Abstract
Objective Since 2001 all Dutch Neonatal Intensive Care Units use a highly reliable automated auditory brainstem response (AABR) newborn hearing screening device, the (ALGO™portable). A more recent AABR newborn hearing screening device, the MB11 BERAphone ®, does not make use of disposable ear couplers and has a different algorithm, a possible advantage with regard to a faster response acquisition. Use of the MB11 BERAphone ® is therefore potentially more cost effective and faster. This study compares test results and suitability of the MB11 BERAphone ® to the ALGO™portable as reference AABR hearing screening test for newborns during neonatal intensive care admission. Methods In 54 NICU graduates [median GA 31 2/7 weeks, median BW 1760 g] 55 (110 ears) hearing screening test results and total test time were examined with both the MB11 BERAphone ® and ALGO™portable. Test time was measured from the start of the procedure, including child preparation, until a bilateral result (pass/refer) was obtained. Results The median postconceptional age of testing was 34 3/7 weeks (range 30–41 6/7). In 3 ears MB11 BERAphone ® screening failed due to continuous myogenic activity. In 104/107 ears final results were congruent [87/107 (81%) pass; 17/107 (16%) refer] leaving an incongruity in 3 ears of 2 infants: MB11 BERAphone ® “refer” and ALGO™portable “pass”. Diagnostic investigative audiology confirmed a 35 dB unilateral conductive hearing loss in 1 child. At 15 months of age speech and language development in the other child was normal. When using the ALGO™portable as reference test, the sensitivity of the MB11 BERAphone ® is 100% (17/17), specificity 97% (87/90). The mean MB11 BERAphone ® test time was slightly, but not significantly, shorter 11.4 min (SD 6.6) than with the ALGO™portable 13.9 ( p < 0.08). Conclusion The MB11 BERAphone ® is a reliable and feasible hearing screening device for use with NICU graduates under NICU circumstances. It is potentially more cost effective than the ALGO™portable.
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