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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.
Overheating the bone and exerting too much pressure Minimal temperature elevation during surgical drilling of the bone is a key factor in atraumatic surgical technique. Bone ce
Explain Potts Shunt in palliative operations ? This is a similar shunt done through a left thoracotomy. Anastomosis is done between left pulmonary artery aid descending thoraci
Alkaline Phosphatases use water as a second substrate. Why do we still treat their kinetics as if they were for a single-substrate reaction?
DESCRIBE ELECTRON TRANSPORT SYSTEM AND PHOTORESPIRATION
In an investigation to compare the rates at which starch is being broken down by an enzyme (a) what test is used (b) how do you know when the reaction
Define the Interaction of Vitamin C with iron? Ascorbic acid powerfully enhances absorption of non- haem iron and reverses the inhibiting effect of tea and calcium phosphate. I
Yeast is cultured in the presence of radioactive phosphate and the following biological molecules are purified. Which molecule should be most radioactive? A. An oligosaccharide B.
When the overlap between the thin and thick filaments of a sarcomere in a skeletal muscle is decreasing, the A. total length of the I band minus the length of the H zone is dec
what is the effect of KClO4 on the kidneys in the nephrotic system?
What are the differences b/w bone and cartiledge
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