Explain arterial switch operation surgery, Biology

Assignment Help:

Explain Arterial Switch Operation Surgery?

This is the operation of choice for simple transposition of the great arteries as it ensures anatomical correction. The approach is through midline incision and median sternotomy. It is usually done with a high ascending aortic cannula and direct cannulation of SVC and IVC. Patient is cooled down to 18 to 25°C and pel-fusion flow reduced. There is no need for resorting to circulatory arrest.

Alternately, the operation could be done with single light atrial cannula and resorting to brief period of circulatory arrest. Heart is arrested by cold cardioplegic solution administered ante-grade through the aortic root. It could also be supplemented by retrograde cardioplegia through the coronary sinus.

The ductus is suture ligated and divided. Mobilisation of ascending aorta, inain and branch pulmonary arteries are done before cardio-pulmonary bypass. Large piece of pericardium is harvested and preserved for reconstruction of the pulmonary artery. The aorta is transacted above the coronary ostia. Pulmonary artery is transacted proximal to bifurcation. Coronary buttons are raised from their respective sinuses. They are re-implanted into the neo aorta, which was the previous pulmonary artery. A Le Compte manoeuvre is done by taking the pulmonary artery bifurcation anterior to the aorta. Two ends of the aorta are anastornosed - proximal pulmonary artery (neo aorta) to distal aortic segment.

PFO or ASD present is closed. At this stage the baby is rewarmed and aortic clamp released and heart allowed to beat. Right atrium is closed. Pulmonary artery is reconstiucted using two pericardial patches to fill up the sinuses from where coronary buttons were raised. Left atrial pressure monitoring line is inserted either through the appendage or through right superior Pulmonary vein.
Atrial and ventricular pacing wires are inserted.

Tran oesophageal echocardiogram will help in deciding adequacy of coronary circulation by assessing global and regional wall motion. The success of arterial switch operation depends on coronary arterial button transfer; which in turn varies according to the type of origin of coronary arteries in transposition of the great arteries.


Related Discussions:- Explain arterial switch operation surgery

Ecology and ecosystem, Ecology and Ecosystem The concepts of environme...

Ecology and Ecosystem The concepts of environment, ecology, ecosystem, energy flow and nutrient cycling in the foundation course on Science and Technology. As you are aware ec

What is the protein denaturation, Q. What is the protein denaturation? Is t...

Q. What is the protein denaturation? Is there any change in the major structure when a protein is denatured? Secondary, tertiary and quaternary structures of proteins are spati

Define the acute phase of spinal trauma disease, Define the Acute Phase of ...

Define the Acute Phase of spinal trauma Disease? Nutritional support should start within 3-5 days or as early as possible to prevent the onset of malnutrition and secondary il

Yersinia pestis, what the advantage of yersinia pestis

what the advantage of yersinia pestis

Explain the dietary management of sepsis and mods, Explain the Dietary Mana...

Explain the Dietary Management of Sepsis and MODS? Patients suffering from sepsis and/or resultant multiple system organ dysfunctions are critically ill and admitted in the int

What its population growth rate, A population has 350 births per 1000 indiv...

A population has 350 births per 1000 individuals and 320 deaths per 1000 individuals. 1. what its population growth rate? 2. Intrinsic rate of increase? 3. Doubling time? 4. Derive

Haemocyanin - respiratory pigments, Haemocyanin - Respiratory Pigments ...

Haemocyanin - Respiratory Pigments This pigment is found in several arthropods and molluscs. Haemocyanins do not consist of haee groups. The metal they consist of is copper, w

Informatics, Informatics  is the study of the application of computer and s...

Informatics  is the study of the application of computer and statistical techniques to the management of information. In the genome projects, informatics includes the development o

Neurochemistry of attention, Neurochemistry of Attention Different neur...

Neurochemistry of Attention Different neurotransmitters systems are implicated in attention. Cholinergic, dopaminergic and serotonergic systems play major roles in neurochemica

Illustrate the term cilia, Illustrate the term Cilia? A cellular hairli...

Illustrate the term Cilia? A cellular hairlike locomotory structure which comprises an extension of the plasma membrane surrounding a 9+2 organization of microtubules. Unlike f

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