Pilot Outcomes

Publication: Predicting Orthostatic Symptoms Using a Multiparameter Wearable Sensor

Authors: Ziad A Elhajjaji, Amar S Basu Abstract Orthostatic disorders affect 30% of older adults and increase the risk for falls. The current diagnostic standard, the blood pressure cuff, cannot capture the rapid, multifaceted dynamics of orthostasis physiology, resulting in frequent underdiagnosis. This paper demonstrates multiparameter, real-time measurement of orthostasis using TRACE, an earlobe mounted wearable developed in our group. In prior work, we demonstrated a novel metric called orthostatic hypovolemia (OHV1), the initial loss in cephalic (head) blood volume immediately upon standing. This study significantly advances our prior work by introducing an additional 2 metrics: OHV2, the cephalic blood volume deficit after the body achieves homeostasis after standing; and postural orthostatic tachycardia (POT), the increase in heart rate. The 3 metrics were evaluated in 101 older adults who wore the TRACE device during postural…

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Grant Funding: NIH Trailblazer Award

This is an R21 award for $650,000 over a period of 3 years. Their smartphone app prototype capitalizes on the handheld nature of a mobile phone and uses its built-in sensors to gauge grip strength to enhance preoperative screening for potential risks of complications post cardiac surgery. This effort will contribute to the growing portfolio of smartphone-based health monitoring solutions actively being developed by Wang and his research team. Source: https://today.ucsd.edu/story/uc-san-diego-researcher-receives-nih-trailblazer-award

Continue ReadingGrant Funding: NIH Trailblazer Award

Oral Presentation: American Speech Language Hearing Association Conference – 2024

Presented " Quality Management Framework for an Automated, Phone-Based Telehealth Platform for Cognitive Rehabilitation Therapy" at the ASHA Conference in Seattle, WA on November 11, 2024 Source: https://plan.core-apps.com/asha2024/event/6a3d638ef5896a352b49fbfd8b5f1248

Continue ReadingOral Presentation: American Speech Language Hearing Association Conference – 2024

Publication: Oscillometric blood pressure measurements on smartphones using vibrometric force estimation

Authors: Colin Barry, Yinan Xuan, Ava Fascetti, Alison Moore, Edward J Wang Abstract This paper proposes a smartphone-based method for measuring Blood Pressure (BP) using the oscillometric method. For oscillometry, it is necessary to measure (1) the pressure applied to the artery and (2) the local blood volume change. This is accomplished by performing an oscillometric measurement at the finger's digital artery, whereby a user presses down on the phone's camera with steadily increasing force. The camera is used to capture the blood volume change using photoplethysmography. We devised a novel method for measuring the force applied of the finger without the use of specialized smartphone hardware with a technique called Vibrometric Force Estimation (VFE). The fundamental concept of VFE relies on a phenomenon where a vibrating object is dampened when an external force is…

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Oral Presentation: NIA workshop – Leveraging Adaptive Technology (“Just-in-Time”) Interventions for Aging and Alzheimer’s Disease and Alzheimer’s Disease-related Dementias

Dr. Inbal Billie Nahum-Shani (PI) presented work from this pilot project during a talk titled "Adaptive interventions and JITAIs as decision policies: What and why?" as part of Session 1 - Digital adaptive interventions: decision-focused evidence production held on October 16, 2024. Source: NIA Event Page

Continue ReadingOral Presentation: NIA workshop – Leveraging Adaptive Technology (“Just-in-Time”) Interventions for Aging and Alzheimer’s Disease and Alzheimer’s Disease-related Dementias