ID: 3522547 HIGH-VOLUME COLON-IRRIGATION BOWEL PREP IS SAFE, EFFECTIVE, AND PREFERRED BY IBD PATIENTS

A feasibility study was performed to test a bowel preparation (BP) method that would improve patients’ experience of colon capsule endoscope (CCE) while retaining clinical adequacy. Specifically, the use of high-volume colon irrigation with the Hygieacare® System, HygiPrep™, was tested in conjunction with Medtronic’s PillCam COLON 2 Capsule. This prospective, single-center, and IRB-approved study evaluated HygiPrep use prior to the PillCam COLON 2 procedure instead of the standard split-polyethylene glycol-electrolyte (PEG) oral prep. The study was performed at Austin Gastroenterology (Austin, TX), and all capsule video files were forwarded to a Central Reader to evaluate and compile a study report. Six of the seven (86%) subjects completed both the HygiPrep and PillCam COLON 2 exams and were graded as excellent, good, or adequate by the Central Reader. Patients’ feedback reported positive satisfaction scores for both the HygiPrep and the PillCam COLON 2 procedures. These results support our hypothesis that HygiPrep was as effective as Split-PEG BP. We suggest that the HygiPrep, is a suitable BP for CCE, providing adequate BP and high patient satisfaction.

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New Ultra Low Volume Bowel Preparation and Overview of Existing Bowel Preparations

Current Drug Metabolism ◽

10.2174/1567201817666200810112136 ◽

2020 ◽

Vol 21 (11) ◽

pp. 844-849 ◽

Cited By ~ 1

Author(s):

Hein Htet ◽

Jonathan Segal

Keyword(s):

Clinical Trials ◽

Side Effects ◽

Bowel Preparation ◽

High Volume ◽

Extensive Literature ◽

Electrolyte Disturbances ◽

Bowel Cleansing ◽

Bowel Prep ◽

Low Volume ◽

Bowel Preparations

Background: Adequate bowel cleansing is essential in achieving a good quality colonoscopy. However, one of the barriers to achieving high-quality bowel cleansing is the patient's tolerability. Different bowel preparations have been developed to improve tolerability while maintaining adequate bowel cleansing. Objectives: We aim to explore the pros and cons of commonly used bowel preparations, particularly highlighting the new ultra-low volume bowel preparation. Methods:: Extensive literature search was carried out on various databases to evaluate the effectiveness and side effects of different bowel cleansing agents, including findings of recent clinical trials on ultra-low bowel preparation. Results:: Polyethylene glycol (PEG) has been commonly used as a bowel prep. Due to its high volume required to ingest to achieve an adequate effect, it has been combined with various adjuncts to reduce the volume to make it more tolerable. Magnesium and phosphate-based preps can achieve low volume, but they can be associated with multiple side effects, mainly electrolyte disturbances. Ultra low volume prep (NER1006) was achieved by combing PEG with ascorbic acid, and its efficacy and side effects were demonstrated in three noninferiority studies. Conclusion: It is important to consider patient preferences, co-morbidities and tolerability, and efficacy and side effect profiles when choosing bowel prep for patients undergoing colonoscopy. New ultra-low bowel prep showed promising results in initial clinical trials, but further real-world post-marketing data will inform its value in clinical practice.

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Colon Irrigation Bowel Preparation Supports Multiple Clinical Benefits in Over 8,000 Patients

Open Journal of Gastroenterology and Hepatology ◽

10.28933/ojgh-2021-02-1605 ◽

2021 ◽

pp. 48

Author(s):

Keyword(s):

