The significance of accumulated oropharyngeal secretions and swallowing frequency in predicting aspiration

This study retrospectively investigated the value of both endoscopically visible oropharyngeal secretions in the hypopharynx and swallowing frequency in the prediction of aspiration of food and liquid. Fiberoptic endoscopic evaluation of swallowing (FEES) was performed on a total of 69 individuals that included hospitalized elderly, nonhospitalized elderly, and young normal subjects. A four-level rating scale for determining the severity of accumulated orpharyngeal secretions was developed and employed to rate subjects prior to the presentation of food or liquid during the FEES. Spontaneous dry swallows were also counted during the observation period of the FEES. It was found that the accumulation of endoscopically visible oropharyngeal secretions located within the laryngeal vestibule was highly predictive of aspiration of food or liquid. There were significantly fewer spontaneous swallows in hospitalized subjects when compared with nonhospitalized subjects. There was also a significant decrease in the frequency of spontaneous swallows in aspirating hospitalized subjects when compared with nonaspirating hospitalized subjects. Results are discussed in terms of integrating this information with clinical bedside examination techniques.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/41360/1/455_2004_Article_BF00417898.pd

Acoustic signature of the normal swallow: Characterization by age, gender, and bolus volume

Despite growing clinical use, cervical auscultation suffers from a lack of research-based data. One of the strongest criticisms of cervical auscultation is that there has been little research to demonstrate how dysphagic swallowing sounds are different from normal swallowing sounds, In order to answer this question, however, one first needs to document the acoustic characteristics of normal, nondysphagic swallowing sounds, This article provides the first normative database of normal swallowing sounds for the adult population. The current investigation documents the acoustic characteristics of normal swallowing sounds for individuals from 18 to more than 60 years of age over a range of thin liquid volumes. Previous research has shown the normal swallow to be a dynamic event. The normal swallow is sensitive to aging of the oropharyngeal system, and also to the volume of bolus swallowed. The current investigation found that the acoustic signals generated during swallowing were sensitive to an individual's age and to the volume of the bolus swallowed. There were also some gender-specific differences in the acoustic profile of the swallowing sound, It is anticipated that the results will provide a catalyst for further research into cervical auscultation

Speech and swallowing dysfunction in multisystem atrophy

Speech and swallowing functioning was assessed in 10 patients diagnosed as having the degenerative disease multisystem atrophy (MSA). Swallowing was assessed using clinical and radiographic examinations. The results showed that three of the 10 subjects were aspirating. The aspiration was silent and therefore not evident on clinical swallowing assessment, although there were indications of laryngeal dysfunction. The remaining subjects all had some degree of swallowing dysfunction and presented with at least a mild dysarthria. This suggests that any MSA patient presenting with even mild dysarthria should have a detailed swallowing assessment. The role of the speech therapist in the multidisciplinary management of patients with MSA is discussed

The voice and laryngeal dysfunction in stroke: A report from the Neurolaryngology Subcommittee of the American Academy of Otolaryngology-Head and Neck Surgery

Stroke is the third leading cause of death in the United States, behind heart disease and cancer. It affects as many as 5% of the population over 65 years old, and this number is growing annually due to the aging population. A significant portion of stroke patients that initially survive are faced with the risk of aspiration, as well as quality-of-life issues relating to impaired communication. The goal of this paper is to define the scope of practice in otolaryngology for these patients, and to review pertinent background literature. Consensus report and retrospective literature review. Otolaryngology involvement in these patients is critical to their rehabilitation, which often requires an interdisciplinary team of specialists. This committee presentation explores epidemiological data regarding the impact of stroke and its complications on hospitalizations. A pertinent review of neuroanatomy as it relates to laryngeal function is also discussed. State-of-the-art diagnostic and therapeutic procedures are presented. There is a well-defined set of diagnostic and therapeutic options for laryngeal dysfunction in the stroke patient. Otolaryngologists play a critical role in the interdisciplinary rehabilitation team

Prospective Quality Initiative to Maximize Dysphagia Screening Reduces Hospital-Acquired Pneumonia Prevalence in Patients With Stroke

BACKGROUND AND PURPOSE: Dysphagia can lead to pneumonia and subsequent death after acute stroke. However, no prospective study has demonstrated reduced pneumonia prevalence after implementation of a dysphagia screen. METHODS: We performed a single-center prospective interrupted time series trial of a quality initiative to improve dysphagia screening. Subjects included all patients with ischemic or hemorrhagic stroke admitted to our institution over 42 months with a 31-month (n=1686) preintervention and an 11-month (n=648) postintervention period. The intervention consisted of a dysphagia protocol with a nurse-administered bedside dysphagia screen and a reflexive rapid clinical swallow evaluation by a speech pathologist. RESULTS: The dysphagia initiative increased the percentage of patients with stroke screened from 39.3% to 74.2% (P\u3c0.001). Furthermore, this initiative coincided with a drop in hospital-acquired pneumonia from 6.5% to 2.8% among patients with stroke (P\u3c0.001). Patients admitted postinitiative had 57% lower odds of pneumonia, after controlling for multiple confounds (odds ratio=0.43; confidence interval, 0.255-0.711; P=0.0011). The best predictors of pneumonia were stroke type (P\u3c0.0001), oral intake status (P\u3c0.0001), dysphagia screening status (P=0.0037), and hospitalization before the beginning of the quality improvement initiative (P=0.0449). CONCLUSIONS: A quality improvement initiative using a nurse-administered bedside screen with rapid bedside swallow evaluation by a speech pathologist improves screening compliance and correlates with decreased prevalence of pneumonia among patients with stroke