Explain the techniques of operation in post myocardial, Biology

Assignment Help:

Explain the Techniques of Operation used in post myocardial infarction ventricular septal defect?

Techniques of Operation :  If the patient's condition is stable cardiac catheterisation, coronary angiography and left ventriculography are done. Otherwise patients are taken up based on echo and doppler studies. Pre-operative intra aortic balloon pump (IABP) and pulmonary arterial pressure monitoring (Swan-Ganz catheter) will be of great help. Operation can be safely postponed if there is:

1) Adequate cardiac output with no evidence of cardiogenic shock.

2) Absence of pulmonary oedema and pulmonary venous hypertension.

3) Absence of fluid retention on treatment with diuretics and digitalis.

4) Good renal function.

Patient should be under close observation during this period and urgent operation undertaken if there is deterioration. Haemodynamically compromised patients are taken up for surgery with a Swan

Ganz pulmonary arterial catheter in situ and on intra aortic balloon pumps (IABP). At times the surgeon may have to put the patient on cardiopulmonaty bypass under local anaesthesia using femoral arterial and venous cannulae before' anaesthesia. This helps to overcome haemodynamic collapse at the time of induction of anaesthesia.

Initial steps of the operation are the same as described for coronary artery bypass grafting. Saphenous vein is harvested during median stelnotomy and preparation for cardiopulmonaty bypass. Ascending aorta and superior and inferior vena cavae are cannulated and snares passed around both vena cavae preparatory to total cardio pulmonary bypass. Antegrade and retrograde cardioplegia through aortic root and coronary sinus are given for good myocardial protection.


Related Discussions:- Explain the techniques of operation in post myocardial

Endocrine glands - liver, LIVE R - The liver produces a protein angiot...

LIVE R - The liver produces a protein angiotensinogen which is changed to angiotensin II by an enzyme renin secreted by the juxtaglomemlar apparatus of the nephrons in the kid

How to recover from blood pressure, Q. How to Recover from Blood Pressure? ...

Q. How to Recover from Blood Pressure? The rate of the systolic blood pressure drop during recovery is usually fairly rapid after maximum exercise, although a rebound with a te

Explain basal metabolism rate (bmr) - ageing, Explain Basal Metabolism Rate...

Explain Basal Metabolism Rate (BMR) - Ageing? From age 25 years, the basal metabolism decreases by about 2 percent for each decade due to the increasing proportion of body fat

Renin-angiotensin system, As heart failure sets in, there is activation of ...

As heart failure sets in, there is activation of RAS (Fig 2.1). Adrenergic stimulation of beta-1 receptors in juxtaglomerular apparatus of the kidneys results in release of renin.

Neurochemistry of consciousness, Conscious experience is probably the most ...

Conscious experience is probably the most familiar mental process that we know, yet its workings remain mysterious. Consciousness is not directly accessible for study. Hence the ne

Exchange transfusion, Exchange transfusion An exchange transfusion is ...

Exchange transfusion An exchange transfusion is the serial withdrawal and injection of small amounts of blood through a central vein-usually umbilical until the required volu

Define etiology - anorexia nervosa, Define Etiology - Anorexia Nervosa? ...

Define Etiology - Anorexia Nervosa? The exact cause of eating disorders is not known. It is multi factorial in origin in which the personality of the patient, family relationsh

What are synthetic auxins, What are synthetic auxins and what are their use...

What are synthetic auxins and what are their uses? Synthetic auxins, like indolebutyric acid (IBA) and naphthalenic acid (NAA) are substances same to IAA (a natural auxin) but

Describe the genetic material of a virus, Q What is the genetic material of...

Q What is the genetic material of a virus? How does that material act in viral reproduction? There is DNA viruses double strand or single strand DNA and RNA viruses double stra

Adverse effects of air pollution, Air pollution affects both living and non...

Air pollution affects both living and non-living matter. The effects can be classified as.

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