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

Determine the solubility of micronutrient cations, Determine the solubility...

Determine the solubility of micronutrient cations The solubility of micronutrient cations is at a maximum at low pH values. As the pH increases the ions of these elements first

What is cellulose, What is cellulose? Cellulose is a long-chain polymer...

What is cellulose? Cellulose is a long-chain polymeric polysaccharide carbohydrate, of beta-glucose. It creates the primary structural component of green plants. The primary ce

Gametogenesis, The process of meiosis in animals is called gametogenesis .I...

The process of meiosis in animals is called gametogenesis .It takes place in the testis in male and ovary in female. Gametogenesis is divided into spermatogenesis (formation of

Management of ventricular septal defect, Management   In case of  small...

Management   In case of  small defects surgical treatment is not indicated because spontaneous closure may occur before one to two years of  age. Patient  is treated for conges

Excretion, State the excretory organelles of various organisms

State the excretory organelles of various organisms

Name the alpha-islet cells of the pancreas, Person X is a healthy human who...

Person X is a healthy human who has volunteered to take experimental drug Y.  Person X has a normal dinner at 6 PM on April 1 and then does not eat for 12 hours.  At 5 PM on A

Ecology, What is the concept of minimum and maximum way of tolerance

What is the concept of minimum and maximum way of tolerance

Describe the theory of capillarity of water, a) Describe the theory of capi...

a) Describe the theory of capillarity of water translocation in plants. b) Can the theory define translocation of water in 100 m tall trees? Give one reason.

Compare and contrast covalent and ionic bonds, Compare and contrast covalen...

Compare and contrast covalent and ionic bonds in molecules, give an example of each.

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

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