Describe shunts, Biology

Assignment Help:

Q. Describe Shunts?

Detection, localization and quantification of intracardiac shunts are one of the most important exercises in cardiac catheterization. In most cases a preliminary clinical evaluation will give us knowledge of the possible intracardiac shunt.

The pointers to the presence of a shunt are:

1) Unexplained arterial desaturation (arterial saturation < 95 per cent) suggestive of a right to left shunt and representing alveolar hypoventilation.

2) Unexpectedly high pulmonary artery saturation > 80 per cent-suggestive of a left to right shunt.

3) When data at catheterization does not confirm a particular lesion.

Detection of left to right intracardiac shunts-Measurement of blood oxygen saturation and content in the right heart (oximetry run) Oximetry run is a basic technique for detecting and quantifying intracardiac shunts.

The oxygen content or per cent saturation is measured in blood samples drawn sequentially from PA, RV, RA, SVC and IVC. A significant step-up is defined as an increase in the blood oxygen content or saturation that exceeds the normal variability that might be observed if multiple samples were drawn from that cardiac chamber. Oxygen content can be calculated from the knowledge of percentage saturation, the patient's hemoglobin concentration and an assumed constant relationship for oxygen carrying capacity of hemoglobin (1.36mL O2/g hemoglobin).


Related Discussions:- Describe shunts

Define the marasmic kwashiorkor, Define the Marasmic Kwashiorkor? In co...

Define the Marasmic Kwashiorkor? In countries where the incidence of protein-calorie malnutrition (PCM) is high, a large number of cases show signs and symptoms of marasmus and

Digestive system, I want to know how does our digestive system work

I want to know how does our digestive system work

What are the major organic molecules for living beings, Q. What are the maj...

Q. What are the major significant organic molecules for living beings? There are many types of organic molecules that are important for the living beings. Particularly importan

Pathology, Pathology: This concerned with the identification of different d...

Pathology: This concerned with the identification of different diseases, causative organs, their prevention and control methods. Pathology is a kind of study or diagnosis of diseas

Pathophysiology and assessment of haemophilia, Pathophysiology   The bl...

Pathophysiology   The blood clotting mechanism occurs in three phases each dependent on preceding I phase. Due to the inherited deficiency of  factor VIII and or factor IX, the

Explain centrifuge - microbiological apparatus and equipment, Explain the C...

Explain the Centrifuge - Microbiological Apparatus and Equipments? Centrifuge is used for separating the substance in liquid or concentrating the microorganisms on the basis of

Define the types of canned foods, Define the Types of Canned Foods? 1....

Define the Types of Canned Foods? 1. Some foods form convection currents when being heated inside a can and so are heated faster since self-mixing - as foods become more visco

Corpus luteum in human females.., what is the fate of corpus luteum if egg...

what is the fate of corpus luteum if egg gets fertilised ?

Describe the important factors of hand washing, Describe the important fact...

Describe the important factors of Hand washing Hand washing is an important practice to follow before doing any procedure for the patient. The infection can be transferred

Define fermented dairy products-curd and yogurt, Normal 0 false...

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

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