Swiss develop wireless cameras to monitor vital signs of premature babies

Swiss researchers said Monday they have developed a wireless camera system to monitor vital signs in premature babies, a move that could replace uncomfortable and highly inaccurate skin sensors.

The skin sensors currently used to monitor vital signs in babies born prematurely generate false alarms in up to 90% of cases, mainly set off by the baby’s movement.

“This is a source of discomfort for the babies, because we have to check on them every time,” Jean-Claude Fauchere, a doctor at University Hospital Zurich’s neonatal clinic, explained in a statement.

“It’s also a significant stress factor for nurses and a poor use of their time -- it distracts them from managing real emergencies and can affect quality of care,” he added.

His hospital is preparing to begin tests of a new, contactless system created by researchers at the EPFL polytechnical university in Lausanne and at the Swiss Center for Electronics and Microtechnology, CSEM, in Neuchatel, the two schools said in a statement.

The system should allow premature babies kept warm in neonatal incubators to be medically monitored using highly sensitive cameras that detect the newborn’s pulse by detecting and analysing its skin colour, which changes ever so slightly every time its heart beats.

“Breathing is monitored by measuring movements of its thorax and shoulders. At night, infrared cameras take over, which means that monitoring can be carried out non-stop,” the statement said.
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New touchless device to detect heart problems early

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 Researchers at a Canadian university have developed a new touchless device for monitoring vital signs that could lead to improved detection and prevention of some cardiovascular issues, as well as greater independence for older adults. 
 

Using patent-pending technology called Coded Hemodynamic Imaging, the device developed by researchers at the University of Waterloo monitors a patient's blood flow at multiple arterial points simultaneously and without direct contact with the skin, a university statement said. It is ideal for assessing patients with painful burns, highly contagious diseases, or infants in neonatal intensive care whose tiny fingers make traditional monitoring difficult.

"Traditional systems in wide use now take one blood-pulse reading at one spot on the body. This device acts like many virtual sensors that measure blood-flow behaviour on various parts of the body. The device relays measurements from all of these pulse points to a computer for continuous monitoring," said Robert Amelard, a systems design engineer at Waterloo.

"By way of comparison, think of measuring the traffic flow across an entire city rather than through one intersection," said Amelard, who is a recipient of the prestigious Alexander Graham Bell Canada Graduate Scholarship from the Natural Sciences and Engineering Research Council of Canada.

Continuous data collection at different parts of the body provides a more complete picture of what's happening in the body. Whole-body imaging opens doors for advanced monitoring that can't be done with the traditional, single-point methods.

"Since the device can also scan multiple patients individually at once and from a distance, consider the potential in mass emergency scenarios or long-term care homes," said professor Alexander Wong of the Faculty of Engineering at Waterloo and Canada Research Chair in Medical Imaging Systems.

"This technology provides for a more predictive approach to monitor vitals and the potential for its use is extensive, such as indicating arterial blockages that might otherwise go undetected, or warning older adults who risk falling as a result of getting dizzy when they stand," Wong said.