explain Nutritive and Non-Nutritive Sweeteners? Nutritive Sweeteners: We know some sweeteners like glucose, honey, molasses, fruit juice, dextrose, maltose, mannitol, sorbit

What are the muscle of the diaphragm, Would you expect the muscle fibers of...

Would you expect the muscle fibers of the tongue to be striated or smooth? What about the muscle of the diaphragm/ Explain your answer.

Metabolism, What is Metabolism ?  The  sum total of vital activities ( ...

What is Metabolism ?  The  sum total of vital activities ( movements , nutrition, growth, respiration, excretion , reproduction, behaviour ,etc.  Is the  life  of a living  bei

Explain cardiac prophylactic antibiotics, Cardiac Prophylactic antibiot...

Cardiac Prophylactic antibiotics can decrease the incidence of infection after cardiac surgery, and intraoperative redosing has been associated with adecreased risk of postoper

What are the major cells of the connective tissue proper, Q. What are the m...

Q. What are the major cells of the connective tissue proper? What is the name given to the intercellular material that surrounds these cells? The major cells of the connective

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