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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.
How can the blood coagulation (clotting) process be described? Blood clotting encompasses a sequence of chemical reactions whose respective products are enzymes that catalyze t
PHYSIOLOG Y OF DIGESTION Food - omnivorous. Digestion - Intercellular. (i) Mechanical - by chewing, deglutinationm, churnning, peristalais. Under control of medulla oblonge
Q. Causes of gastro oesophageal reflux disease? GERD may develop due to any of the following reasons: • decreased muscle tone or abnormal relaxation of the LES, • reduced st
Explain Water - An Essential but Overlooked Nutrient? You may already know that the total body water (TBW) constitutes 50-60% of the body weight. A 70 kg 'standard male' contai
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Define Features of male and female ascaris lumbricoides? i) Ascaris lumbricoides is commonly called round worm. ii) Body is elongated, cylindrical, tapering at bot
How are platelets formed? What is the function of platelets? What consequences does the clinical condition known as thrombocytopenia yield? Platelets, also called as thrombocyt
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