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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.
Explain the Development of SIRS or MODS? Multiple hypothesis have been proposed to explain the development of SIRS or MODS. The progression of SIRS to MODS appears to be mediat
Staphylococci exist in air, dust, sewage, water, milk and food or on food equipment, environmental surfaces, humans and animals. Humans and animals are the primary reservoirs. Stap
What are niches and competitive exclusion?
Consider cell with a diploid chromosome number of 4 (2n=4), one pair of the chromosomes is metacentric,the other is acrocentric. The metacentric is labeled a 1 a 1 while the acr
ACCESSORY GLANDS - 1 . PROSTATE GLAND - One in number, 4-5 lobed, it forms 15-30% of semen.Citric acid, lipid, acid phosphatase spermin, fibrinolysine are present.
SPLEEN Largest lymph gland, also with myeloid tissue is an important specialized reticuloendothelial organ in vertebrates, as the site of erythropoiesis. Splenic tissue i
Whenever a pair of alleles has different alleles is there dominance between them? Not in all cases of a gene having two different alleles is the dominance complete. There are g
Explain the The system of the nomenclature The system of the nomenclature and the classification of enzymes is based exclusively on the reaction that is catalyzed and does not
Syngamy and Triple Fusion After traversing through the stylar region, the ultimate destination of the pollen tube is to reach the female gametophyte and release the male game
Q. Indicating the name and respective ploidy of each involved cell how can the formation of sperm cells from germ cells be described? The formation of spermatogenesis or sperm
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