Key result
A wrist-worn wearable device detected simulated hypoxic events and triggered drug release within 10 seconds, with significant changes in oxygenation levels before and after the events (p<0.001).
Why the study?
Opioid-induced overdose is a leading cause of death, motivating the development of a portable, wrist-worn closed-loop device for overdose detection and rapid naloxone delivery.
A novel wrist-worn wearable device demonstrated the ability to detect hypoxia and trigger simulated drug release within 10 seconds, offering a potential closed-loop solution for opioid overdose.
Answers are grounded in this paper and cite their sources.
Demonstrates proof-of-concept for closed-loop wearable rescue therapy during hypoxia; leaves open.
Opioid-induced overdose is one of the leading causes of death among the US population under the age of 50. In 2021 alone, the death toll among opioid users rose to a devastating number of over 80,000. The overdose process can be reversed by the administration of naloxone, an opioid antagonist that rapidly counteracts the effects of opioid-induced respiratory depression. The idea of a closed-loop opioid overdose detection and naloxone delivery has emerged as a potential engineered solution to mitigate the deadly effects of the opioid epidemic. In this work, we introduce a wrist-worn wearable device that overcomes the portability issues of our previous work to create a closed-loop drug-delivery system, which includes (1) a Near-Infrared Spectroscopy (NIRS) sensor to detect a hypoxia-driven opioid overdose event, (2) a MOSFET switch, and (3) a Zero-Voltage Switching (ZVS) electromagnetic heater. Using brachial artery occlusion (BAO) with human subjects (n = 8), we demonstrated consistent low oxygenation events. Furthermore, we proved our device's capability to release the drug within 10 s after detecting a hypoxic event. We found that the changes in the oxyhemoglobin, deoxyhemoglobin and oxygenation saturation levels (SpO₂) were different before and after the low-oxygenation events ($p<$0.001). Although additional human experiments are needed, our results to date point towards a potential tool in the battle to mitigate the effects of the opioid epidemic.
No takes yet. Share an insight, caveat, or question.
Agudelo et al. (2023) studied Opioid overdose (simulated hypoxia) (n=8). Wrist-worn wearable device for closed-loop opioid overdose detection and naloxone delivery vs. Baseline (before low-oxygenation event) was evaluated on Changes in oxyhemoglobin, deoxyhemoglobin and oxygenation saturation levels (SpO2) (p=<0.001). A wrist-worn wearable device detected simulated hypoxic events and triggered drug release within 10 seconds, with significant changes in oxygenation levels before and after the events (p<0.001).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: