Ambulatory Dehydration Monitoring via Multi-Sensor Fusion
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Solution Overview
Problem
Chemotherapy-induced dehydration, particularly due to chemotherapy-induced nausea and vomiting (CINV) and chemotherapy-induced diarrhea (CID), poses significant challenges in cancer therapy, leading to treatment alterations, dosage reductions, delays, and termination, with current monitoring methods being inadequate for early detection and management.
Innovation Solution
Ambulatory medical devices (AMDs) equipped with signal receiver circuits and assessment circuits that utilize heart sound information, impedance, posture, activity, and other physiologic data to determine indications of dehydration, vomiting, and diarrhea, enabling early detection and confirmation of these conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If point-of-care diagnostics are used to monitor cardiotoxicity, then cardiac function can be assessed, but early detection of dehydration and vomiting during chemotherapy is insufficient
Solution Approach 1:
The ambulatory medical device is configured to perform multiple monitoring functions including cardiotoxicity assessment, dehydration detection, vomiting detection, and diarrhea detection using a single integrated system with multiple sensors (heart sound sensor, impedance sensor, accelerometer, respiration sensor), eliminating the need for separate diagnostic tools and enabling comprehensive chemotherapy monitoring
Solution Approach 2:
The system performs preliminary detection of dehydration and vomiting conditions before they lead to severe complications or treatment termination. By continuously monitoring physiological parameters and detecting early signs of dehydration (impedance changes, heart sound alterations) and vomiting (accelerometer patterns, respiration changes), the system enables preventive intervention
2Reliability
If frequent patient monitoring is implemented to detect worsening conditions early, then patient outcomes can be improved, but device complexity and monitoring requirements increase
Solution Approach 1:
A single ambulatory medical device integrates multiple sensing capabilities (heart sound, impedance, acceleration, respiration) to monitor various chemotherapy side effects simultaneously, reducing the need for multiple separate devices and simplifying the overall monitoring system while improving comprehensive patient care
Solution Approach 2:
The system automatically processes sensor data locally using embedded algorithms to detect dehydration, vomiting, and diarrhea conditions without requiring constant external intervention. The device self-manages data acquisition, processing, and alert generation, reducing the burden on healthcare providers while maintaining continuous monitoring
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system allows for timely detection and management of dehydration, reducing its adverse effects on cancer therapy, improving patient outcomes and healthcare efficiency by providing early alerts and adjustments in treatment protocols.
Implementation Method 1
a heart sound sensor configured to obtain heart sound information of the patient
Implementation Method 2
an impedance sensor configured to obtain impedance information of the patient
Implementation Method 3
an accelerometer configured to obtain posture information of the patient
Implementation Method 4
a respiration sensor configured to obtain respiration information of the patient
Data Source
AI summary
Systems and methods to determine an indication of patient dehydration are disclosed, including receiving first and second physiologic information of a patient, the first physiologic information including heart sound information of the patient and the second physiologic information different than the first physiologic information, and determining the indication of patient dehydration using the received first and second physiologic information.