Enhancing Post-Stroke Dysphagia Rehabilitation

Hamad Medical Corporation10 enrolled

Overview

The goal of this clinical trial is to investigate the effects of a combined swallowing intervention (Neuromuscular Electrical Stimulation (NMES) + Neuromuscular Taping (NMT) + swallowing exercises) on swallowing function and quality of life in post-stroke dysphagia patients. The main questions it aims to answer are: • Does the combination of swallowing exercises, NMES \& NMT have a greater improvement in dysphagia rehabilitation when compared to either NMES or NMT alone? Researchers will compare the effects of intervention between the three groups (NMES and swallowing exercises, NMT and swallowing exercises, and NMES with NMT and swallowing exercises). Participants will: * Receive a combined dysphagia rehabilitation comprised of swallowing exercises, Neuromuscular Electrical stimulation, and/or Neuromuscular Taping. * Visit the clinic once every 5 days a week for 10 therapy sessions. * Undergo baseline and post-intervention evaluation procedures.

This proposed study will be conducted using a prospective, three-group, randomized controlled trial. The participants for this study will be recruited from the post-acute and rehabilitation units who are diagnosed with post-stroke dysphagia at Hamad Medical Corporation hospitals in the State of Qatar.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

Dysphagia After Stroke

Interventions

Neuromuscular Electrical StimulationPROCEDURE

NMES is a modality for stimulating muscles through electrical pulses, is used widely in the rehabilitation of stroke patients with pharyngeal dysphagia. It reinforces the strength of the muscles for swallowing and smooths the swallowing reflex through sensory stimulation. Clinically, NMES is applied to depolarize nerve fibers at the point of engagement, involving muscle contraction (Park et al. 2019). NMES includes the placement of electrical stimuli to the skin around the face and neck through surface electrodes. Stimulation intensity can be diverse depending on the treatment objectives. Low-intensity (sensory) NMES lets patients feel the tingling sensation on the skin, whereas high-intensity (motor) NMES can stimulate muscle contractions (Cheng et al. 2022).

Neuromuscular TapingPROCEDURE

NMT is similar to kinesiology taping but specifically focuses on neuromuscular re-education and it is a commonly used therapy approach for various neuromuscular problems. The neuromuscular tape can be easily applied to skeletal muscles to induce or inhibit muscle activity and to support the stabilization of structures such as joints and ligaments. The elasticity and adhesion properties of NMT can be used to restrain the anterior-upward movement of the hyolaryngeal complex during spontaneous swallowing. This effect increases the load on the suprahyoid muscles and consequently, the patient spends more effort to overcome this movement while swallowing. Resistance exercises provided with NMT activate the suprahyoid muscle and contractions for the muscles of the tongue.

Swallowing exercise (Expiratory Muscle Strength Training)PROCEDURE

IN EMST the patients blow into a one-way spring-loaded apparatus calibrated to a percentage of maximum expiratory pressure until the valve opens with adequate effort. Four to eight weeks of EMST exercises increased the maximum expiratory pressure (MEP), maximum hyoid displacement, suprahyoid muscle action, and swallowing safety in patients with amyotrophic lateral sclerosis, stroke, and neck cancer.

Swallowing exercise (Chin Tuck Against Resistance)PROCEDURE

CTAR exercise is performed by an inflatable 12 cm rubber ball. The patients are directed to sit upright on a chair and hold the rubber ball between the base of the chin and the manubrium sterna. This exercise is composed of isometric and isotonic movements. The isometric movement will be performed for 10 seconds, whereas the isokinetic movement will be successively repeated 10 times to strengthen the suprahyoid and infrahyoid muscles (Kagaya \& Inamoto, 2022).

Eligibility

Sex: ALLMin age: 18 YearsMax age: 75 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Patients aged 18 - 75 years old, * Diagnosed with swallowing disorders between one day and six months post-stroke, * Able to attend 10 therapy sessions, * Have never received any swallowing treatment before participating in this study. Exclusion Criteria: * Post-stroke patients with severe cognitive impairment, * Patients who have swallowing disorders due to other etiologies, * Patients who need traditional swallowing therapy other than Expiratory Muscle Strength Training (EMST) and Chin Tuck Against Resistance (CTAR). - Skin disorders in the submental area and anterior neck, * Medical conditions that may affect participation, * A defibrillator and use precision electrical biomedical devices (e.g. pacemaker, etc.).

Outcomes

Primary Outcomes

Penetration-Aspiration Scale (PAS) score

It is an 8-point ordinal scale, with 1 representing the least and 8 representing the highest or most severe score. PAS scores are multidimensional, i.e., include several observations within each score: (1) depth of airway invasion (material above, contacting, or below the level of vocal folds; (2) whether or not there is material remaining after the swallow (ejected, not ejected); and (3) the patient's response to material present in the airway (effort to clear the material)