Halum Stacey L, Shemirani Nima L, Merati Albert L, Jaradeh Safwan, Toohill Robert J
Center for Voice and Swallowing Disorders, Department of Otolaryngology and Communication Sciences, Medical College of Wisconsin, 9200 W Wisconsin Ave, Milwaukee, WI 53226, USA.
Ann Otol Rhinol Laryngol. 2006 Apr;115(4):312-6. doi: 10.1177/000348940611500411.
We reviewed a large series of cricopharyngeal (CP) muscle electromyography (EMG) results and compared them with the EMG results from the inferior constrictor (IC), thyroarytenoid, (TA), cricothyroid (CT), and posterior cricoarytenoid (PCA) muscles.
We performed a retrospective review of all CP muscle EMG reports from studies performed between January 1996 and June 2003. All of the tested elements from the CP muscle EMG reports were recorded. The EMG results were recorded for the ipsilateral IC, TA, CT, and PCA muscles if they were simultaneously tested. Each muscle result was classified as normal, neurogenic inactive axonal injury (IAI), or neurogenic active axonal injury (AAI), and the muscle findings were compared. A patient chart review was performed to determine a clinical correlation.
Fifty-nine patients underwent CP muscle EMG. Eighteen patients had bilateral EMG studies, making a total of 77 CP muscle studies. Nineteen sets of CP muscle results were normal, 43 demonstrated neurogenic IAI, and 15 demonstrated neurogenic AAI. The ipsilateral IC and CP muscles had the same innervation status in 27 of 28 studies (p < .0001). When the ipsilateral TA muscle was studied simultaneously with the CP muscle, 31 of 50 studies had the same innervation status (p = .005). The ipsilateral CT and CP muscles demonstrated the same innervation status in 40 of 50 studies (p < .0001). The correlations between the CP and IC muscle findings and between the CP and CT muscle findings were both stronger than the correlation between the CP and TA muscle findings (p < .0001 and p = .024, respectively). The chart review demonstrated the clinical findings to be consistent with the EMG results.
The EMG studies demonstrated that CP muscle findings have the strongest correlation with IC muscle findings, followed by the CT and TA muscles. This outcome does not support theories indicating that the recurrent laryngeal nerve innervates the CP muscle in all cases.
我们回顾了一系列环咽肌（CP）肌电图（EMG）结果，并将其与咽下缩肌（IC）、甲杓肌（TA）、环甲肌（CT）和后环杓肌（PCA）的肌电图结果进行比较。
我们对1996年1月至2003年6月期间进行的所有CP肌肌电图报告进行了回顾性分析。记录了CP肌肌电图报告中的所有测试项目。如果同时对同侧的IC、TA、CT和PCA肌进行测试，则记录其肌电图结果。将每块肌肉的结果分为正常、神经源性失活性轴索损伤（IAI）或神经源性活性轴索损伤（AAI），并比较肌肉检查结果。对患者病历进行回顾以确定临床相关性。
59例患者接受了CP肌肌电图检查。18例患者进行了双侧肌电图检查，共进行了77次CP肌检查。19组CP肌结果正常，43组显示神经源性IAI，15组显示神经源性AAI。在28项研究中的27项中，同侧IC肌和CP肌的神经支配状态相同（p < 0.0001）。当同侧TA肌与CP肌同时进行检查时，50项研究中的31项神经支配状态相同（p = 0.005）。在50项研究中的40项中，同侧CT肌和CP肌的神经支配状态相同（p < 0.0001）。CP肌与IC肌检查结果之间以及CP肌与CT肌检查结果之间的相关性均强于CP肌与TA肌检查结果之间的相关性（分别为p < 0.0001和p = 0.024）。病历回顾显示临床检查结果与肌电图结果一致。
肌电图研究表明，CP肌检查结果与IC肌检查结果的相关性最强，其次是CT肌和TA肌。这一结果不支持在所有情况下喉返神经支配CP肌的理论。
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