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1.
Int J Audiol ; 62(1): 44-52, 2023 01.
Article in English | MEDLINE | ID: mdl-35819808

ABSTRACT

OBJECTIVE: This study evaluated the influence of tinnitus and hearing loss on the functional status of military Service members and Veterans. DESIGN: Participants completed audiologic testing and self-report instruments to assess tinnitus, hearing, and general functioning. We conducted multiple linear regression analyses using cross-sectional data with functional status as the dependent variable. The primary independent variables were tinnitus and average low-, high-, and extended high-frequency hearing thresholds. Secondary independent variables were subjective tinnitus severity and hearing difficulties. Each of the independent variables was modelled separately for Service members and Veterans; covariates for each multivariable model were identified a priori and, depending on the association being modelled, included age, gender, blast-wave exposure, and history of military traumatic brain injury. STUDY SAMPLE: Data were analysed from 283 Service members and 390 Veterans. RESULTS: After controlling for potential confounders, presence of tinnitus, tinnitus severity, average low-frequency hearing thresholds, and subjective hearing difficulties were significantly associated with functional status in Service members and Veterans. CONCLUSIONS: These results suggest that tinnitus and poorer low-frequency hearing, and the perceived severity of tinnitus and hearing difficulties, may be associated with poorer functional status among Service members and Veterans.


Subject(s)
Deafness , Hearing Loss , Military Personnel , Tinnitus , Veterans , Humans , Cross-Sectional Studies , Functional Status
2.
Nucleic Acids Res ; 44(6): 2888-97, 2016 Apr 07.
Article in English | MEDLINE | ID: mdl-26825461

ABSTRACT

Fever is commonly used to diagnose disease and is consistently associated with increased mortality in critically ill patients. However, the molecular controls of elevated body temperature are poorly understood. We discovered that the expression of RNA-binding motif protein 3 (RBM3), known to respond to cold stress and to modulate microRNA (miRNA) expression, was reduced in 30 patients with fever, and in THP-1-derived macrophages maintained at a fever-like temperature (40 °C). Notably, RBM3 expression is reduced during fever whether or not infection is demonstrable. Reduced RBM3 expression resulted in increased expression of RBM3-targeted temperature-sensitive miRNAs, we termed thermomiRs. ThermomiRs such as miR-142-5p and miR-143 in turn target endogenous pyrogens including IL-6, IL6ST, TLR2, PGE2 and TNF to complete a negative feedback mechanism, which may be crucial to prevent pathological hyperthermia. Using normal PBMCs that were exogenously exposed to fever-like temperature (40 °C), we further demonstrate the trend by which decreased levels of RBM3 were associated with increased levels of miR-142-5p and miR-143 and vice versa over a 24 h time course. Collectively, our results indicate the existence of a negative feedback loop that regulates fever via reduced RBM3 levels and increased expression of miR-142-5p and miR-143.


Subject(s)
Feedback, Physiological , Fever/genetics , Leukocytes, Mononuclear/immunology , MicroRNAs/genetics , RNA-Binding Proteins/genetics , Body Temperature , Body Temperature Regulation/genetics , Cell Line , Cytokine Receptor gp130/genetics , Cytokine Receptor gp130/immunology , Fever/immunology , Fever/pathology , Gene Expression Profiling , Gene Expression Regulation , Humans , Interleukin-6/genetics , Interleukin-6/immunology , Leukocytes, Mononuclear/cytology , Leukocytes, Mononuclear/metabolism , Macrophages/cytology , Macrophages/immunology , MicroRNAs/immunology , Primary Cell Culture , RNA, Small Interfering/genetics , RNA, Small Interfering/metabolism , RNA-Binding Proteins/antagonists & inhibitors , RNA-Binding Proteins/immunology , Receptors, Prostaglandin E/genetics , Receptors, Prostaglandin E/immunology , Signal Transduction , Toll-Like Receptor 2/genetics , Toll-Like Receptor 2/immunology , Tumor Necrosis Factor-alpha/genetics , Tumor Necrosis Factor-alpha/immunology
3.
Ear Hear ; 37(3): e173-87, 2016.
Article in English | MEDLINE | ID: mdl-26656318

