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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.
Bac t e r i a l diseases C o lisepticemia Colisepticemia, also known as colibacillosis caused by Escherichia coli, is the commonest disease condition in ill-mana
State in brief about the nuclear DNA The nuclear DNA is distributed between two or more chromosomes, the number of which varies among different eukaryotes, and is characterist
living organisms and their excretory products
phylum porifera
Q Concerning germ layers and the presence of coelom how are arthropods characterized? Arthropods are triploblastic and coelomate beings (they have three germ layers). Q. Co
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Define Precautions for Acid Fast Staining? 1. Do not allow carbol fuchsin to dry on heating. 2. Maintain aseptic conditions. 3. Decolourization should be done till no red
Q. What is Ocean shorelines? Ocean shorelines include rocky coasts and sandy beaches that are particularly rich in diverse life forms. Rocky shorelines support a diversity of o
Which of the following best defines why the two DNA polymerase proteins that are held by the sliding clamp are oriented in opposite directions? A. The efficiency of replication
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