Isolated Dysphagia Caused by Failure of Cricopharyngeal Muscle Relaxation after Left Lateral Medullary Lacunar Infarction: A case report.
- Author:
Jung Soo LEE
1
;
Yoon Tae KIM
;
Do Jun MOON
Author Information
1. Department of Rehabilitation Medicine, The Catholic University of Korea College of Medicine, Korea. moondo1010@naver.com
- Publication Type:Case Report
- Keywords:
Dysphagia;
Cricopharyngeal muscle;
Lateral medullary infarction
- MeSH:
Ataxia;
Brain Stem Infarctions;
Deglutition;
Deglutition Disorders;
Epiglottis;
Esophageal Sphincter, Upper;
Esophagus;
Hand;
Muscle Relaxation;
Muscles;
Neuromuscular Diseases;
Peristalsis;
Pharynx;
Reflex, Abnormal;
Relaxation;
Stroke;
Tongue;
Traction
- From:Journal of the Korean Academy of Rehabilitation Medicine
2009;33(2):252-254
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
Dysphagia can be caused by various mechanisms such as impaired tongue movement, delayed swallowing reflex, decreased pharyngeal peristalsis, incomplete closure of epiglottis and cricopharyngeal dysfunction. Cricopharyngeal muscle, forming the upper esophageal sphincter, acts as a muscular sling between the pharynx and the esophagus. Normally, it closes constantly at rest and opens during laryngeal elevation through active relaxation on the one hand and passive traction by the antero-cephalad laryngeal movement on the other. If its incoordination or hypertonicity happens, dysphagia can develop. Cricopharyngeal muscle dysfunction is caused by various situations such as neuromuscular diseases, postoperative changes and stroke, particularly after brainstem stroke. We report a case of isolated dysphagia caused by failure of active relaxation of cricopharyngeal muscle without aspiration after left lateral medullary lacunar infarction.