ABSTRACT

OBJECTIVES: (1) To characterize the influence of type 2 diabetes mellitus (DM) on cortical auditory-evoked potentials (CAEPs) separate from the effects of normal aging, and (2) to determine whether the disease-related effects are modified by insulin dependence. DESIGN: A cross-sectional study was conducted in a large cohort of Veterans to investigate the relationships among type 2 DM, age, and CAEPs in randomly selected participants with (N = 108) and without (N = 114) the disease and who had no more than a moderate hearing loss. Participants with DM were classified as insulin-dependent (IDDM, N = 47) or noninsulin-dependent (NIDDM, N = 61). Other DM measures included concurrent serum glucose, HbA1c, and duration of disease. CAEPs were evoked using a passive homogeneous paradigm (single repeating stimulus) by suprathreshold tones presented to the right ear, left ear, or both ears. Outcome measures were adjusted for the pure-tone threshold average for frequencies of 0.5, 1, and 2 kHz and analyzed for differences in age effects between participant groups using multiple regression. RESULTS: There is little variation across test ear conditions (left, right, binaural) on any CAEP peak in any of the groups. Among no-DM controls, P2 latency increases about 9 msec per decade of life. DM is associated with an additional delay in the P2 latency of 7 and 9 msec for the IDDM and NIDDM groups, respectively. Moreover, the slope of the function relating P2 latency with age is similar across participant groups and thus the DM effect appears constant across age. Effects on N1 latency are considerably weaker, with age effects of less than 4 msec per decade across all groups, and DM effects of only 2 (IDDM) or 3 msec (NIDDM). In the NIDDM group, the slope relating N1 latency to age is steeper relative to that observed for the no-DM group, providing some evidence of accelerated "aging" for this CAEP peak. DM does not substantially reduce N1-P2 amplitude and age relationships with N1-P2 amplitude are effectively absent. There is no association between pure-tone average at 0.5, 1, and 2 kHz and any aspect of CAEPs in this cohort. CONCLUSIONS: In a large cohort of Veterans, we found that type 2 DM is associated with prolonged N1 and P2 latencies regardless of whether insulin is required to manage the disease and independent of peripheral hearing thresholds. The DM-related effects on CAEP latencies are threefold greater for P2 compared with N1, and there is little support that at the cortical level, IDDM participants had poorer responses compared with NIDDM participants, although their responses were more variable. Overall, these results indicate that DM is associated with slowed preattentive neural conduction. Moreover, the observed 7 to 9 msec P2 latency delay due to DM is substantial compared with normal age changes in P2, which are 9 msec per decade of life in this cohort. Results also suggest that whereas N1 latency changes with age are more pronounced among individuals with DM versus without DM, there was no evidence for more rapid aging of P2 among patients with DM. Thus, the damage responsible for the major DM-related differences may occur early in the DM disease process. These cross-sectional results should be verified using a longitudinal study design.


Subject(s)
Aging/physiology , Diabetes Mellitus, Type 2/physiopathology , Evoked Potentials, Auditory/physiology , Aged , Blood Glucose/metabolism , Case-Control Studies , Cohort Studies , Cross-Sectional Studies , Diabetes Mellitus, Type 2/drug therapy , Diabetes Mellitus, Type 2/metabolism , Electroencephalography , Female , Glycated Hemoglobin/metabolism , Humans , Hypoglycemic Agents/therapeutic use , Insulin/therapeutic use , Male , Middle Aged , Severity of Illness Index , Time Factors , Veterans
4.
Ear Hear ; 36(4): 381-94, 2015.
Article in English | MEDLINE | ID: mdl-25565662

