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OBJECTIVE 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. METHODS Intraluminal solid-state manometry was performed in an experimental model in which variable narrowing was created in an expandable balloon simulating the pharyngeal walls. RESULTS Intrabolus pressure was dependent on the position of the manometric sensor, degree of lumen narrowing, bolus volume, flow rate, and fluid viscosity. CONCLUSIONS 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.
R Olsson, and
H Nilsson, and
O Ekberg
January 1977,
The Annals of otology, rhinology, and laryngology,
R Olsson, and
H Nilsson, and
O Ekberg
October 1998,
World journal of surgery,
R Olsson, and
H Nilsson, and
O Ekberg
July 2013,
Journal of neurogastroenterology and motility,
R Olsson, and
H Nilsson, and
O Ekberg
June 1991,
The American journal of physiology,
R Olsson, and
H Nilsson, and
O Ekberg
May 2001,
The American journal of gastroenterology,
R Olsson, and
H Nilsson, and
O Ekberg
September 2010,
Gastrointestinal endoscopy,
R Olsson, and
H Nilsson, and
O Ekberg
March 2016,
The Laryngoscope,
R Olsson, and
H Nilsson, and
O Ekberg
January 1995,
Hepato-gastroenterology,
R Olsson, and
H Nilsson, and
O Ekberg
June 2024,
Dysphagia,
R Olsson, and
H Nilsson, and
O Ekberg
January 1982,
Chirurgie pediatrique,
