Define stress echocardiography with adenosine, Biology

Assignment Help:

Q. Define Stress Echocardiography with Adenosine?

These have all been described. The information is that of wall motion abnormality indicating ischaemia. Ejection fraction can also be measured. These techniques are somewhat less expensive than radionuclear studies, but require an experienced technician to obtain a satisfactory study. Pharmacological stress echocardiography is a form of non-exercise stress echocardiography. There are basically two approaches to performing pharmacologic stress with echocardiography.

Potent vasodilators, such as dipyridamole or adenosine produce ischaemia by a "steal phenomenon" whereby blood is shunted away from the obstructed arteries due to dilatation of the normal arteries, thereby producing ischaemia in the area perfused by the obstructed arteries. The alternative approach is to use an adrenergic stimulating drug to simulate exercise. Under these circumstances, ischaemia is produced by increasing the heart rate and blood pressure as with exercise. The most popular pharmacologic agent in this class is Dobutamine. This drug has a strong ionotropic and modest chronotropic effect on the heart.


Related Discussions:- Define stress echocardiography with adenosine

Phylum cnidaria (coelenterata ), PHYLUM  CNIDARIA (= COELENTERATA )       ...

PHYLUM  CNIDARIA (= COELENTERATA )         Definition and Introduction Tissue  grade eumetazoans with  a radial  symmetry .The  term  coelenterate  signifies the  presence

Explain thermal destruction of enzymes during sterilization, Explain about ...

Explain about Thermal Destruction of Enzymes during Sterilization? Before we move on to canning, we need to emphasize here that like thermal destruction of microorganisms, ther

What are the functional divisions of the nervous system, What are the funct...

What are the functional divisions of the nervous system? Functionally the nervous system can be separated into the somatic nervous system and visceral nervous system. The so

Show foods that damage gi mucosa, Q. Show Foods that damage GI mucosa? ...

Q. Show Foods that damage GI mucosa? Foods that damage GI mucosa: A number of spices, herbs and other condiments have been found to have little or no irritating effect on the m

Meaning of counselling in diabetes mellitus, Q. Meaning of Counselling in d...

Q. Meaning of Counselling in diabetes mellitus? The word counselling is a very broad term which is used for helping others to overcome their particular difficulty. It has been

How can you explain atp synthesis, Q. How in the respiratory chain do elect...

Q. How in the respiratory chain do electrons from NADH2 and FADH2 passing through cytochromes liberate energy for the ATP synthesis? What is this ATP synthesis called? NADH2and

Brucellosis, Br u c e ll osi s It is also called as Bang's diseas...

Br u c e ll osi s It is also called as Bang's disease or contagious abortion as it causes abortion in late pregnancy and infertility. E t iology: It is cause

Describe the structure of body wall of ascaris, Question 1 Write a short n...

Question 1 Write a short note on the following                           1 Class polychaeta

Water adaptations, Water Adaptations After becoming familiar with the t...

Water Adaptations After becoming familiar with the two kinds of water stresses you would like to know about the adaptations in plants and animals which enable them to survive u

Determine by nutritive muscular cell?, Determine by nutritive muscular cell...

Determine by nutritive muscular cell? The cells which form the gastrodermis lining the inner cavity of cnidarians. They carry out two functions: First is to absorb and digest 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