摘要:
A method and apparatus are disclosed for treating mitral or tricuspid regurgitation with electrical stimulation. By providing pacing stimulation to a selected region of the left ventricle, such as one in proximity to the mitral valve apparatus or papillary muscles in a manner that pre-excites the region during early ventricular systole, a beneficial effect is obtained which can prevent or reduce the extent of mitral regurgitation.
摘要:
A method for treating patients after a myocardial infarction which includes pacing therapy is disclosed. A cardiac rhythm management device is configured to deliver pre-excitation pacing to one or more sites in proximity to an infarcted region of the ventricular myocardium. Such pacing acts to minimize the remodeling process to which the heart is especially vulnerable immediately after a myocardial infarction.
摘要:
A cardiac rhythm management device is configured to detect oscillations in cardiac rhythm by comparing electrogram signals during successive heart beats. Upon detection of electrical alternans, the device may adjust its operating behavior to compensate for the deleterious effects of the condition.
摘要:
A method and apparatus are disclosed for treating mitral or tricuspid regurgitation with electrical stimulation. By providing pacing stimulation to a selected region of the left ventricle, such as one in proximity to the mitral valve apparatus in a manner which pre-excites the region during early ventricular systole, a beneficial effect is obtained which can prevent or reduce the extent of mitral regurgitation.
摘要:
A cardiac rhythm management device is configured to detect oscillations in cardiac rhythm by comparing electrogram signals during successive heart beats. Upon detection of electrical alternans, the device may adjust its operating behavior to compensate for the deleterious effects of the condition.
摘要:
A system for providing temporary therapy, such as cardiac resynchronization therapy, to a patient suffering a decompensation event. The system can include a device having an external module for generating electrical stimuli, a first lead coupled to the module and implanted into an atrial region of a patient's heart, and a second lead coupled to the module and implanted into a ventricular region of the patient's heart. The device can also include a storage module coupled to the external module to store data associated with physiological data measured by the device. The external module is configured to temporarily generate electrical stimuli that are delivered by at least one of the first and second leads to provide therapy cardiac resynchronization therapy to the heart. A network can be coupled to the device to allow data stored in the device to be downloaded through the network to a central repository.
摘要:
A method and apparatus for linear stimulation of the heart to resynchronize contraction for improved hemodynamic benefit. Linear stimulation may be accomplished using a linear source, which may comprise an elongated electrode or plurality of electrodes arranged so as to linearly stimulate the heart. A linear source may be coupled to the left ventricle, and one or more additional electrodes may be positioned so as to stimulate a separate region of the left ventricle or one or more additional chambers of the heart as well. Application of an electrical stimulus by the linear source may function to stimulate a larger region of the heart, thereby enhancing the resynchronization effect as well as providing other hemodynamic benefits.
摘要:
A method of treating a cardiomyopathy in a subject includes administering directly to or expressing locally in a weakened, ischemic, and/or peri-infarct region of myocardial tissue of the subject an amount of SDF-1 effective to cause functional improvement in at least one of the following parameters: left ventricular volume, left ventricular area, left ventricular dimension, cardiac function, 6-minute walk test, or New York Heart Association (NYHA) functional classification.
摘要:
A drug delivery system detects a cardiac condition indicative of a need for increasing a cardiac metabolic level and, in response, releases a drug into tissue or blood to shift a source of metabolically synthesized energy fueling cardiac contraction from fatty acid to glucose. One example of such a system includes an implantable device detecting an ischemia and a transdermal drug delivery device delivering a drug when an ischemic condition is detected. Another example of such a system includes one or more implantable devices detecting a predefined change in cardiac metabolic level and delivering a drug when the change is detected. Such systems are applied to treat, for example, patients suffering ischemia and/or heart failure and patients having suffered myocardial infarction.
摘要:
Various system embodiments comprise a neural stimulator, a pulse generator, and a controller. The neural stimulator is adapted to generate a neural stimulation signal. The pulse generator is adapted to generate a pacing signal to provide myocardium pacing. The controller is adapted to control the neural stimulator and the pulse generator to provide a cardioprotective conditioning therapy. The conditioning therapy includes neural stimulation to elicit a parasympathetic response and myocardium pacing. Other aspects and embodiments are provided herein.