ABSTRACT

OBJECTIVE: Type 2 diabetes is epidemic among veterans, approaching three times the prevalence of the general population. Diabetes leads to devastating complications of vascular and neurologic malfunction and appears to impair auditory function. Hearing loss prevention is a major health-related initiative in the Veterans Health Administration. Thus, this research sought to identify, and quantify with effect sizes, differences in hearing, speech recognition, and hearing-related quality of life (QOL) measures associated with diabetes and to determine whether well-controlled diabetes diminishes the differences. DESIGN: The authors examined selected cross-sectional data from the baseline (initial) visit of a longitudinal study of Veterans with and without type 2 diabetes designed to assess the possible differences in age-related trajectories of peripheral and central auditory function between the two groups. In addition, the diabetes group was divided into subgroups on the basis of medical diagnosis of diabetes and current glycated hemoglobin (HbA1c) as a metric of disease severity and control. Outcome measures were pure-tone thresholds, word recognition using sentences presented in noise or time-compressed, and an inventory assessing the self-perceived impact of hearing loss on QOL. Data were analyzed from 130 Veterans ages 24 to 73 (mean 48) years with well-controlled (controlled) diabetes, poorly controlled (uncontrolled) diabetes, prediabetes, and no diabetes. Regression was used to identify any group differences in age, noise exposure history, and other sociodemographic factors, and multiple regression was used to model each outcome variable, adjusting for potential confounders. Results were evaluated in relation to diabetes duration, use of insulin (yes, no), and presence of selected diabetes complications (neuropathy and retinopathy). RESULTS: Compared with nondiabetics, Veterans with uncontrolled diabetes had significant differences in hearing at speech frequencies, including poorer hearing by 3 to 3.5 dB for thresholds at 250 Hz and in a clinical pure-tone average, respectively. Compared with nondiabetic controls, individuals with uncontrolled diabetes also significantly more frequently reported that their hearing adversely impacted QOL on one of the three subscales (ability to adapt). Despite this, although they also had slightly poorer mean scores on both word recognition tasks performed, these differences did not reach statistical significance and all subjects performed well on these tasks. Compared with Veterans with controlled diabetes, those with uncontrolled disease tended to have had diabetes longer, be insulin-dependent, and have a greater prevalence of diabetic retinopathy. Results are generally comparable with the literature with regard to the magnitude of threshold differences and the prevalence of hearing impairment but extend prior work by providing threshold difference and hearing loss prevalence effect sizes by category of diabetes control and by including additional functional measures. CONCLUSIONS: In a cohort of Veterans with type 2 diabetes and relatively good hearing, significant effects of disease severity were found for hearing thresholds at a subset of frequencies and for one of the three QOL subscales. Significant differences were concentrated among those with poorly controlled diabetes based on current HbA1c. Results provide evidence that the observed hearing dysfunction in type 2 diabetes might be prevented or delayed through tight metabolic control. Findings need to be corroborated using longitudinal assessments.


Subject(s)
Diabetes Mellitus, Type 2/metabolism , Glycated Hemoglobin/metabolism , Hearing Loss/physiopathology , Quality of Life , Speech Perception , Veterans , Adult , Aged , Audiometry, Pure-Tone , Cohort Studies , Comorbidity , Cross-Sectional Studies , Diabetes Mellitus, Type 2/epidemiology , Diabetic Neuropathies/epidemiology , Diabetic Retinopathy/epidemiology , Female , Hearing Loss/epidemiology , Hearing Tests , Humans , Male , Middle Aged , Severity of Illness Index , United States/epidemiology , Young Adult
5.
Br J Haematol ; 162(2): 162-76, 2013 Jul.
Article in English | MEDLINE | ID: mdl-23679825

ABSTRACT

MicroRNAs (miRNAs) are key to the pathogenesis of human malignancies and increasingly recognized as potential biomarkers and therapeutic targets. Haematological malignancies, being the earliest human malignancies linked to aberrant miRNA expression, have consistently underpinned our understanding of the role that miRNAs play in cancer development. Here, we review the expanding roles attributed to miRNAs in the pathogenesis of different types of myeloid malignancies and highlight key findings.


Subject(s)
Hematologic Neoplasms/genetics , Leukemia, Myelogenous, Chronic, BCR-ABL Positive/genetics , Leukemia, Myeloid, Acute/genetics , MicroRNAs/genetics , Myeloproliferative Disorders/genetics , Animals , Gene Expression Regulation, Neoplastic , Humans , MicroRNAs/metabolism
6.
Ear Hear ; 32(1): 61-74, 2011 Feb.
Article in English | MEDLINE | ID: mdl-20625302

