![]() Joseph Meleca, MD, otolaryngology resident in the Head & Neck Institute and first author of the study, remarks, “The findings showed an inverse relationship between PTA and age for individual patients, meaning that patients’ PTA improved with age.” He notes that this may be confounded by younger patients having resolution of ANSD and older patients with more severe hearing loss having undergone cochlear implantation. Although less strong, there was still a statistically significant association between initial PTA to most recent PTA ( R = 0.51, P < 0.044). Among the key findings, the team identified a strong correlation between SDT/PTA ( R = 0.82, P < 0.001) performed at the same time and between initial and most recent SDT audiograms ( R = 0.73, P < 0.001). The researchers then performed an analysis to determine associations between PTA and SDT, evaluating both initial and most recent audiograms. On the most recent audiograms, the average SDT and PTA worsened to 49.4 and 53.0 dB, respectively. On initial audiograms, the average SDT and PTA were 47.5 and 45.7 dB, respectively. ![]() The median age for the first and most recent audiograms was 1.94 (0.45–13.68) and 4.22 (0.97–14.61) years, respectively. ANSD can present itself bilaterally or unilaterally, therefore, the physicians evaluated each ear with ANSD separately. Anne and colleagues aimed to better understand the evolution of ANSD by evaluating PTA and SDT data from patients’ first and most recent testing.Īdvertising Policy A closer look at the findingsĪfter exclusionary criteria were applied, an analysis was performed on 50 ears (28 patients). It does not matter which voice stimulus they respond to, only that their response is reliable.ĭr. Typically, a child responds best to their name being called, however, other children respond best to nonsense words that carry a different intonation or their favorite song being sung. SDT tests a patient’s ability to recognize the presence of sound it is administered by an audiologist using their voice to obtain a response from the child at a certain decibel level. PTA is an evaluative measure to determine a patient’s average hearing threshold in dB HL at 500, 10 Hz, three frequencies thought to best represent the typical ranges heard in speech. Using audiometric data obtained from Cleveland Clinic and Texas Children’s Hospital, the researchers aimed to examine correlations between pure tone averages (PTA) and speech detection thresholds (SDT) over time. “There is also wide clinical variability in presentation and symptoms, which contributes to a growing need to understand and treat the disorder,” says Samantha Anne, MD, pediatric otolaryngologist in Cleveland Clinic’s Head & Neck Institute and senior author of the study. ![]() The advent of universal newborn hearing screening programs in the U.S over the past two decades with combined use of oto-acoustic emissions (OAEs) and auditory brainstem response (ABR) testing has led to earlier diagnoses and rehabilitation for patients with the condition. Previous studies have shown that up to 15% of pediatric hearing loss may be associated with ANSD 1. While the exact etiology of ANSD is unknown, the condition is characterized by a disorder in the transmission of sound from the inner ear to the brain. We do not endorse non-Cleveland Clinic products or services Policy Understanding the evolution of ANSD and audiometric testing Advertising on our site helps support our mission. Cleveland Clinic is a non-profit academic medical center. ![]()
0 Comments
Leave a Reply. |