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 potential benefits of micro nutrients, Explain the Potential Be...

Explain the Potential Benefits of micro nutrients? The potential benefits of micro nutrients should also be taken into account when the nutrient allowances are defined for olde

Ionosinin ic pathway , how ionosinic pathway ric acid from ammonia forms ...

how ionosinic pathway ric acid from ammonia forms u

What does secondary productivity in an ecosystem indicate, a) What does sec...

a) What does secondary productivity in an ecosystem indicate? b) List any two factors by which productivity is limited in aquatic ecosystems

Amazonian butterflies, The Amazon rainforest in South America is a biodiver...

The Amazon rainforest in South America is a biodiverse ecosystem. There are large numbers of plant and animal species making up the food web, including over 350 species of predator

Anticoagulation, In patients with left ventricular failure and reduced ejec...

In patients with left ventricular failure and reduced ejection fractions, the risk of LV thrombus formation and systemic arterial embolization appears to be primarily in patients

Explain about the zygomycota - fungi, Explain about the Zygomycota - Fungi?...

Explain about the Zygomycota - Fungi? Fungi belonging to zygomycota are called zygomycetes. Hyphae in this sub-class are coenocytic. Asexual spores develop in sporangia at the

Differentiation - morphogenesis and tissue organisation, Differentiation - ...

Differentiation - Morphogenesis and Tissue Organisation It should be clear to you that a single cell, the fertilized egg, gives rise to various structures that we mentioned. S

How is water importance to life, How is water's importance to life reflecte...

How is water's importance to life reflected in the normal range of internal pH values that living things are likely to have?

Explain the obesity - problems of older children nutrition, Explain the Obe...

Explain the Obesity - Problems of Older Children and Adolescent Nutrition? One of the major problems is raising obesity rates (upto 30%) in urban, well-to-do school children.Th

How many alleles of genes that condition x-linked traits do, How many allel...

How many alleles of genes that condition X-linked traits do female and male individuals respectively present? For every correspondent gene to an X- linked trait women present a

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