ABSTRACT

INTRODUCTION: A nonbehavioral method for monitoring ototoxicity in patients treated with cisplatin is needed because patients enduring chemotherapy may not be well or cooperative enough to undergo repeated hearing tests. Distortion-product otoacoustic emissions (DPOAEs) provide a nonbehavioral measure of auditory function that is sensitive to cisplatin exposure. However, interpreting DPOAE findings in the context of ototoxicity monitoring requires that their accuracy be determined in relation to a clinically accepted gold standard test. OBJECTIVES: Among patients receiving cisplatin for the treatment of cancer, we sought to (1) identify the combination of DPOAE metrics and ototoxicity risk factors that best classified ears with and without ototoxic-induced hearing changes; and (2) evaluate the test performance achieved by the composite measure as well as by DPOAEs alone. DESIGN: Odds of experiencing hearing changes at a given patient visit were determined using data collected prospectively from 24 Veterans receiving cisplatin. Pure-tone thresholds were examined within an octave of each subject's high-frequency hearing limit. DPOAE were collected as a set of four response growth (input/output) functions near the highest f2 frequency that yielded a robust response at L2 = L1 = 65 dB SPL. Logistic regression modeled the risk of hearing change using several DPOAE metrics, drug treatment factors, and other patient factors as independent variables. An optimal discriminant function was derived by reducing the model so that only statistically significant variables were included. Receiver operating characteristic curve analyses were used to evaluate test performance. RESULTS: At higher cisplatin doses, ears with better hearing at baseline were more likely to exhibit ototoxic hearing changes than those with poorer hearing. Measures of pre-exposure hearing, cumulative drug dose, and DPOAEs generated a highly accurate discriminant function with a cross-validated area under the receiver operating characteristic curve of 0.9. DPOAEs alone also provided an indication of ototoxic hearing change when measured at the highest DPOAE test frequency that yielded a robust response. CONCLUSIONS: DPOAEs alone and especially in combination with pre-exposure hearing and cisplatin dose provide an indication of whether or not hearing has changed as a result of cisplatin administration. These promising results need to be validated in a separate sample.


Subject(s)
Antineoplastic Agents/toxicity , Cisplatin/toxicity , Hearing Loss, Sensorineural/chemically induced , Otoacoustic Emissions, Spontaneous/drug effects , Adult , Aged , Antineoplastic Agents/therapeutic use , Audiometry, Pure-Tone , Auditory Threshold/drug effects , Cisplatin/therapeutic use , Female , Hearing Loss, Sensorineural/diagnosis , Humans , Male , Middle Aged , Predictive Value of Tests , Reference Standards
7.
Am J Audiol ; 30(4): 1023-1036, 2021 Dec 09.
Article in English | MEDLINE | ID: mdl-34633838

ABSTRACT

PURPOSE: Type 2 diabetes mellitus (DM2) is associated with impaired hearing. However, the evidence is less clear if DM2 can lead to difficulty understanding speech in complex acoustic environments, independently of age and hearing loss effects. The purpose of this study was to estimate the magnitude of DM2-related effects on speech understanding in the presence of competing speech after adjusting for age and hearing. METHOD: A cross-sectional study design was used to investigate the relationship between DM2 and speech understanding in 190 Veterans (M age = 47 years, range: 25-76). Participants were classified as having no diabetes (n = 74), prediabetes (n = 19), or DM2 that was well controlled (n = 24) or poorly controlled (n = 73). A test of spatial release from masking (SRM) was presented in a virtual acoustical simulation over insert earphones with multiple talkers using sentences from the coordinate response measure corpus to determine the target-to-masker ratio (TMR) required for 50% correct identification of target speech. A linear mixed model of the TMR results was used to estimate SRM and separate effects of diabetes group, age, and low-frequency pure-tone average (PTA-low) and high-frequency pure-tone average. A separate model estimated the effects of DM2 on PTA-low. RESULTS: After adjusting for hearing and age, diabetes-related effects remained among those whose DM2 was well controlled, showing an SRM loss of approximately 0.5 dB. Results also showed effects of hearing loss and age, consistent with the literature on people without DM2. Low-frequency hearing loss was greater among those with DM2. CONCLUSIONS: In a large cohort of Veterans, low-frequency hearing loss and older age negatively impact speech understanding. Compared with nondiabetics, individuals with controlled DM2 have additional auditory deficits beyond those associated with hearing loss or aging. These results provide a potential explanation for why individuals who have diabetes and/or are older often report difficulty understanding speech in real-world listening environments. SUPPLEMENTAL MATERIAL: https://doi.org/10.23641/asha.16746475.


