Identification of posture-related syncope using head-mounted sensors
First Claim
1. A system configured to identify orthostatic hypotension, comprising:
- a head-mounted device configured to measure photoplethysmographic signal (PPG signal) at a region on a user'"'"'s head;
a head-mounted camera configured to capture images indicative of the user'"'"'s posture; and
a computer configured to;
calculate systolic and diastolic blood pressure values based on the PPG signal; and
identify orthostatic hypotension based on a drop of systolic blood pressure below a first threshold, and/or a drop of diastolic blood pressure below a second threshold, within a predetermined duration from a transition in the posture from supine to sitting posture, or from sitting to standing posture.
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Accused Products
Abstract
Described herein are embodiments of systems and a method to identify orthostatic hypotension and postural-orthostatic tachycardia syndrome. One system includes a head-mounted device configured to measure photoplethysmographic signal (PPG signal) at a region on a user'"'"'s head, and a head-mounted camera configured to capture images indicative of the user'"'"'s posture. Additionally, the system includes a computer that calculates systolic and diastolic blood pressure values based on the PPG signal, and identifies orthostatic hypotension based on a drop of systolic blood pressure below a first threshold, and/or a drop of diastolic blood pressure below a second threshold, within a predetermined duration from a transition in the posture from supine to sitting posture, or from sitting to standing posture.
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Citations
20 Claims
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1. A system configured to identify orthostatic hypotension, comprising:
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a head-mounted device configured to measure photoplethysmographic signal (PPG signal) at a region on a user'"'"'s head; a head-mounted camera configured to capture images indicative of the user'"'"'s posture; and a computer configured to; calculate systolic and diastolic blood pressure values based on the PPG signal; and identify orthostatic hypotension based on a drop of systolic blood pressure below a first threshold, and/or a drop of diastolic blood pressure below a second threshold, within a predetermined duration from a transition in the posture from supine to sitting posture, or from sitting to standing posture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system configured to identify Postural-Orthostatic Tachycardia Syndrome, comprising:
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a head-mounted device configured to measure photoplethysmographic signal (PPG signal) at a region on a user'"'"'s head; a head-mounted camera configured to capture images indicative of the user'"'"'s posture; and a computer configured to detect tachycardia based on the PPG signal, and to identify Postural-Orthostatic Tachycardia Syndrome based on detecting occurrence of the tachycardia within a predetermined duration from a transition in the posture from supine or sitting posture to standing posture. - View Dependent Claims (14)
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15. A method for identifying orthostatic hypotension, comprising:
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measuring, by a head-mounted device, a photoplethysmographic signal (PPG signal) at a region on a user'"'"'s head; capturing, by a head-mounted camera, images indicative of the user'"'"'s posture; calculating systolic and diastolic blood pressure values based on the PPG signal; and identifying orthostatic hypotension based on a drop of systolic blood pressure below a first threshold, and/or a drop of diastolic blood pressure below a second threshold, within a predetermined duration from a transition in the posture from supine to sitting posture, or from sitting to standing posture. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification