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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.
Feline calcivirus infection This disease is caused by a virus under the family Caliciviridae. Its symptoms include rhinitis, tracheitis and pneumonia. The animals are lethargi
Define Obligatory Nitrogen losses? The Committee estimated the total obligatory nitrogen losses through faeces, urine, skin and other miscellaneous routes in adult men as 2.0 m
Anticoagulant therapy To prevent blood clotting on the valve, patients with prosthetic valves require life long anticoagulant therapy. The patient is put on oral antico
S a f e ty, ethical and welfare considerations Development of transgenic organisms is proceeding in an environment of intense public debate about safety, environmental impa
1. DNA must be extensively folded in order to fit inside a nucleus that is less than 10 um in diameter. a. Describe how DNA is folded into chromatin structures of increasing com
LEN S - In lumen of eye ball, a large colourless, transparent, more convex on back side, lens present covered by lens capsule. When white tissues are formed in it, it b
Intermittent Treatment Intermittent 4-drug regimens with 2 or 3 doses per week after at least 2 weeks of daily therapy are also effective for treatment of TB and should alway
Q. What is the part of the female reproductive system where fecundation occurs? Fecundation in general occurs in the Fallopian tubes but it can also take place within the uteru
Spermiogenesis - Spermatogenesis At the end of the meiosis the spermatids appear as simple spherical cells with a centrally located nucleus. Their differentiation into sperm r
Respiratory Organs These are the organs regarded with the gaseous exchange, i.e., intake .of oxygen and output of carbon dioxide. They have generally greater rate of gas exch
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