Subject(s)
Diabetes Mellitus, Type 2 , Hearing Loss , Speech Perception , Veterans , Aged , Aging , Auditory Threshold , Cross-Sectional Studies , Diabetes Mellitus, Type 2/epidemiology , Hearing Loss/diagnosis , Hearing Loss/epidemiology , Humans , Middle Aged , Perceptual Masking , Speech
8.
J Am Acad Audiol ; 21(5): 301-14; quiz 357, 2010 May.
Article in English | MEDLINE | ID: mdl-20569665

ABSTRACT

BACKGROUND: There is disagreement about ototoxicity monitoring methods. Controversy exists about what audiometric threshold shift criteria should be used, which frequencies should be tested, and with what step size. An evaluation of the test performance achieved using various criteria and methods for ototoxicity monitoring may help resolve these issues. PURPOSE: (1) Evaluate test performance achieved using various significant threshold shift (STS) definitions for ototoxicity monitoring in a predominately veteran population; and (2) determine whether testing in (1/6)- or (1/3)-octave steps improves test performance compared to (1/2)-octave steps. RESEARCH DESIGN: A prospective, observational study design was used in which STSs were evaluated at frequencies within an octave of each subject's high-frequency hearing limit at two time points, an early monitoring test and the final monitoring test. STUDY SAMPLE: Data were analyzed from 78 ears of 41 patients receiving cisplatin and from 53 ears of 28 hospitalized patients receiving nonototoxic antibiotics. Cisplatin-treated subjects received a cumulative dosage > or =350 mg by the final monitoring test. Testing schedule, age, and pre-exposure hearing characteristics were similar between the subject groups. DATA COLLECTION AND ANALYSIS: Threshold shifts relative to baseline were examined to determine whether they met criteria based on magnitudes of positive STS (shifts of > or =5, 10, 15, or 20 dB) and numbers of frequencies affected (shifts at > or =1, 2, or 3 adjacent frequencies) for data collected using approximately (1/6)-, (1/3)-, or (1/2)-octave steps. Thresholds were confirmed during monitoring sessions in which shifts were identified. Test performance was evaluated with receiver operating characteristic (ROC) curves developed using a surrogate "gold standard"; true positive (TP) rates were derived from the cisplatin-exposed group and false positive (FP) rates from the nonexposed, control group. Best STS definitions were identified that achieved the greatest areas under ROC curves or resulted in the highest TP rates for a fixed FP rate near 5%, chosen to minimize the number of patients incorrectly diagnosed with ototoxic hearing loss. RESULTS: At the early monitoring test, average threshold shifts differed only slightly across groups. Test-frequency step size did not affect performance, and changes at one or more frequencies yielded the best test performance. At the final monitoring test, average threshold shifts were +10.5 dB for the cisplatin group, compared with -0.2 dB for the control group. Compared with the (1/2)-octave step size used clinically, use of smaller frequency steps improved test performance for threshold shifts at > or =2 or > or =3 adjacent frequencies. Best overall test performance was achieved using a criterion cutoff of > or =10 dB threshold shift at > or =2 adjacent frequencies tested in (1/6)-octave steps. Best test performance for the (1/2)-octave step size was achieved for shifts > or =15 dB at one or more frequencies. CONCLUSIONS: An ototoxicity monitoring protocol that uses an individualized, one-octave range of frequencies tested in (1/6)-octave steps is quick to administer and has an acceptable FP rate. Similar test performance can be achieved using (1/3)-octave test frequencies, which further reduces monitoring test time.


Subject(s)
Cisplatin/adverse effects , Drug Monitoring/methods , Hearing Loss/chemically induced , Otoacoustic Emissions, Spontaneous/drug effects , Antineoplastic Agents/adverse effects , Auditory Threshold/drug effects , Hearing Loss/diagnosis , Humans , Male , Middle Aged , Neoplasms/drug therapy , Prognosis , Prospective Studies , ROC Curve
9.
J Am Acad Audiol ; 21(6): 409-17, 2010 Jun.
Article in English | MEDLINE | ID: mdl-20701838