Bowel Preparation ◽

High Volume ◽

Serious Adverse Events ◽

Detection Rates ◽

Serrated Polyp ◽

Adenoma Detection ◽

Retrospective Clinical Study ◽

Clinical Benefits ◽

Colon Irrigation ◽

High Level

This retrospective clinical study evaluates an FDA-cleared high-volume colon irrigation bowel prep (BP) for colonoscopy, performed under standard operating procedures with Austin Gastroenterology (AG, Austin, TX). Patient related outcomes in 8,364 procedures, prescribed by 33 physicians in 4.5 years, demonstrated no serious adverse events and excellent satisfaction rates. The high level of adequacy using this BP far exceeds national benchmarking thresholds for adequate colon preparations. Adequacy rates remain high even when considering poor BP risk factors and patient noncompliance with ancillary pre-preparation regimens. Our analysis demonstrates that this colon irrigation BP has excellent Boston bowel preparation scores (BBPS), associated with high-level adenoma detection rates (ADR) and sessile serrated polyp (SSP) detection rates. ADR and SSP are inversely related to the patient’s post-colonoscopy interval colorectal cancer (CRC) risk, and are similarly related to an inadequate BP. Both modeling data and performance characteristics strongly suggest that this colon irrigation BP is highly safe, effective, and will reduce the costs and risks related to inadequate BP. This, accordingly, leads to significantly improved quality outcomes, savings to the healthcare systems, and a reduction of the patient’s burden.

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Morphology, Distribution and Identification of Micro-Constituents Along Grain Boundaries in Nickel-Base Alloys

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100071326 ◽

1973 ◽

Vol 31 ◽

pp. 176-177

Author(s):

D. E. Fornwalt ◽

A. R. Geary ◽

B. H. Kear

Keyword(s):

Electron Microscope ◽

Grain Boundaries ◽

Volume Fraction ◽

Rupture Life ◽

Stress Rupture ◽

High Volume ◽

Precipitate Morphology ◽

Stress Rupture Life ◽

Nickel Base ◽

Scanning Electron

A systematic study has been made of the effects of various heat treatments on the microstructures of several experimental high volume fraction γ’ precipitation hardened nickel-base alloys, after doping with ∼2 w/o Hf so as to improve the stress rupture life and ductility. The most significant microstructural chan§e brought about by prolonged aging at temperatures in the range 1600°-1900°F was the decoration of grain boundaries with precipitate particles.Precipitation along the grain boundaries was first detected by optical microscopy, but it was necessary to use the scanning electron microscope to reveal the details of the precipitate morphology. Figure 1(a) shows the grain boundary precipitates in relief, after partial dissolution of the surrounding γ + γ’ matrix.

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A Comparison of Tem and Apfim to the Interpretation of Modulated Microstructures

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010011742x ◽

1985 ◽

Vol 43 ◽

pp. 70-71

Author(s):

M.G. Burke ◽

M.K. Miller

Keyword(s):

Low Temperature ◽

Microstructural Characterization ◽

Superlattice Reflection ◽

High Volume ◽

Atom Probe ◽

Dark Field ◽

Miscibility Gap ◽

Second Phase ◽

Two Phase ◽

Probe Field

Interpretation of fine-scale microstructures containing high volume fractions of second phase is complex. In particular, microstructures developed through decomposition within low temperature miscibility gaps may be extremely fine. This paper compares the morphological interpretations of such complex microstructures by the high-resolution techniques of TEM and atom probe field-ion microscopy (APFIM).The Fe-25 at% Be alloy selected for this study was aged within the low temperature miscibility gap to form a <100> aligned two-phase microstructure. This triaxially modulated microstructure is composed of an Fe-rich ferrite phase and a B2-ordered Be-enriched phase. The microstructural characterization through conventional bright-field TEM is inadequate because of the many contributions to image contrast. The ordering reaction which accompanies spinodal decomposition in this alloy permits simplification of the image by the use of the centered dark field technique to image just one phase. A CDF image formed with a B2 superlattice reflection is shown in fig. 1. In this CDF micrograph, the the B2-ordered Be-enriched phase appears as bright regions in the darkly-imaging ferrite. By examining the specimen in a [001] orientation, the <100> nature of the modulations is evident.

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