2025 · Journal of clinical monitoring and computing · open access
A novel wearable bioimpedance sensor for continuous monitoring of fluid balance: a study on isotonic hypovolemia in healthy adults
Noddeland et al.
The finding, in our words
In 27 healthy adults, a wearable bioimpedance sensor detected a 13.6 per cent increase in extracellular resistance after furosemide-induced fluid loss of 1.4 kg, which correlated strongly with measured urine output. This demonstrates the device can track fluid balance non-invasively, though clinical validation is still required.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
This review establishes that microsampling across blood, saliva, urine and stool matrices offers validated workflows and regulatory recognition for human biomonitoring comparable to conventional methods. It finds that these decentralised approaches enhance participant acceptability and enable screening in remote or low-resource settings.
This study demonstrates that a memristor sensor can identify distinct electrical signatures in saliva and urine corresponding to different ovulation phases, suggesting a potential route for noninvasive home fertility monitoring.
A smart diaper system that analyses colour changes in urinalysis strips detected urinary tract infection biomarkers correctly in 14 of 15 simulated samples, suggesting potential for automated screening in high-risk groups such as infants and the elderly. The system transmits data via the Internet of Medical Things for remote monitoring, though the authors acknowledge that clinical validation in real patients is still needed.
Monisha et al., Scientific reports (paywalled) · source ↗
Warehouse workers frequently presented with concentrated urine pre- and post-shift, and a greater within-shift worsening of urine colour was associated with higher wearable-derived ergonomic risk movement counts. The study demonstrates that self-collected urine samples combined with wearable sensor data can remotely identify hydration-related injury risk in occupational settings.
Agostinelli et al., Frontiers in public health (paywalled) · source ↗
Salivary cortisol is suitable as an adjunctive measure in decentralised monitoring, with lateral-flow assays providing rapid low-cost discrete measurements and wearable platforms enabling higher-frequency collection but facing biofouling and calibration challenges. Suitability requires validation in authentic saliva against reference methods, not merely low detection limits.