Summary: An international research alliance engineered a real-time clinical monitoring platform to eliminate delayed diagnoses and reduce healthcare costs in brain-injury cases. The system, named NeuroSense, integrates directly into external brain drainage lines.
By continuously auditing cerebrospinal fluid for critical biochemical shifts and flow malfunctions, this bedside device bypasses slow laboratory testing to catch life-threatening ICU infections before they cause permanent neural damage.
Key Facts
- The Drainage Infection Crisis: Approximately 25,000 hospital patients in the United States require fluid drains each year due to traumatic brain injuries, hydrocephalus, or brain hemorrhages.
- The Toll of Delayed Detection: Up to 20% of these cranial drainage cases result in infections that more than double the length of hospital stays.
- The Standard Laboratory Bottleneck: Current clinical protocols rely on manually extracting brain fluid samples and sending them to a lab, a delayed process that is typically performed only once every 24 to 48 hours.
- The NeuroSense Architecture: The newly developed NeuroSense platform connects directly to existing drainage lines to perform continuous analysis on vital chemical biomarkers: glucose, lactate, pH, and fluid flow rate.
- Bedside Micro-Sensor Hardware: The system consists of a 3D-printed device roughly the size of a smartphone that houses four specialized sensors, an electrochemical analyzer, and a live digital display.
- Global Academic Alliance: Led by Dr. Mahla Poudineh and PhD student Fatemeh Keyvani at Waterloo, the project unites researchers from University Medicine Rostock, MIT, and Harvard Medical School.
- The Commercialization Roadmap: Following successful initial validation, the team is designing an automated clinician alert system to prepare for large-scale clinical trials.
Source: University of Waterloo
A research team led by the University of Waterloo has created a new monitoring system to save lives and significantly reduce health-care costs in brain-injury cases through the early detection of infections in intensive care units.
“This platform is designed to almost instantly capture trends and identify complications before they become much more serious,” said Dr. Mahla Poudineh, a professor of electrical and computer engineering and the Canada Research Chair in Health Monitoring BioNano Devices at Waterloo.
In the United States alone, about 25,000 hospital patients with traumatic brain injuries and other conditions, including hydrocephalus and brain hemorrhage, require drains to remove excess brain fluid each year.
Up to 20 per cent of those cases result in infections that more than double the duration of hospital stays and lead to complications including severe meningitis, neural damage, disability and death.
Clinicians now try to catch infections by taking samples of brain fluid and sending them to laboratories for analysis, a labour-intensive process that can only be done once every day or two.
The international research team, which includes over a dozen members in Canada, Germany and the U.S., recognized an opportunity to improve patient outcomes and cut costs by continuously monitoring brain fluid for early signs of infection and reduced flow, which can also be a serious problem.
The result is NeuroSense, a monitoring system that connects to drainage lines to detect biomarkers of infection, including changes in glucose, lactate and pH, as well as flow rate, as brain fluid moves through them.
A 3D-printed device about the size of a smartphone contains four sensors connected to an electrochemical analyzer and a display so doctors and nurses can continuously monitor levels right at the bedside.
“The benefits include early warning of infection or drain malfunction, enabling faster, better treatment decisions,” said Fatemeh Keyvani, a PhD student in electrical and computer engineering at Waterloo who led the research.
NeuroSense performed well compared to standard testing in the lab and with a small number of patients in a hospital intensive care unit.
Researchers plan to add an alarm to automatically alert clinicians to problems, conduct larger clinical studies and refine components as they work towards potential commercialization.
In addition to Waterloo, the project involves researchers at University Medicine Rostock, the Massachusetts Institute of Technology and Harvard Medical School.
Key Questions Answered:
A: The physical drains required to remove excess brain fluid create a direct pathway for complications. When patients suffer from hemorrhages or traumatic injuries, doctors must insert drainage lines to relieve intracranial pressure, but up to 20% of these cases result in infections that double hospital stays.
A: By turning the drainage line itself into a live diagnostic laboratory. Instead of forcing nurses to manually extract fluid and wait days for lab results, the device attaches right to the tube, reading chemical shifts and flow metrics instantly as the fluid moves through the line.
A: It continuously monitors a critical four-part biological profile: glucose levels, lactate levels, fluid pH, and the physical flow rate. Sudden changes in these chemical biomarkers signal that the body is fighting an infection or that the drain is malfunctioning.
Editorial Notes:
- This article was edited by a Neuroscience News editor.
- Journal paper reviewed in full.
- Additional context added by our staff.
About this neuroscience and neurotech research news
Author: Ryon Jones
Source: University of Waterloo
Contact: Ryon Jones – University of Waterloo
Image: The image is credited to Neuroscience News
Original Research: Closed access.
“A platform for near real-time and multiplexed monitoring of cerebrospinal fluid biomarkers and flow in neurocritical care” by Fatemeh Keyvani, Luisa M. Muller, Natalie Fudge, Bridget MacLean, Agosh Saini, Joshua Khatri, Thomas Kriesen, Matthias Wittstock, Florian A. Gessler, Robert Langer, Joshua D. Bernstock, Shriya Srinivasan, and Mahla Poudineh. Science Translational Medicine
DOI:10.1126/scitranslmed.aeb1381
Abstract
A platform for near real-time and multiplexed monitoring of cerebrospinal fluid biomarkers and flow in neurocritical care
Real-time monitoring of cerebrospinal fluid (CSF) is critical in intensive care units for the timely management of complications such as infection and mechanical malfunction in patients with external ventricular drainage systems. Current practice relies on intermittent CSF sampling for laboratory-based biomarker analysis and manual inspection, resulting in delayed reporting and intervention.
To address these limitations, we developed NeuroSense, a multiplexed sensing platform that integrates with standard external ventricular drainage systems to enable near real-time monitoring of key CSF (bio)markers, including glucose, lactate, pH, and flow rate, that are essential for detecting infection and drain dysfunction.
NeuroSense incorporates glucose and lactate aptamer–based electrochemical biosensors, a polydopamine pH sensor, and an impedance-based flow sensor. Validation in simulated conditions demonstrated sensor specificity, stability in human CSF for several days, and ethylene-oxide sterilization compatibility.
Evaluation in patients hospitalized in intensive care unit demonstrated strong correlation with clinical reference standards. By providing near real-time bedside assessment,
NeuroSense has the potential to improve temporal resolution for detection of biomarker trends and drain malfunction indicators.
