Studyguide PRAXIS audiology ST Questions and Answers

Studyguide PRAXIS audiology ST Questions and Answers what is the CPT code for comprehensive (air, bone, speech) - Correct Answer ️️ - 92557 What does sensitivity measure? Specificity? - Correct Answer ️️ -Sensitivity measures the probability of actual positives specificity measures the probability of actual negatives. What is the formula for sensitivity? - Correct Answer ️️ -Sensitivity= TP/(TP+FN) What is the formula for specificity? - Correct Answer ️️ -Specificity = TN/(TN+FP) What is the formula for positive predictive value? - Correct Answer ️️ -PPV = TP/ (TP+FP) What is the formula for negative predictive value? - Correct Answer ️️ -NPV = TN/(FN+TN) What does ASSR use instead of latency and amplitude? - Correct Answer ️️ - amplitudes and phases What types of stimuli to measure ASSR - Correct Answer ️️ -ASSR is evoked using repeated sound stimuli presented at a high repetition rate What methods does ASSR use to detect and define hearing thresholds? - Correct Answer ️️ -ASSR uses an objective, statistics-based mathematical detection algorithm to detect and define hearing thresholds. What are the pros of using ASSR when compared to ABR? - Correct Answer ️️ -ASSR can be used binaurally, while evaluating broad bands or four frequencies (500 Hz, 1,000 Hz, 2,000 Hz, and 4,000 Hz) simultaneously. It can estimate and differentiate hearing within the severe-to-profound hearing loss ranges. What is the most sensitive measure of CN VIII dysfunction? - Correct Answer ️️ -ABR Where is ABR measure derived from (big picture) - Correct Answer ️️ -ABRs are peripheral measures of neural function/ periphery recordings between the cochlea and the inferior colliculus. Where is wave I from (ABR) - Correct Answer ️️ -Distal (peripheral portion) of the cochlear nerve Where is wave II from (ABR) - Correct Answer ️️ -Proximal (more central) part of the cochlear nerve Where is wave III from (ABR) - Correct Answer ️️ -cochlear nucleus Where is wave IV from (ABR) - Correct Answer ️️ -SOC Where is wave V from (ABR) - Correct Answer ️️ -Nuclei of the lateral lemniscus Where is wave VI from (ABR) - Correct Answer ️️ -inferior colliculus What is the optimal stim rate for ABR? - Correct Answer ️️ -11-21 In ABR, increasing the rate will do what to the amplitude and latencies? - Correct Answer ️️ -Increasing the stimulus rate will decrease amplitude, increase absolute latencies, and prolong I-V wave interpeak latencies In ABR, decreasing the rate will do what? - Correct Answer ️️ -decreasing rate decreases latency and improves morphology. What is a typical ABR filter for adults? Children? - Correct Answer ️️ -decreasing rate decreases latency and improves morphology. <50 are preferred. Nystagmus seen in post canal BPPV - Correct Answer ️️ -upbeat torsional towards the affected ear Nystagmus seen in anterior canal BPPV - Correct Answer ️️ -anterior canal nystagmus: downbeat torsional toward the affected ear what does cVEMP test? - Correct Answer ️️ -cVEMP: tests the function of the saccule and inferior branch of the 8th nerve what does oVEMP test? - Correct Answer ️️ -oVEMP: tests the function of the utricle and superior branch of the 8th nerve What are the most common pediatric vestibular disorders? - Correct Answer ️️ -Most common disorders reported to cause dizziness in children are otitis media, migraine headache, benign paroxysmal vertigo of childhood (BPVC), trauma, and vestibular neuritis. DPOAE performs best at what frequenci