Explain fossn ovalis defect ostium secundum defect, Biology

Assignment Help:

Explain Fossn Ovalis Defect (Ostium Secundum Defect) ?

This is the most common type of atrial septal defect.
The usual approach is through a midline incision and median sternotomy. In young girls, for cosmetic reason, approach through a submammary light thoracotorny or low and minimally invasive midline incision is used. Piece or pericardium is harvested for patch closure of the defect. Ascending aortic and bicaval cannulations are done for cardio pulmonary bypass. The operation is done at 32 to 34°C after aorta is clamped aortic root cardioplegia given.

After snaring SVC and IVC tapes, right atrium is opened parallel to atrioventricular groove. Anatomy of the defect is studied and mitral valve is inspected and tested for incompetence. When the defect is fenestrated, these strands are excised to form a single large defect. Small defects can be directly closed but a patch closure is generally preferred. The pericardial patch is first sutured to the inferior aspect of the defect between inferior vcna cava and left atrium. Great care is taken not to confuse the Eustachian valvc of' IVC with remnant qf the floor of fossa ovalis. Such an error can lead to diversion of IVC to left atrium when the operation is done under circulatory arrest without an IVC cannula. Once the lower part of the patch is anchored, the rest of the patch is sutured to the margins of the defect. Care is taken to avoid injury to the atrio ventricular node situated at the apex of the Koch's triangle.


Related Discussions:- Explain fossn ovalis defect ostium secundum defect

Determine the testing for albumin in urine, Determine the Testing for Album...

Determine the Testing for Albumin in Urine Acetic Acid Test About 2 - 8 mgm/dl of protein is excreted in urine which is not usually detected by routine test. The testing o

What is the mn blood system, What is the MN blood system? What is the patte...

What is the MN blood system? What is the pattern of genetic inheritance of the MN blood system? A MN blood system is a third (in addition to the ABO and the Rh) system of blood

What is natural selection, What is natural selection? Natural selection...

What is natural selection? Natural selection is the method by which organisms that have certain favorable traits are better capable to survive and make successfully than organi

Which are the phases of the menstrual cycle, Q. Which are the phases of the...

Q. Which are the phases of the menstrual cycle? The menstrual cycle is divided into two major phases: the luteal (or secretory) phase and the follicular (or menstrual) phase.

Location of overgloves, Location of Overgloves - taped to the sides of ...

Location of Overgloves - taped to the sides of the mobile cabinets for procedures such as patient examination and charting during non-aerosol producing procedures - on the p

Tumours of kidney - wilm''s tomour, Tumours of kidney - Wilm's Tomour ...

Tumours of kidney - Wilm's Tomour So  far you have learnt about the disorders in glomerular dysfunctioning, now you will learn about the tumours in kidney the wilm's  tumour.

Determine the prosthetic planning, Determine the prosthetic planning Co...

Determine the prosthetic planning Complete prosthetic planning has to be done and the implants planned accordingly. Thereafter the surgical phase should be carried out. Once th

Describe the classification of life in diversity of life, Describe the Clas...

Describe the Classification of Life in diversity of life? There are at least 10 million different kinds of living organisms inhabiting Earth. Many different organisms have comm

Determine the prevention of cholera, Determine the prevention of Cholera ...

Determine the prevention of Cholera Prevention:  Following recommendations are  there to prevent cholera  outbreak: Drink only water that you have boiled or treated with

What are the main prophylactic measures against malaria, Q. What are the ma...

Q. What are the main prophylactic measures against malaria? The major preventive measures against malaria are the elimination of the treatment of infected people, vector mosqui

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