Echo Therapeutics, Inc. ECTE, a company developing its needle-free Symphony^® Transdermal Continuous
Glucose Monitoring (tCGM) System as a non-invasive, wireless, transdermal
continuous glucose monitoring system, presented an expanded analysis of data
collected from the clinical study of Echo's Symphony tCGM System in critically
ill patients at Tufts Medical Center in Boston, MA. The data were presented
during Display and Professor Walk Rounds on Sunday, January 20, 2013 at the
Society of Critical Care Medicine's 42^nd Critical Care Congress.
The poster, entitled "Accuracy of a Novel Non-Invasive Transdermal Continuous
Glucose Monitor in Critically Ill Patients," presented by the principal
investigator, Stanley A. Nasraway, M.D., FCCM, provided data from fifteen (15)
patients who were undergoing elective cardiac surgery. The patients' glucose
levels were monitored continuously for 24 hours. The key findings include:
o Using 570 Symphony tCGM glucose readings paired with reference blood
glucose measurements, the Mean Absolute Relative Difference (MARD) was
12.3%.
o The Clarke Error Grid (CEG) analysis showed that 81.7% of the readings
appeared in the grid's A zone with the remaining 18.3% percent falling in
the B zone. The grid's A zone represents results that are the most
clinically accurate and results in the B zone are considered clinically
acceptable.
o The Continuous Glucose-Error Grid analysis (CG-EGA) showed that 99.6% of
the readings were clinically accurate (A) and 0.0% were benign (B) errors
with a combined A+B of 99.6%.
o 94.4% of the calculated CGM rates were within +/-1 mg/dL/min of the
reference rate and 99.6% were within +/-2 mg/dL/min.
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