Cardiac resynchronization therapy, Biology

Assignment Help:

This innovative, pacemaker-based approach to the treatment of patients with heart failure who have a wide QRS complex (>140 ms) on 12-lead ECG aims at providing electromechanical coordination and improved ventricular synchrony in symptomatic patients who have severe systolic dysfunction and clinically significant intraventricular conduction defects, particularly left bundle-branch block. A percutaneous, three-lead, biventricular pacemaker system is used; one lead is placed in the right atrium, one is placed in the right ventricle, and a third is passed through the right atrium, through the coronary sinus, and into a cardiac vein on the lateral wall of the left ventricle. 

Beneficial effects include reverse remodeling, resulting in decreased heart size and ventricular volumes, improved ejection fraction, and decreased mitral regurgitation. Clinical improvements in exercise tolerance, quality of life, and the rate of hospitalization have been documented. However resynchronization therapy has not been shown to enhance survival.


Related Discussions:- Cardiac resynchronization therapy

Explain about rheology of foods, Q. Explain about Rheology of Foods? Rh...

Q. Explain about Rheology of Foods? Rheology is the study of stress and strain or in other words, it is the study of flow and deformation of materials, both liquids and solids,

Explain the sarcomere, For a sarcomere of a skeletal muscle, define the fol...

For a sarcomere of a skeletal muscle, define the following terms: A is the length of the A Band; H is the length of the H Zone; I is the total length of the I Bands in the sarcomer

Which are the organs of the excretory system, Q. Which are the organs of th...

Q. Which are the organs of the excretory system? The excretory system is formed of ureters (two), kidneys (two), bladder and urethra.

Explain the treats bacterial infections, Is a viral infection treated with ...

Is a viral infection treated with the same kind of drug that treats bacterial infections? Antibacterial drugs, potent against a great variety of bacteria, are not effective aga

Determine the subordinate distinctions horizons, Subordinate Distinctions ...

Subordinate Distinctions In addition to the above mentioned designations, master horizons are further characterised by specific properties such as distinctive colour or the ac

Examine the differences between dna and rna, Examine the differences betwee...

Examine the differences between DNA and RNA. Explain why DNA is the most favorable molecule for genetic material and how RNA compares to it in this respect.

Illustrate in detail about the cell theory, Illustrate in detail about the ...

Illustrate in detail about the Cell theory All living organisms are composed of cells, and they are the basic structural and functional units of life, just like the atom is a

Action of antibodies against virus and against bacteria, Q. How different a...

Q. How different are the actions of antibodies against virus and against bacteria? Why is the cellular immune response activated in case of chronic viral infection? The antibod

What causes acid precipitation, What causes acid precipitation? Acid pr...

What causes acid precipitation? Acid precipitation is the result of air pollutants that combine with water vapor in the atmosphereto form acids, causing precipitation that is m

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