ABSTRACT

BACKGROUND AND PURPOSE: To report on the incidence and relative risk of tinnitus onset from a variety of drug therapies known to be ototoxic. Two main questions were asked: (1) What is the prevalence and incidence of tinnitus among patients treated with cisplatin, carboplatin, or ototoxic antibiotic therapies? (2) Do commonly reported treatment or subject factors confound or modify the incidence of tinnitus onset? DATA COLLECTION AND ANALYSIS: A prospective observational study design was used to evaluate occurrence of significant otologic changes in 488 veterans (962 ears) receiving chemotherapeutic agents (cisplatin, carboplatin), ototoxic antibiotics (primarily aminoglycoside), or nonototoxic drugs (control medications). A subset of 260 veterans lacking tinnitus prior to drug exposure was used to compare rates of tinnitus onset. Subjects were tested prior to, during, and following their treatment. Planned comparisons using logistic regression, analysis of variance (ANOVA), and chi(2) statistics were made among groups by the type of medication taken, age, presence of preexisting hearing loss, days on drug, and cumulative dose of drug. RESULTS: Baseline tinnitus rates were high (nearly 47%) relative to the general population of a similar age. Subjects with exposure to ototoxic medications had significantly increased risk for developing tinnitus. Those on chemotherapeutic agents were found to have the greatest risk. Cisplatin elevated the risk by 5.53 times while carboplatin increased the risk by 3.75 over nonototoxic control medications. Ototoxic antibiotics resulted in borderline risk (2.81) for new tinnitus. Contrary to other reports, we did not find that subject factors (increased age or pre-existing hearing loss) or treatment factors (days on drug or cumulative dose) contributed to rates of tinnitus onset during treatment. CONCLUSIONS: This large prospective study confirms that new tinnitus during treatment is associated with chemotherapy and with certain ototoxic antibiotic treatment. Cisplatin and carboplatin were found to be the most potent ototoxic agents causing tinnitus at much greater numbers than the other drugs studied. Implications for counseling and audiological resource allocation are discussed.


Subject(s)
Aminoglycosides/toxicity , Anti-Bacterial Agents/toxicity , Antineoplastic Agents/toxicity , Carboplatin/toxicity , Cisplatin/toxicity , Tinnitus/chemically induced , Veterans/statistics & numerical data , Adult , Aged , Amikacin/toxicity , Bacterial Infections/drug therapy , Cross-Sectional Studies , Female , Gentamicins/toxicity , Hearing Tests , Humans , Incidence , Male , Middle Aged , Neoplasms/drug therapy , Prospective Studies , Risk , Time Factors , Tinnitus/epidemiology , Tobramycin/toxicity , Vancomycin/toxicity
10.
Ear Hear ; 29(6): 875-93, 2008 Dec.
Article in English | MEDLINE | ID: mdl-18753950

ABSTRACT

OBJECTIVES: (1) To determine the ototoxicity detection rate (sensitivity) for distortion-product otoacoustic emissions (DPOAEs) testing in adults who received ototoxic medications and experienced pure-tone threshold changes during the course of treatment; (2) to determine the extent to which DPOAE sensitivity to ototoxicity depends on the type of drug administered (platinum or antibiotic), magnitude of ototoxic threshold shifts, pre-exposure pure-tone threshold, and DPOAE data; and (3) to build a model to predict DPOAE sensitivity. DESIGN: DPOAE and audiometric data were obtained as part of a prospective Veterans Affairs study investigating methods of ototoxicity monitoring. Data were analyzed from 90 ears of 53 subjects receiving ototoxic medications and showing significant hearing changes in at least one ear. Pure-tone threshold data were obtained at frequencies from 0.5 to 20 kHz, using 1/6-octave precision near the upper frequency limit of hearing. DPOAE data are reported for f2's from 0.8 to 8.0 kHz in 1/6-octave increments using primary levels (L1/L2) of 65/59 dB SPL and a primary frequency ratio (f2/f1) of 1.2. Test results were evaluated at various times during drug treatment to determine whether DPOAE level changes were associated with behavioral hearing changes. Univariate and multivariate analysis techniques were used to determine factors that affected DPOAE sensitivity to ototoxic damage. RESULTS: Of the 90 ears examined, 82 (91%) had DPOAEs that could be monitored for changes. Sixty-four of these 82 ears (78%) had DPOAEs that were reduced or absent following drug treatment. DPOAE sensitivity to ototoxicity was unrelated to the type of ototoxic drug administered. Rather, DPOAE sensitivity depended on the magnitude of postexposure hearing changes and on variables related to pre-exposure audiogram and DPOAE measurements. Behavioral hearing changes not detected by DPOAEs were small on average (<7 dB). DPOAE sensitivity was reduced in ears with poorer pre-exposure hearing, and in ears with measurable DPOAE frequencies limited to f2's below 2.5 kHz or more than one octave from the frequency region where hearing change occurred. Results of logistic regression modeling showed that DPOAEs present at f2's greater than 2.5 kHz were associated with the eventual success of ototoxicity monitoring with DPOAEs. However, independent variables examined could not explain differences in the relative timing of behavioral and DPOAE changes. A roughly equivalent proportion of ears experienced DPOAE changes before, during, or after behavioral hearing changes. CONCLUSIONS: DPOAEs are a useful screening tool for ototoxicity in adults with pre-exposure hearing loss, but are less sensitive compared with a behavioral test method that targets thresholds near the upper limit of a subject's audible frequency range. Ears successfully monitored for ototoxicity with DPOAEs are those with better pre-exposure hearing, greater postexposure hearing changes, and baseline DPOAEs near the highest behavioral test frequencies and present at high f2's. Results suggest that successful monitoring of ototoxicity with DPOAEs may be predicted clinically by assessing the measurable DPOAE f2 frequency range and its relation to the highest behavioral test frequencies.


