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

Genotype for each individual, The allele that causes albinism (p) is recess...

The allele that causes albinism (p) is recessive to the allele for normal pigmentation (P). A normal woman whose father is an albino marries an albino man whose parents are both no

Explain bidirectional glenn shunt under cardiopulmonary, Explain Bidirectio...

Explain Bidirectional Glenn Shunt under cardiopulmonary Bypass ? The ascending aorta and SVC at innominate jugular vein junction and IVC are cannulated and child connected to c

What is angina pectoris, Q. What is Angina Pectoris? Chest discomfort i...

Q. What is Angina Pectoris? Chest discomfort is often reported by most patients especially those which are chronic cases of dyslipidemia and/or hypertension. Like diarrhoea and

What are some examples of interspecific competition, Q. What are some examp...

Q. What are some examples of interspecific competition? Instance of interspecific competition are the dispute among worms, vultures, flies and microorganisms for carrion and th

What is the main nitrogen waste of humans, Q. What is the main nitrogen was...

Q. What is the main nitrogen waste of humans? Human beings excrete largely urea eliminated with the urine.

Explain the types of double beam systems, Explain the types of double beam ...

Explain the types of double beam systems? Following are types of double beam systems: a) Dual beam in space type b) Dual beam in time type In type (a) separate detecto

Biological functions in which chlorine ions participate, Q. What are the ma...

Q. What are the major biological functions in which chlorine ions participate? Like sodium cations, chlorine anions actively participate in the regulation of the osmolarity of

Panting - temperature relations in animals, Normal 0 false fa...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Agro industrial-non-edible and other minor oilseed cakes, NON-EDIBLE AND OT...

NON-EDIBLE AND OTHER MINOR OILSEED CAKES Besides the annually cultivated oilseed crops namely, groundnut, sesame, mustard, linseed, coconut, cotton, sunflower and safflower, I

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