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  1. Article ; Online: Oesophageal high-resolution manometry: moving from research into clinical practice.

    Fox, M R / Bredenoord, A J

    Gut

    2008  Volume 57, Issue 3, Page(s) 405–423

    Abstract: ... pressure channel to the development of high-resolution manometry (HRM) with up to 36 pressure sensors ... Manometry measures pressure within the oesophageal lumen and sphincters, and provides an assessment ... of the technique. This review examines the current evidence that supports the move of HRM from the research setting ...

    Abstract Manometry measures pressure within the oesophageal lumen and sphincters, and provides an assessment of the neuromuscular activity that dictates function in health and disease. It is performed to investigate the cause of functional dysphagia, unexplained "non-cardiac" chest pain, and in the pre-operative work-up of patients referred for anti-reflux surgery. Manometric techniques have improved in a step-wise fashion from a single pressure channel to the development of high-resolution manometry (HRM) with up to 36 pressure sensors. At the same time, advances in computer processing allow pressure data to be presented in real time as a compact, visually intuitive "spatiotemporal plot" of oesophageal pressure activity. HRM recordings reveal the complex functional anatomy of the oesophagus and its sphincters. Spatiotemporal plots provide objective measurements of the forces that move food and fluid from the pharynx to the stomach and determine the risk of reflux events. The introduction of commercially available HRM has been followed by rapid uptake of the technique. This review examines the current evidence that supports the move of HRM from the research setting into clinical practice. It is assessed whether a detailed description of pressure activity identifies clinically relevant oesophageal dysfunction that is missed by conventional investigation, increasing diagnostic yield and accuracy. The need for a new classification system for oesophageal motor activity based on HRM recordings is discussed. Looking ahead the potential of this technology to guide more effective medical and surgical treatment of oesophageal disease is considered because, ultimately, it is this that will define the success of HRM in clinical practice.
    MeSH term(s) Chest Pain/etiology ; Deglutition Disorders/etiology ; Esophageal Diseases/diagnosis ; Esophageal Motility Disorders/classification ; Esophageal Motility Disorders/diagnosis ; Esophagogastric Junction/physiopathology ; Esophagus/physiopathology ; Humans ; Manometry/methods ; Peristalsis
    Language English
    Publishing date 2008-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 80128-8
    ISSN 1468-3288 ; 0017-5749
    ISSN (online) 1468-3288
    ISSN 0017-5749
    DOI 10.1136/gut.2007.127993
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Utility of non-endoscopic investigations in the practical management of oesophageal disorders.

    Sifrim, Daniel / Blondeau, Kathleen / Mantillla, Lidia

    Best practice & research. Clinical gastroenterology

    2009  Volume 23, Issue 3, Page(s) 369–386

    Abstract: ... associated with GORD symptoms as well as chest pain and dysphagia. High-resolution manometry contributed ... of oesophageal anatomy and combined oesophageal manometry-impedance can assess oesophageal motility and bolus ... transit simultaneously in a non-radiological way. Still in experimental phase, high-frequency ultrasound ...

    Abstract The current available methods for diagnosis of GORD are symptom questionnaires, catheter and wireless pH-metry, impedance-pH monitoring and Bilitec(@). Osophageal pH monitoring allows both quantitative analysis of acid reflux and assessment of reflux-symptom association. Impedance-pH monitoring detects all types of reflux (acid and non-acid) and allows assessment of proximal extent of reflux, a relevant parameter for understanding symptoms perception and extraoesophageal symptoms. Bilitec provides a quantitative assessment of duodeno-gastro-oesophageal reflux. Oesophageal motor abnormalities have been associated with GORD symptoms as well as chest pain and dysphagia. High-resolution manometry contributed to re-classify oesphageal motor disorders. However, barium swallows are still essential for evaluation of oesophageal anatomy and combined oesophageal manometry-impedance can assess oesophageal motility and bolus transit simultaneously in a non-radiological way. Still in experimental phase, high-frequency ultrasound allows monitoring of the oesophageal wall thickness and exaggerated longitudinal muscle contraction that might be associated to chest pain and dysphagia. This chapter provides a critical evaluation of the clinical application of these techniques.
    MeSH term(s) Esophageal Achalasia/diagnosis ; Esophageal Diseases/complications ; Esophageal Diseases/diagnosis ; Esophageal Stenosis/complications ; Gastroesophageal Reflux/diagnosis ; Gastroesophageal Reflux/epidemiology ; Humans ; Manometry ; Monitoring, Ambulatory ; Peristalsis/physiology ; Risk Factors ; Scleroderma, Systemic/complications
    Language English
    Publishing date 2009
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2048181-0
    ISSN 1532-1916 ; 1521-6918
    ISSN (online) 1532-1916
    ISSN 1521-6918
    DOI 10.1016/j.bpg.2009.03.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Approaches to driving the evolving understanding of lower oesophageal sphincter mechanical function.

