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An electronic nose that sniffs sleep apnea
Thursday October 25, 2012 07:39:11 PM,
IANS
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Berlin: An electronic
nose used in detecting molecules in a patient's breath could be
tweaked to diagnose obstructive sleep apnea, dangerous pauses in
breathing.
The gold standard used to identify sleep apnea is an overnight
sleep test, a technically demanding, time-consuming and
cost-intensive system.
Electronic noses have shown to distinguish between a number of
diseases. They do this by analysing the pattern of volatile
organic compounds in breath samples.
This is the first study that has assessed whether the electronic
nose could be used to confirm the presence of sleep apnea, the
European Respiratory Journal reports.
Researchers analysed the breath of 40 sleep apnea patients and 20
healthy patients who did not suffer from this disorder, according
to a Marburg statement.
Timm Greulich, from the Marburg Hospital in Germany, who led the
study, said: "The electronic nose could be useful in two ways:
First, it can rule out the disease in a low prevalence population.
Second, in a population with a high risk of sleep apnea, the
device could be used to help decide who would need to undergo an
overnight sleep examination."
"Following these results, we foresee that the use of the
electronic nose could reduce costs by more appropriately selecting
patients who require the sleep examination," Greulich said.
The study also aimed at assessing whether the electronic nose
could detect the effects of the standard treatment for sleep apnea,
continuous positive airway pressure (CPAP).
The results found that the electronic nose could effectively
diagnose sleep apnea. The statistical analysis showed that it was
detected with a sensitivity of 93 percent.
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