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

Simple precautions to prevent injuries, When resheathing needles, simple pr...

When resheathing needles, simple precautions to prevent injuries are to: 1. use only one hand to scoop the cap 2. hold the sheath with a hemostat (suggested but will require

Setting priorities for action - functions of consciousness, Setting priori...

Setting priorities for action: It is not enough for our actions to be coordinated with events in the outside world; they must reflect our internal needs. Pain can flood conscious

Threatened species - wildlife, Threatened Species - Wildlife Many plan...

Threatened Species - Wildlife Many plant and animal species are threatened by the possibility of extinction. However, the seriousness of the threat varies. For example, a spec

Back cross, BACK CROSS When F 1  individual (Tt) is crossed with one of...

BACK CROSS When F 1  individual (Tt) is crossed with one of the two parents, either tall (TT) or dwarf (tt), such a cross is called the back cross. There are two possibilities

What are x-linked traits, What are X-linked traits? The X-linked traits...

What are X-linked traits? The X-linked traits are the phenotypical traits conditioned by genes located in the nonhomologous (heterologous) portions of the X chromosome.

Explain the sex composition of the population, Explain the Sex Composition ...

Explain the Sex Composition of the Population? Sex composition of human population is one of the basic demographic characteristics, which is extremely vital for any meaningful

Define amino acids in the building blocks of proteins, Define Amino Acids i...

Define Amino Acids in the Building Blocks of Proteins? Amino acids, as you have already illustrated, have a carboxyl group and an amino group bonded to a common carbon atom and

Inorganic nitrogen and sulphur metabolism, Inorganic Nitrogen and Sulphur M...

Inorganic Nitrogen and Sulphur Metabolism Productivity in agriculture, forestry and other ecosystems is basically limited by the availability of nitrogen nutrients like nitrat

Explain the ecological niche modelling, Explain the Ecological niche modell...

Explain the Ecological niche modelling? The geographic range of organisms frequently reflects their fundamental niche, the range of physical conditions where they can live. Qua

Modification of mitosis, MODIFICATION OF MITOSIS 1 .      CRYPTOMITOS...

MODIFICATION OF MITOSIS 1 .      CRYPTOMITOSIS OR PROMITOSIS : Primitive type of mitosis. In this mitosis nuclear membrane not disappear (remain intact throughout the div

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