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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.
what is phylum
Metamerism oe Segmentation In the early coelomates the coelom was not divided into segments, the whole body cavity was a single space. Hence body movements were not precise.
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According to the theory of natural selection, what factor below contributed to the current variations in beak sizes of finch species on the Galapagos Islands? a. Finches dispersed
Define Ion exchange chromatography? In this method a reversible exchange of ions is effected. Usually resins and ionic solutes are the two components involved in ion-exchange.
Introduction: There are different technologies available for dealing with waste water management and excreta. Some are suitable for dealing off-site sanitation and other can b
FAC E - It lies under the anterior part of cranium. It is composed of 14 bones. These includes 2 nasals, 2 maxillae, 2 palatine, 2 zygomatic, 2 lacrymals, 2 inferior
Citric Acid Cycle The citric acid cycle, also known as tricarboxylic acid (TCA) cycle, lies at the heart of aerobic metabolism. it is involved in the breakdown of all three maj
What is a centimorgan? The Centimorgan, or The recombination unit, by convention is a distance between two linked genes that corresponds to 1% of recombination frequency of the
Given our knowledge so far we now need to evaluate if it is feasible to run the process in the designed vessel. We therefore need to compare the oxygen uptake rate and the oxygen t
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