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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.
function of topoisomerace?
How many alleles of genes that condition X-linked traits do female and male individuals respectively present? For every correspondent gene to an X- linked trait women present a
Quaternary Structure (4 o Structure). Globular in structure. When two or more than two molecules of protein of tertiary structure are connected to each other through
Define Requirements of Vitamins and Minerals during Surgery? Normal tissue stores of vitamins are required for the metabolism of carbohydrates and protein. Deficiency states li
Comparison between Metamorphosis in Amphibians and Insects You may have realized that the metamorphic process in amphibians and insects show certain fundamental similarity. M
Cultured plant cells: Cultured plant cells are recognized to give biochemicals of interest since 1950's , but starting the yields were very low. Refined culture structures hav
PLASM A - It is slightly alkaline non-living intercellular substance which constitutes about 60% part of the blood. It is a pale yellow but transparent and clear fluid.
Describe about the extra-ocular muscles The eye is comprised of extra-ocular and intra-ocular muscles. The extra-ocular muscles are comprised of 4 recti and 2 obliques. The rec
Acetylcholine, a well known neurotransmitter, plays a critical synaptic role in the initial formation of memory. Chemical blockage of the acetylcholine receptors makes it harder to
Which of the following best describes the tenants of Pangenesis Theory? A. The hereditary material is composed in every organ/tissue and is transmitted to the next generation b
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