Correlation between Otoacoustic Emissions Transient Evoked and Distortion Product in a Group of Neonates
Objectives: This study aims to correlate the results of transient evoked otoacoustic emission (TEOAE) and distortion product (DPOAE) of neonates born in a low risk maternity.
Method: A cross-sectional descriptive study conducted by researchers of São Paulo State University on Gota de Leite maternity. All children underwent hearing screening using TEOAE and distortion product with the AccuScreen (Madsen). To analyze the results the equipment’s criteria pass/refer were adopted. It was considered that the neonate pass on TEOAE when eight peaks were present and on the DPOAE when there is response in three frequencies tested.
Results: From May to November 2013, hearing screening in 579 neonates was performed. In the sample studied, it was observed that the pass rate for TEOAE was 95% and for DPOAE was 91%. When the two procedures were correlated it was observed that 525 (91%) neonates passed on both the procedures, 26 (4.5%) passed on TEOAE and was referred on DPOAE, 23 (4%) failed on both procedures and, 5 (0.5%) referred on TEOAE and passed on DPOAE. The inferential analysis showed a significant strong positive relationship between the two procedures.
Conclusion: In this study, there were observed a higher rate of failure on distortion product otoacoustic emission, however, there was correlation between the results of both procedures that demonstrated the reliability of the methods employed.