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

Why does thermal inversion increases air pollution, Why does thermal invers...

Why does thermal inversion increases air pollution? What harm can thermal inversion cause to humans? Thermal inversion confines at low altitude a layer of pollutants that would

Cytokinins - apical dominance, Cytokinins - Apical Dominance Cytokinin...

Cytokinins - Apical Dominance Cytokinins are also involved in the regulation of apical dominance. Wickson and Thimann studied the interaction of cytokinins and auxins in contr

Consider a ph scale while answering, What is the relationship of hydrogen i...

What is the relationship of hydrogen ion concentration in tomato juice relative to lemon juice and to pure water? Be as quantitative as you can (i.e., use numbers to describe the m

Complications in gastric ulcers, Q. Complications in Gastric ulcers? Pe...

Q. Complications in Gastric ulcers? Peptic ulcers if not managed properly can result in serious consequences which can even be life threatening. The complications involved in

Determine the enzymes utilization in baking industry, Enzymes utilization i...

Enzymes utilization in Baking Industry In the baking of bread, the preliminary process involves the mixing of wheat flour (mainly starch and proteins) with yeast and water. Sta

Describe about mixed type of ta pvc, Describe about Mixed Type of TA PVC ? ...

Describe about Mixed Type of TA PVC ? Management depends upon the type of TAPVC and could be very challenging. However the basic principle is to get all the pulmonary veins to

Explain the importance of nicotinic acid, Explain the Importance of nicotin...

Explain the Importance of nicotinic acid Nicotinic acid is successfully used in the therapy of a number of vascular disorders such as vascular spasms, angina pectoris, arthriti

Define regulation of water balance - for digestive process, Define Regulati...

Define Regulation of Water Balance - For the Digestive Process? For the digestive process alone, the estimated daily volume of fluid that enters and leaves the gastrointestinal

Explain adverse effects of oseltamivir, Explain Adverse Effects of Oseltami...

Explain Adverse Effects of Oseltamivir  Nausea and vomiting can occur. Taking the drug with food decreases the incidence of nausea. In juvenile rats, very high doses of osel

What is lipoproteins, A lipoprotein is a biochemical assembly which haves b...

A lipoprotein is a biochemical assembly which haves both lipids and proteins, bound to the proteins that allow fats to move by the water outside and inside cells. The proteins serv

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