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

Identical karyotypes and identical genomes, Q. Can two normal individuals o...

Q. Can two normal individuals of the same species with sexual reproduction have identical karyotypes and identical genomes? And how is the human karyotype usually represented?

Problem of polarity in regeneration in planarians, Problem of Polarity in R...

Problem of Polarity in Regeneration in Planarians As in Hydra, flatworm regeneration as well appears to occur in a polar fashion. There seems to be ananterior-posterior gradie

Risk analysis - animal studies, Animal studies Most toxicological data ...

Animal studies Most toxicological data for risk assessment are derived from the animal studies and  it  is, therefore, essential that these studies be conducted following widel

Effect of alcohol on human body, EFFECT OF ALCOHOL - 1 .       EFFECT...

EFFECT OF ALCOHOL - 1 .       EFFECT ON NERVOUS SYSTEM - Alcohol has an anesthetic effect on nervous system. It affects orientation, alertness, coordination, judgement

Family is the basic unit of society - child care, Family  is the Basic Uni...

Family  is the Basic Unit of Society   Each child within a family needs love and security to develop feelings of  trust and self esteem. Each child is a unique individual who h

Ethylene - apical dominance, Ethylene - Apical Dominance Ethylene also...

Ethylene - Apical Dominance Ethylene also plays a role in the inhibition of lateral bud growth. It is present in those tissues like shoot apex where auxins are also present. I

Homo erectus, Homo erectus first arose about 1.6 million years ago and is b...

Homo erectus first arose about 1.6 million years ago and is believed to have lived for atleast 600,000 years at a time when the transition to Homo sapiens took place. The fosSil fi

BiologicaL METHODS.., GIVE THE SHORT DETAIL OF HE BIOLOGICAL METHODS

GIVE THE SHORT DETAIL OF HE BIOLOGICAL METHODS

Importance of primary prevention of diabetes mellitus, Q. Importance of Pri...

Q. Importance of Primary prevention of diabetes mellitus ? Primary prevention has been found to be cost effective in the long run as it reduces unwarranted human suffering. Pre

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