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Acoustic absorbance measurements in neonates exposed to smoking during pregnancy.
OBJECTIVE: To analyze acoustic absorbance using wideband tympanometry in neonates exposed to passive smoking during pregnancy.
METHOD: A study comprising 54 neonates in the control group (CG - unexposed) and 19 in the study group (SG - exposed) was carried out. Subjects were submitted to the wideband tympanometry test and subsequent analysis of absorbance of 17 frequencies.
RESULT: Low frequencies had a lower level of absorbance compared to high frequencies for both ambient and peak pressures, with no difference between the groups.
CONCLUSION: No effect of passive smoking on acoustic absorbance measurements in neonates was observed.
METHOD: A study comprising 54 neonates in the control group (CG - unexposed) and 19 in the study group (SG - exposed) was carried out. Subjects were submitted to the wideband tympanometry test and subsequent analysis of absorbance of 17 frequencies.
RESULT: Low frequencies had a lower level of absorbance compared to high frequencies for both ambient and peak pressures, with no difference between the groups.
CONCLUSION: No effect of passive smoking on acoustic absorbance measurements in neonates was observed.
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