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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.
In what ways is water lost from the body? Water is lost from the body by a) Evaporation (lungs and skin), b) Urination and defaecation (faeces always have water).
Define B-Complex Vitamins required for elderly? B-Complex Vitamins: Various B complex vitamins especially B folic acid, B 6 , and riboflavin are found to affect favourably t
classification sketch of protozoa
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Q. What is the name of the terminal portion of the axon? The terminal portion of the axon is called as presynaptic membrane Through, this membrane neurotransmitters are release
What is the difference between chromosomes and chromatin?
Is transportation of gases in tracheophytes made through the vascular tissues? Carbon dioxide and oxygen are not transported by the xylem or phloem. These gases reach the cells
How is the concept of chromosome related to the concept of the gene? A chromosome is a DNA molecule and chromosome may contain several different genes and as well DNA portions
What is Sporocyst? Specify. A stage in the life cycle of trematode flukes. Sporocyst develops from the mericidium found in intermediate host. Every sporocyst contains the germ
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