RT Journal Article
SR Electronic
T1 Tracheal sound level as a potential diagnostic tool for pulmonary obstructive syndromes
JF European Respiratory Journal
JO Eur Respir J
FD European Respiratory Society
SP p935
VO 38
IS Suppl 55
A1 Tudor Andrei Cernomaz
A1 Daniela Boisteanu
A1 Raluca Vasiluta
A1 Traian Mihaescu
YR 2011
UL http://erj.ersjournals.com/content/38/Suppl_55/p935.abstract
AB Aim and objectives: to asses the possibility of developing a tracheal sound analysis tool capable of diagnosing obstructive syndromes.Material and methods: 34 subjects were stratified to the obstructive or control group. Tracheal sound was recorded during a forced expiratory maneuver; acquired signals were analyzed in terms of sound level vs time and a linear regression model was computed. The obstructive subgroup included 21 vs 13 controls. We found statistically significant between group differences for expiratory duration and for the linear regression and negative significant correlations between slope and expiratory duration, FEV1 and FEV1/VC. Building the ROC curve a threshold value of -19.67 for the slope of the linear regression model will associate a sensitivity of 95% and a specificity of 84.6% for this test.Conclusion: Available data suggests that tracheal sound level analysis could be developed into a diagnostic and monitoring tool; additional mathematical approaches are probably necessary.