1. The Impact of Temporal Resolution on Clinical Decision-making for Individuals with Dysphagia
- Author
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Phyllis M. Palmer, Ph. D., Aaron H. Padilla, M.S., CCC-SLP, Lori Nelson, M.S., CCC-SLP, Rick Arenas, Ph. D., Murray, Shauna Corinne, Phyllis M. Palmer, Ph. D., Aaron H. Padilla, M.S., CCC-SLP, Lori Nelson, M.S., CCC-SLP, Rick Arenas, Ph. D., and Murray, Shauna Corinne
- Subjects
- Dysphagia
- Abstract
INTRODUCTION: Dysphagia, or a disordered swallow, affects up to 1 in 25 individuals in the United States. The gold standard for assessing dysphagia is the videofluoroscopic evaluation of swallowing (VFES). This allows the clinician to observe the swallow anatomy in motion via an X-ray movie, which historically was recorded at 30 frames per second. In recent years VFES have been performed at less frames per second due to radiation concern. This project investigates the effect of using lower temporal resolutions on assessment of video-fluoroscopic swallow studies. METHODS: In this investigation, 30 swallow studies, all acquired at 30 frames per second, were obtained from a repository at Presbyterian Hospital, with 6 studies chosen per each of the five categories of the international dysphagia diet to reflect varied levels of dysphagia. These studies were altered to simulate 15 and 5 frames per second. Temporal and kinematic measures were determined for thin and pudding/puree swallows per study at each of the 3 frame rates. Temporal measures included pharyngeal transit time (PTT), pharyngeal delay time (PDT), and duration of upper esophageal sphincter opening (UESOD). Kinematic measures included extent of hyolaryngeal elevation (HLE) vi and extent of upper esophageal sphincter opening (UESOE). A panel of 3 experienced speech—language pathologists viewed each study at the three frame rates in randomized order, without being given any indication as to frame rate per study. Each panel member gave their ratings of safety, efficiency, and two treatment target recommendations. The primary investigator then used the DIGEST (Hutcheson, et al., 2017) method to translate ratings of safety and efficiency into overall swallow severity. RESULTS: Temporal and kinematic measures of PTT, PDT, and UESO, UESOD, and HLE were significantly impacted by reduced temporal resolution. Measures of safety, severity, and efficiency were not impacted by changes in fr
- Published
- 2020