    Dent, John

    Journal of smooth muscle research = Nihon Heikatsukin Gakkai kikanshi

    2007  Volume 43, Issue 1, Page(s) 1–14

    Abstract: ... and research manometric studies use methods for LOS manometry that are invalidated by LOS movement ... to be better reflected in the methods used for routine clinical practice and research. ... resolution manometry (HRM), which uses multiple point pressure sensors spaced at 1 cm interval or less, and ...

    Abstract This article reviews and places into context the development of lower oesophageal sphincter (LOS) manometry, the key technique for researching the mechanics of this region. The first of two major challenges, being able to record sphincter pressure accurately with generally available equipment, was solved by the advent of perfused manometry in the 1960s. The other main challenge was to achieve reliable, continuous recording of LOS pressure, despite the constant movements of the LOS relative to the manometric catheter. Though well documented, this challenge is still poorly understood and prioritised, as many clinical/diagnostic and research manometric studies use methods for LOS manometry that are invalidated by LOS movement. There are two techniques that can record continuously from the LOS, despite its movements: high resolution manometry (HRM), which uses multiple point pressure sensors spaced at 1 cm interval or less, and the sleeve, which is a single long sensor. HRM provides valuable additional information on the varied topography of pressure patterns across the gastro-oesophageal junction and how this can change in an individual, second to second. HRM especially, but also sleeve manometry continue to advance understanding of the mechanics of gastro-oesophageal reflux, to unravel the mysteries of the mechanics of hiatus hernia and the diaphragmatic hiatus, to define why antireflux surgery fails or causes dysphagia, to recognise patients with dysphagia due to isolated defects of LOS relaxation and to test novel therapies for reflux disease directed at LOS function. Ample evidence now exists that accurate monitoring of LOS and gastro-oesophageal junction pressures is important for the diagnostic assessment of many patients and for advancing research into several aspects of the mechanical function of the LOS and its surrounding structures. This evidence now needs to be better reflected in the methods used for routine clinical practice and research.
    MeSH term(s) Animals ; Biomechanical Phenomena/methods ; Esophageal Sphincter, Lower/physiology ; Humans ; Manometry
    Language English
    Publishing date 2007-04-20
    Publishing country Japan
    Document type Journal Article ; Review
    ISSN 0916-8737
    ISSN 0916-8737
    DOI 10.1540/jsmr.43.1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Non-achalasic motor disorders of the oesophagus.

    Sifrim, Daniel / Fornari, Fernando

    Best practice & research. Clinical gastroenterology

    2007  Volume 21, Issue 4, Page(s) 575–593

    Abstract: ... diagnostic techniques, including high-resolution manometry, high-frequency intraluminal ultrasound and intraluminal ... diffuse oesophageal spasm, oesophageal dysmotility associated with scleroderma, and ineffective oesophageal motility ... discussed in a separate chapter. Other motor disorders with clinical relevance include ...

    Abstract Motor abnormalities of the oesophagus are characterised by a chronic impairment of the neuromuscular structures that co-ordinate oesophageal function. The best-defined entity is achalasia, which is discussed in a separate chapter. Other motor disorders with clinical relevance include diffuse oesophageal spasm, oesophageal dysmotility associated with scleroderma, and ineffective oesophageal motility. These non-achalasic motor disorders have variable prevalence but they could be associated with invalidating symptoms such as dysphagia, chest pain and gastro-oesophageal reflux disease. New oesophageal diagnostic techniques, including high-resolution manometry, high-frequency intraluminal ultrasound and intraluminal impedance, allow (1) better definition of peristalsis and sphincter function, (2) assessment of changes in oesophageal wall thickness, and (3) evaluation of pressure gradients within the oesophagus and across the sphincters that can produce normal or abnormal patterns of bolus transport. This chapter discusses recent advances in physiology, pathophysiology, diagnosis and treatment of non-achalasic oesophageal motor disorders.
    MeSH term(s) Esophageal Motility Disorders/diagnosis ; Esophageal Motility Disorders/etiology ; Esophageal Motility Disorders/therapy ; Humans
    Language English
    Publishing date 2007
    Publishing country Netherlands
    Document type Journal Article ; Review
    ZDB-ID 2048181-0
    ISSN 1521-6918
    ISSN 1521-6918
    DOI 10.1016/j.bpg.2007.03.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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