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US 8,428,720 B2Granted
Posture-induced changes to physiological parameters
AssigneeMedtronic, Inc.
InventorsGiorgio Corbucci, Brian B. Lee
Life of this patent
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Abstract
Methods and devices for analyzing posture-induced changes to physiological parameters of a patient (e.g., ejection time, heart rate, etc.) to provide an assessment of one or more conditions of the patient.
Claims22
An implantable medical device for use in assessment of one or more conditions of a patient comprising:
- sensing apparatus to monitor physiological parameters of the patient, wherein the physiological parameters comprise the patient's posture and ejection time, wherein the patient's ejection time comprises at least one of the patient's left ventricular ejection time and right ventricular ejection time;
- a sensing module coupled to the sensing apparatus and configured to receive the monitored physiological parameters;
- and
- a control module coupled to the sensing module and configured to:
- detect a change in the patient's posture between a lying position and an upright position using the monitored physiological parameters,
- determine a posture-induced change to the patient's ejection time using the monitored physiological parameters, wherein the posture-induced change to the patient's ejection time comprises a difference between the patient's ejection time before the detected change in the patient's posture and the patient's ejection time after the detected change in the patient's posture,
- store the posture-induced change to the patient's ejection time, and
- analyze the posture-induced change to the patient's ejection time to provide an assessment of one or more conditions of the patient, wherein the one or more conditions of the patient comprise fluid overload.
5 more elements
An implantable medical device for use in assessment of one or more conditions of a patient comprising:
- sensing apparatus to monitor physiological parameters of the patient, wherein the physiological parameters comprise the patient's posture and ejection time, wherein the patient's ejection time comprises at least one of the patient's left ventricular ejection time and right ventricular ejection time;
- a sensing module coupled to the sensing apparatus and configured to receive the monitored physiological parameters;
- and
- a control module coupled to the sensing module and configured to:
- detect changes in the patient's posture between a lying position and an upright position using the monitored physiological parameters,
- determine a plurality of posture-induced changes to the patient's ejection time over time using the monitored physiological parameters, wherein each of the plurality of posture-induced changes to the patient's ejection time comprise a difference between the patient's ejection time before a detected change in the patient's posture and the patient's ejection time after the detected change in the patient's posture,
- store each of the plurality posture-induced changes to the patient's ejection time, and
- analyze the plurality of posture-induced changes to the patient's ejection time over time to provide one or more trends to be used in an assessment of one or more conditions of the patient, wherein the one or more conditions of the patient comprises fluid overload.
5 more elements
A method for use in assessing one or more conditions of a patient comprising:
- monitoring physiological parameters of the patient, wherein the physiological parameters comprise the patient's posture and ejection time, wherein the patient's ejection time comprises at least one of the patient's left ventricular ejection time and right ventricular ejection time;
- detecting a change in the patient's posture between a lying position and an upright position using the monitored physiological parameters;
- determining a posture-induced change to the patient's ejection time using the monitored physiological parameters, wherein the posture-induced change to the patient's ejection time comprises a difference between the patient's ejection time before the detected change in the patient's posture and the patient's ejection time after the detected change in the patient's posture;
- storing the posture-induced change to the patient's ejection time;
- and
- analyzing the posture-induced change to the patient's ejection time to provide an assessment of one or more conditions of the patient, wherein the one or more conditions of the patient comprise fluid overload.
3 more elements
A method for use in assessment of one or more conditions of a patient comprising:
- monitoring physiological parameters of the patient, wherein the physiological parameters comprise the patient's posture and ejection time, wherein the patient's ejection time comprises at least one of the patient's left ventricular ejection time and right ventricular ejection time;
- detecting changes in the patient's posture between a lying position and an upright position using the monitored physiological parameters,
- determining a plurality of posture-induced changes to the patient's ejection time over time using the monitored physiological parameters, wherein each of the plurality of posture-induced changes to the patient's ejection time comprise a difference between the patient's ejection time before a detected change in the patient's posture and the patient's ejection time after the detected change in the patient's posture,
- storing each of the plurality posture-induced changes to the patient's ejection time, and
- analyzing one or more trends in the plurality of posture-induced changes to the patient's ejection time over time to provide an assessment of one or more conditions of the patient, wherein the one or more conditions of the patient comprises fluid overload.
2 more elements
Dependencies are inferred from the claim text.