Antroduodenal Manometry: An Evaluation of an Emerging Methodology

Byrne, Kevin G.; Quigley, Eamonn Martin

doi:10.1159/000171621

Cited by 22 publications

(21 citation statements)

References 4 publications

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“…For instance, during ADM, a catheter that has from six to eight pressure transducers mounted along its length is introduced transnasally, often over a protracted period. 27 Its routine clinical usage is therefore limited by a lack of patient tolerance in addition to the high degree of expertise needed to effectively interpret its results. In a study that aimed to determine whether solids empty from the stomach following resumption of phase-III migrating motor complexes (MMC), 15 healthy subjects underwent concurrent ADM and WMC.…”

Section: Stomachmentioning

confidence: 99%

Gastrointestinal motility revisited: The wireless motility capsule

2013

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Introduction: The wireless motility capsule (WMC) is a novel ambulatory technology that concurrently measures intraluminal pH, temperature, and pressure as it traverses the gastrointestinal tract. Objectives: We aim to provide a concise summary of the WMC, detailing the procedure for its administration and the parameters it records. We also review the evidence that has validated the WMC against other methods currently regarded as 'gold standard'. Conclusions: The WMC offers a number of advantages over and above current techniques, especially with respect to patient tolerability, safety, and standardization. The WMC represents a considerable enhancement of the researchers' and clinicians' investigatory armamentarium. If this technology becomes widely adopted, coupled with international consensus upon the interpretation of physiological data derived therein, it may herald a new and exciting era in gastrointestinal physiology.

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Section: Stomachmentioning

confidence: 99%

Gastrointestinal motility revisited: The wireless motility capsule

2013

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“…Normally, the total recording time for stationary manometry is at least 6 hours; 4 hours for fasting period followed by standard meal ingestion and next 2 hours for studying post-prandial period 22. However, the longer ambulatory monitoring is possible when using solid state catheter with mobile recording assemblies 23.…”

Section: Technique and Devicesmentioning

confidence: 99%

Technique of Functional and Motility Test: How to Perform Antroduodenal Manometry

Patcharatrakul¹,

Gonlachanvit²

2013

J Neurogastroenterol Motil

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Antroduodenal manometry is one of the methods to evaluate stomach and duodenal motility. This test is a valuable diagnostic tool for gastrointestinal motility disorders especially small intestinal pseudo-obstruction which is difficult to make definite diagnosis by clinical manifestations or radiologic findings. Manometric findings that have no evidence of mechanical obstruction and suggestive of pseudo-obstruction with neuropathy or myopathy can avoid unnecessary surgery and the treatment can be directly targeted. Moreover, among patients who have clinically suspected small intestinal pseudo-obstruction but with normal manometric findings, the alternative diagnosis including psychiatric disorder or other organic disease should be considered. The application of this test to the patients with functional gastrointestinal symptoms especially to find the association of motor abnormalities to the symptom has less impressive yield. Antroduodenal manometry is now readily available only in some tertiary care centers. The aim of this review is to describe the antroduodenal manometry technique, interpretation and clinical utility.

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“…However, these techniques present a series of technical and physiological problems which limit their application and utility. 7,8 Myoelectric techniques have also been validated as an alternative form of monitoring intestinal motility by means of a direct relationship with the mechanical contraction of the smooth muscle of the small intestine. 24,33 Electroenterogram (EEnG) is the myoelectric signal generated in the muscular layers and can be registered in the intestinal serosa.…”

Section: Intestinal Motilitymentioning

confidence: 99%

Combined Method for Reduction of High Frequency Interferences in Surface Electroenterogram (EEnG)

et al. 2010

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Surface electroenterogram (EEnG) recording is a novel technique for monitoring intestinal motility non-invasively. However, surface EEnG recordings are contaminated by cardiac activity, the respiratory artefact, movement artefacts and other types of interference. The goal of this work is to remove electrocardiogram (ECG) interference and movement artefacts from surface EEnG by means of a combined method of empirical mode decomposition and independent component analysis. For this purpose, 11 recording sessions were conducted on animal models. In order to quantify the effectiveness of the proposed method, several parameters were calculated from each session: signal-to-ECG interference ratio (S/I), energy over 2 Hz (EF2) which quantifies the intestinal motility index of external EEnG recording and the variation of EF2. The proposed method removes both ECG interference and movement artefacts from surface EEnG, obtaining a significantly higher S/I ratio and considerably reducing the non-physiological variation of EF2. Furthermore, after applying the combined method, the correlation coefficient between internal recording EF2 and surface recording EF2 rises significantly. The proposed method could therefore be a useful tool to reduce high frequency interference in EEnG recording and to provide more robust non-invasive intestinal motility indexes.

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Antroduodenal Manometry: An Evaluation of an Emerging Methodology

Cited by 22 publications

References 4 publications

Gastrointestinal motility revisited: The wireless motility capsule

Gastrointestinal motility revisited: The wireless motility capsule

Technique of Functional and Motility Test: How to Perform Antroduodenal Manometry

Combined Method for Reduction of High Frequency Interferences in Surface Electroenterogram (EEnG)

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