摘要:
Embodiments of the invention are related to methods and devices for respiratory or cardiac disease detection, monitoring, and/or management. In an embodiment, the invention includes a method of calculating a pulmonary function parameter of a subject. The method can include obtaining a first signal indicative of lung volume change during breathing from a first sensor, obtaining a second signal indicative of distending pressure from a second sensor, and calculating the pulmonary function parameter based on the first signal and the second signal. In an embodiment, the invention includes a method of monitoring pulmonary or cardiac disease status. In an embodiment, the invention includes an implantable medical device. The implantable medical device can include a first sensor configured to produce a first signal indicative of lung volume change during breathing, a second sensor configured to produce a second signal indicative of intrapleural pressure, and a processor configured to calculate lung compliance or pulmonary resistance based on the first signal and the second signal. Other aspects and embodiments are provided herein.
摘要:
A system and method for treating and/or preventing is described for treating periodic breathing characterized by cyclical hyperventilation and hypoventilation, examples of which include Cheyne-Stokes respiration and central sleep apnea. The system could also be used in the treatment of other conditions involving an impairment of respiratory drive.
摘要:
A system and method for treating and/or preventing is described for treating periodic breathing characterized by cyclical hyperventilation and hypoventilation, examples of which include Cheyne-Stokes respiration and central sleep apnea. The system could also be used in the treatment of other conditions involving an impairment of respiratory drive.
摘要:
An evaluation of heart failure status is provided based on a disordered breathing index. Patient respiration is sensed and a respiration signal is generated. Disordered breathing episodes are detected based on the respiration signal. A disordered breathing index is determined based on the disordered breathing episodes. The disordered breathing index is trended and used to evaluate heart failure status. The disordered breathing index may be combined with additional information and/or may take into account patient activity, posture, sleep stage, or other patient information.
摘要:
An apparatus comprises a physiologic sensing circuit and a control circuit. The physiologic sensing circuit is configured to sense an electrical respiration signal representative of respiration of a subject. The control circuit includes a respiration monitor circuit and a therapy circuit. The respiration monitor circuit is configured to extract a respiration parameter from the respiration signal and detect that a value of the respiration parameter is outside of a target value range for the respiration parameter. The therapy circuit is configured to deliver neural stimulation to the carotid sinus of the subject to stimulate respiration and to adjust respiration to maintain the value of the respiration parameter within the target value range.
摘要:
An inspiratory muscle stimulation system uses an implantable medical device to deliver stimulation to control diaphragmatic contractions for slower and deeper breathing, thereby conditioning and strengthening inspiratory muscles. In various embodiments, respiratory and/or cardiac performance are monitored for controlling parameters of the stimulation.
摘要:
An inspiratory muscle stimulation system uses an implantable medical device to deliver stimulation to control diaphragmatic contractions for slower and deeper breathing, thereby conditioning and strengthening inspiratory muscles. In various embodiments, respiratory and/or cardiac performance are monitored for controlling parameters of the stimulation.
摘要:
A system and method for determining pulmonary performance from transthoracic impedance measures is provided. Transthoracic impedance measures collected by an implantable medical device are correlated to pulmonary functional measures. The pulmonary functional measures are grouped by respiratory pattern. Pulmonary performance is evaluated. Differences are determined by comparing the pulmonary functional measures for each respiratory pattern to the pulmonary functional measures for at least one previous respiratory pattern. A trend is identified from the differences. An alert is generated upon sufficient deviation of the trend from a threshold criteria.
摘要:
Methods and systems involve adjusting cardiac pacing based on information acquired via a respiratory therapy device. A medical system includes a respiratory therapy device having one or more sensors and a therapy delivery unit. The one or more sensors are configured to sense respiration cycles. The therapy delivery unit is configured to deliver an external respiratory therapy to the patient. The medical system also includes a pulse generator configured to deliver cardiac pacing pulses to the patient. A controller is coupled to the one or more sensors and the pulse generator. The control unit configured to adjust a cardiac pacing rate based on the patient's respiration cycles.
摘要:
An approach to providing disordered breathing therapy includes detecting disordered breathing and adapting a therapy to mitigate the disordered breathing. The therapy may be adapted to enhance therapy effectiveness, to provide therapy that reduces an impact of the therapy on the patient, or to achieve other therapeutic goals. Cardiac electrical therapy to mitigate the disordered breathing may include various cardiac pacing regimens and/or delivery of non-excitatory electrical stimulation to the heart.