Subject(s)
Antineoplastic Agents/toxicity , Cisplatin/toxicity , Drug Monitoring/methods , Hearing Loss/chemically induced , Hearing Loss/diagnosis , Otoacoustic Emissions, Spontaneous/drug effects , Aged , Aged, 80 and over , Aminoglycosides/toxicity , Audiometry, Pure-Tone , Auditory Threshold/drug effects , Carboplatin/toxicity , Female , Humans , Male , Middle Aged , Prospective Studies , Sensitivity and Specificity
11.
Am J Audiol ; 25(2): 153-60, 2016 Jun 01.
Article in English | MEDLINE | ID: mdl-27315442

ABSTRACT

PURPOSE: In the Noise Outcomes in Servicemembers Epidemiology Study, Veterans recently separated from the military undergo comprehensive assessments to initiate long-term monitoring of their auditory function. We developed the Tinnitus Screener, a four-item algorithmic instrument that determines whether tinnitus is present and, if so, whether it is constant or intermittent, or whether only temporary tinnitus has been experienced. Predictive validity data are presented for the first 100 Noise Outcomes in Servicemembers Epidemiology Study participants. METHOD: The Tinnitus Screener was administered to participants by telephone. In lieu of a gold standard for determining tinnitus presence, the predictive validity of the tinnitus category assigned to participants on the basis of the Screener results was assessed when the participants attended audiologic testing. RESULTS: Of the 100 participants, 67 screened positive for intermittent or constant tinnitus. Three were categorized as "temporary" tinnitus only, and 30 were categorized as "no tinnitus." Tinnitus categorization was predictively valid with 96 of the 100 participants. CONCLUSIONS: These results provide preliminary evidence that the Screener may be suitable for quickly determining essential parameters of reported tinnitus. We have since revised the instrument to differentiate acute from chronic tinnitus and to identify occasional tinnitus. We are also obtaining measures that will enable assessment of its test-retest reliability.


Subject(s)
Algorithms , Tinnitus/diagnosis , Adult , Epidemiologic Studies , Female , Humans , Male , Mass Screening , Middle Aged , Reproducibility of Results , Surveys and Questionnaires , Tinnitus/epidemiology , United States/epidemiology , Veterans/statistics & numerical data , Young Adult
12.
J Rehabil Res Dev ; 42(3): 353-61, 2005.
Article in English | MEDLINE | ID: mdl-16187247

ABSTRACT

Ototoxic hearing loss is usually detected earliest through monitoring of the highest audible frequencies in individuals administered ototoxic medications. Conducting ototoxicity monitoring may require testing patients in the hospital room. This study evaluated the use of insert earphones for obtaining reliable threshold responses at bedside. Twenty adult subjects were tested during two different sessions in the sound booth and on the ward. Thresholds were obtained for frequencies from 5 to 16 kHz and at 2 kHz with the use of the KOSS Pro/4X Plus earphones and Etymotic ER-4B MicroPro insert earphones. Results indicate that ER-4B insert earphones are as reliable as KOSS earphones for testing on the ward for high-frequency ototoxicity monitoring.


Subject(s)
Audiometry/instrumentation , Hearing Loss/diagnosis , Point-of-Care Systems , Acoustic Stimulation , Adult , Auditory Threshold , Equipment Design , Hearing Loss/chemically induced , Humans , Middle Aged , Reproducibility of Results , Sensitivity and Specificity
13.
J Am Acad Audiol ; 14(8): 444-50, 2003 Oct.
Article in English | MEDLINE | ID: mdl-14655957

ABSTRACT

The National Center for Rehabilitative Auditory Research has developed a protocol to provide early identification of ototoxicity for patients receiving ototoxic medications. The initial work involved patients with relatively good high-frequency hearing and resulted in the use of an individualized, sensitive frequency range separated by 1/6th-octave intervals. This protocol tested pure-tone frequencies at 1/6th-octave steps above 9 kHz, but only conventional audiometric frequencies were tested below 9 kHz. More recently, the testing protocol was expanded to include 1/6th-octave testing below 9 kHz. The primary question of interest was to determine whether adding 1/6th-octave test frequencies below 9 kHz would increase the ototoxicity detection rate for patients with poorer hearing. Results indicated 76 of the 210 (36.2%) ears that demonstrated initial ototoxic hearing change would have been missed or detected later if only conventional frequency testing was conducted.Therefore, for individuals with poorer hearing, expanding the use of the 1/6th-octave test protocol provides earlier identification of ototoxicity.


