Sumiko Okada

What Is the Chin-down Posture? A Questionnaire Survey of Speech Language Pathologists in Japan and the United States

The “chin-down” or “chin-tuck” maneuver is a postural technique widely used in dysphagia treatment. The posture, however, does not have a precise anatomical definition. We studied the current practice of 42 speech-language pathologists (SLPs) in Japan and the U.S. with a questionnaire survey regarding the chin-down posture. The main findings were that (1) three of five of the pictures were selected by respondents both in Japan and in the U.S. as depicting the chin-down posture; (2) 23% of Japanese and 58% of the U.S. SLPs made a distinction between chin down and chin tuck; and (3) the use of anatomical terminology by SLPs differed between the two countries. This study showed that there is poor agreement among SLPs about the meaning of the chin-down and chin-tuck postures. Developing a precise definition is important because various postures may have differing physiologic effects.

Hyoid Bone and Larynx Movements During Electrical Stimulation of Motor Points in Laryngeal Elevation Muscles: A Preliminary Study

Objectives:  This study aimed to determine the laryngeal elevation muscle motor points, evaluate the movement of hyoid bone and larynx during stimulation of the motor points, and examine the potential for treating severe dysphagia by functional electrical stimulation.

Simple Swallowing Provocation Test Has Limited Applicability as a Screening Tool for Detecting Aspiration, Silent Aspiration, or Penetration

A number of tests for evaluating dysphagia without using videofluoroscopic examination of swallowing (VF) or videoendoscopic evaluation of swallowing (VE) have been developed. The simple swallowing provocation test (SSPT) is unique because it is performed while in a supine position and does not require the patient’s cooperation. However, whether the SSPT detects aspiration or penetration correctly is unclear because its validity determined by VF or VE has not been evaluated. Therefore, we determined the sensitivity, specificity, and predictive accuracy of SSPT followed by VF in 45 patients. The sensitivities of the first-step and the second-step SSPT for the detection of aspiration, silent aspiration, or penetration were 72–75% and 13–17%, respectively; the specificities of the first-step and the second-step SSPT were 38–44% and 80–89%, respectively; and the predictive accuracies of the first-step and the second-step SSPT were 58–67% and 31–49%, respectively. These data suggest that SSPT has limited applicability as a screening tool for aspiration, silent aspiration, or penetration because of its low sensitivity. This test may be useful for patients who cannot undergo other tests due to cognitive and/or linguistic dysfunction.

Dysphagia Rehabilitation in Japan

This article describes the features of Japanese dysphagia rehabilitation, particularly where it differs from that in the United States. Many kinds of professionals participate in dysphagia rehabilitation; nurses and dental associates take important roles, and the Japanese insurance system covers that. Videofluorography and videoendoscopy are common and are sometimes done by dentists. Intermittent catheterization is applied to nutrition control in some cases. The balloon expansion method is applied to reduce pharyngeal residue after swallowing. If long-term rehabilitation does not work effectively in dysphagia due to brainstem disorder, the authors consider reconstructive surgery to improve function.

Dysphagia associated with unilateral vocal cord immobility after cardiovascular surgery.

Objective: Dysphagia associated with unilateral vocal cord immobility (UVCI) has received much less attention than did voice and phonation. The aim of this descriptive study was to evaluate the outcome of dysphagia associated with UVCI. Design: Between June 2006 and September 2009, 69 hospitalized patients who underwent cardiovascular surgery were referred for dysphagia. Video endoscopic evaluation of swallowing was used for the detection of swallowing difficulties. Severity of dysphagia was assessed using the Dysphagia Severity Scale. Results: Among the 69 patients, 31 UVCI patients who underwent video endoscopic evaluation of swallowing at least twice were used for analysis. All patients had severe to mild dysphagia at the first evaluation. Nineteen patients recovered from the UVCI at a mean follow-up of 125 days, whereas 12 had persistent UVCI at a mean follow-up of 216 days. Dysphagia Severity Scale at the first evaluation was not significantly different in both groups. At the last follow-up, the Dysphagia Severity Scale improved considerably without a significant difference in the magnitude of improvement in both groups. In the recovered and persistent UVCI groups, 16 and 7 patients, respectively, resumed their regular diets. Conclusions: Dysphagia associated with UVCI after surgery recovers, irrespective of the functional results of the UVCI.