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Full-Text Articles in Medicine and Health Sciences
Inspiratory Muscle Recruitment During Swallow And A Comparison Across Airway Behaviors., Allison V. English
Inspiratory Muscle Recruitment During Swallow And A Comparison Across Airway Behaviors., Allison V. English
Electronic Theses and Dissertations
During swallow, a negative esophageal pressure is present that, along positive pressure from the tongue, which works to move the bolus through the pharynx into the esophagus. This negative esophageal pressure is thought to be produced via recruitment of chest wall inspiratory muscles (diaphragm and parasternal). This current study aimed to examine respiratory muscle recruitment across behaviors which have known inspiratory muscle activity (eupnea, augmented breath and cough) and compare to swallow. It was hypothesized that there would be no significant difference in amplitude and muscle recruitment over 75 ms between swallow and eupnea, but cough and augmented breath would …
A New Surgical Approach For O-C2 Fusion, Solving The Problem Of Dysphagia., M. Kathryn Mcclure
A New Surgical Approach For O-C2 Fusion, Solving The Problem Of Dysphagia., M. Kathryn Mcclure
Electronic Theses and Dissertations
The fusion of the second cervical vertebrae to the occipital bone (O-C2 fusion) for head stabilization can result in postoperative dysphagia and dyspnea, negatively impacting the patient’s quality of life. Currently, the O-C2 angle is used for head placement, which may not place the head neutrally. We hypothesize that aligning the external auditory meatus with midline of the C2 will reduce oropharyngeal stenosis, reducing dysphagia. One male patient with poor swallow quality of life who required a revision of a previous O-C2 surgery was evaluated via videofluoroscopy and completed the standard swallow quality of life questionnaire (SWAL-QOL) before and after …
Swallow And Breathing Coordination Following Suprahyoid Muscle Injury., Bradley Kimbel
Swallow And Breathing Coordination Following Suprahyoid Muscle Injury., Bradley Kimbel
Electronic Theses and Dissertations
Swallowing motility disorders (dysphagia) are a major complication following radiation treatment for head and neck cancer, affecting ~50% of those treated. One reason for this is that radiation causes muscle damage, provoking sensorimotor pathologies. Previous work has suggested that injury may cause discoordination between breathing and swallowing behaviors. We sought to determine if muscle injury provokes changes in this behavior. We hypothesized that acute suprahyoid muscle damage would alter cross-behavior excitability, causing destabilization of the respiratory-swallow pattern. Swallowing was evoked in anesthetized spontaneously breathing cats via injection of a 3cc bolus of water into the oropharyngeal cavity. A suprahyoid injury …