Subject(s)
Anti-Bacterial Agents/adverse effects , Antineoplastic Agents/adverse effects , Auditory Threshold/drug effects , Hearing Loss, Sensorineural/chemically induced , Hearing Loss, Sensorineural/diagnosis , Adult , Aged , Aged, 80 and over , Audiometry, Pure-Tone/methods , Female , Follow-Up Studies , Humans , Male , Middle Aged
14.
Int Emerg Nurs ; 18(4): 196-202, 2010 Oct.
Article in English | MEDLINE | ID: mdl-20869660

ABSTRACT

STUDY AIM: This research aims to explore patient satisfaction with ED physiotherapy within the Australian context by providing a qualitative perspective with in-depth exploration of the factors underlying patients' satisfaction. The physiotherapist was part of the Emergency Department Allied Health Team of social worker and occupational therapist. METHODS: A qualitative, interpretive, field-based study using face-to-face interviews were carried out post-physiotherapy treatment within the emergency department, followed-up 2-3 weeks later with telephone interviews. RESULTS: Twenty two participants took part in the face-to-face interviews and 15 in the follow-up interviews. Of the 22 participants who took part in the initial interviews 19 were over 65 years of age, with a mean age of 78 years. Within the category 'Physiotherapy in the emergency department' the themes were; expectations, bedside manner, physiotherapy management (i.e. assessment, advice, hands-on, exercise, follow-up/referral) and satisfaction. The physiotherapist at the Australian emergency department appeared to make an impact on patients' experiences in the emergency department through his thorough subjective assessment of the patients' home environment, coping skills and social supports, his assessment of functional mobility, his provision of exercises, advice and hands-on treatment, as well as his involvement in organising follow-up or referral to other services. The physiotherapist's bedside manner shaped patients' perceptions throughout their assessment and treatment, reassuring and comforting patients within the emergency environment. CONCLUSION: Participants were satisfied with the experience of attending the physiotherapist in the emergency department and commented the blend of skills of the physiotherapists enhanced the service provision and self reported patient outcomes.


Subject(s)
Emergency Service, Hospital , Patient Satisfaction/statistics & numerical data , Physical Therapy Modalities , Adult , Aged , Aged, 80 and over , Clinical Competence , Emergency Service, Hospital/organization & administration , Female , Follow-Up Studies , Humans , Male , Middle Aged , Nursing Methodology Research , Patient Care Team/organization & administration , Patient Discharge , Physical Therapy Modalities/organization & administration , Physical Therapy Modalities/psychology , Professional Role/psychology , Professional-Patient Relations , Qualitative Research , Surveys and Questionnaires , Victoria
15.
Int Emerg Nurs ; 18(2): 80-8, 2010 Apr.
Article in English | MEDLINE | ID: mdl-20382369

ABSTRACT

The aim of this study was to systematically review qualitative literature published between 1990 and 2006 exploring the patient experience within the emergency department (ED) with the intent of describing what factors influence the patient experience. Twelve articles were retrieved following combination of key words using five databases. The overarching categories developed from this integration of literature were; emotional impact of emergency, staff-patient interactions, waiting, family in the emergency department, and emergency environment. The patient experience issue given most emphasis by the articles under review was the caring or lack of caring regarding the patients' psychosocial and emotional needs. This was in contrast to the culture of the ED which emphasised "medical-technical" skill and efficiency. Satisfaction studies need to understand many factors and influences, qualitative methodologies have the ability to do so.


Subject(s)
Attitude to Health , Emergency Nursing/organization & administration , Emergency Service, Hospital/organization & administration , Emergency Treatment/psychology , Nursing Methodology Research/organization & administration , Qualitative Research , Clinical Competence , Communication , Efficiency, Organizational , Empathy , Family , Health Facility Environment , Humans , Organizational Culture , Professional-Patient Relations , Quality of Health Care , Research Design
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