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Karaho T, Nakajima J, Satoh T, Kawahara K, Nakayama T, Kohno N. Mano-videoendoscopic assessment in the evaluation of the pharyngeal contraction and upper esophageal sphincter function in dysphagic patients. Auris Nasus Larynx 2017; 44:79-85. [DOI: 10.1016/j.anl.2016.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 08/10/2016] [Accepted: 08/13/2016] [Indexed: 10/21/2022]
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Lottrup C, Gregersen H, Liao D, Fynne L, Frøkjær JB, Krogh K, Regan J, Kunwald P, McMahon BP. Functional lumen imaging of the gastrointestinal tract. J Gastroenterol 2015; 50:1005-16. [PMID: 25980822 DOI: 10.1007/s00535-015-1087-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 04/28/2015] [Indexed: 02/04/2023]
Abstract
This nonsystematic review aims to describe recent developments in the use of functional lumen imaging in the gastrointestinal tract stimulated by the introduction of the functional lumen imaging probe. When ingested food in liquid and solid form is transported along the gastrointestinal tract, sphincters provide an important role in the flow and control of these contents. Inadequate function of sphincters is the basis of many gastrointestinal diseases. Despite this, traditional methods of sphincter diagnosis and measurement such as fluoroscopy, manometry, and the barostat are limited in what they can tell us. It has long been thought that measurement of sphincter function through resistance to distension is a better approach, now more commonly known as distensibility testing. The functional lumen imaging probe is the first medical measurement device that purports in a practical way to provide geometric profiling and measurement of distensibility in sphincters. With use of impedance planimetry, an axial series of cross-sectional areas and pressure in a catheter-mounted allantoid bag are used for the calculation of distensibility parameters. The technique has been trialed in many valvular areas of the gastrointestinal tract, including the upper esophageal sphincter, the esophagogastric junction, and the anorectal region. It has shown potential in the biomechanical assessment of sphincter function and characterization of swallowing disorders, gastroesophageal reflux disease, eosinophilic esophagitis, achalasia, and fecal incontinence. From this early work, the functional lumen imaging technique has the potential to contribute to a better and more physiological understanding of narrowing regions in the gastrointestinal tract in general and sphincters in particular.
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Affiliation(s)
- Christian Lottrup
- Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark.
| | - Hans Gregersen
- GIOME and the Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, 83 Shabei Lu, 400044, Chongqing, China.
| | - Donghua Liao
- GIOME Academia, Department of Medicine, Aarhus University, Aarhus, Denmark
| | - Lotte Fynne
- Neurogastroenterology Unit, Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Jens Brøndum Frøkjær
- Mech-Sense, Department of Radiology, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Klaus Krogh
- Neurogastroenterology Unit, Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark
| | - Julie Regan
- Trinity Academic Gastroenterology Group, Tallaght Hospital, Dublin, Ireland
| | - Peter Kunwald
- Mech-Sense, Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Barry P McMahon
- GIOME and the Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, 83 Shabei Lu, 400044, Chongqing, China.,Trinity Academic Gastroenterology Group, Tallaght Hospital, Dublin, Ireland
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