Olsson R, Nilsson H, Ekberg O
Department of Diagnostic Radiology, Malmö General Hospital, Sweden.
Invest Radiol. 1994 Jun;29(6):630-5. doi: 10.1097/00004424-199406000-00006.
Elevated intrabolus pressure above a pharyngeal narrowing has been postulated as an important finding in patients with cricopharyngeal bars. To elucidate the significance of intrabolus pressure around lumen narrowings in the pharynx, intraluminal pressure characteristics were evaluated in a laboratory model simulating upper esophageal sphincter narrowing.
Intraluminal solid-state manometry was performed in an experimental model in which variable narrowing was created in an expandable balloon simulating the pharyngeal walls.
Intrabolus pressure was dependent on the position of the manometric sensor, degree of lumen narrowing, bolus volume, flow rate, and fluid viscosity.
Elevated intrabolus pressure is an important finding. Intrabolus pressure is dependent on many parameters, and hence, is difficult to evaluate. If results found with this model hold true in patients, manometric sensor positioning is crucial, and concurrent fluoroscopy is highly recommended to achieve a standardized manometric technique in pharyngeal manometry.
咽缩窄上方的团注内压力升高被认为是环咽肌条患者的一项重要发现。为阐明咽腔狭窄处团注内压力的意义，在模拟食管上括约肌狭窄的实验室模型中评估了腔内压力特征。
在一个实验模型中进行腔内固态测压，该模型通过在模拟咽壁的可扩张球囊内制造可变狭窄。
团注内压力取决于测压传感器的位置、管腔狭窄程度、团注体积、流速和流体粘度。
团注内压力升高是一项重要发现。团注内压力取决于多个参数，因此难以评估。如果该模型得到的结果在患者中成立，测压传感器的定位至关重要，强烈建议同时进行荧光透视检查以在咽测压中实现标准化测压技术。
