G
Gregory O'Grady
Researcher at University of Auckland
Publications - 202
Citations - 4480
Gregory O'Grady is an academic researcher from University of Auckland. The author has contributed to research in topics: Medicine & Internal medicine. The author has an hindex of 31, co-authored 154 publications receiving 3357 citations. Previous affiliations of Gregory O'Grady include Wellington Management Company & Auckland City Hospital.
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Journal ArticleDOI
Abnormal Initiation and Conduction of Slow-Wave Activity in Gastroparesis, Defined by High-Resolution Electrical Mapping
Gregory O'Grady,Timothy R. Angeli,Peng Du,Chris Lahr,Wim J. E. P. Lammers,Wim J. E. P. Lammers,John A. Windsor,Thomas L. Abell,Gianrico Farrugia,Andrew J Pullan,Andrew J Pullan,Leo K. Cheng,Leo K. Cheng +12 more
TL;DR: High-resolution mapping revealed new categories of abnormal human slow-wave activity that could contribute to the pathogenesis of gastroparesis, including aberrant initiation, aberrant conduction, and low amplitude activity.
Journal ArticleDOI
Origin and propagation of human gastric slow-wave activity defined by high-resolution mapping.
Gregory O'Grady,Peng Du,Leo K. Cheng,John U. Egbuji,Wim J. E. P. Lammers,John A. Windsor,Andrew J Pullan,Andrew J Pullan +7 more
TL;DR: High-resolution HR mapping has provided a more complete understanding of normal human gastric slow-wave activity and will inform noninvasive diagnostic strategies in disease states.
Journal ArticleDOI
Loss of Interstitial Cells of Cajal and Patterns of Gastric Dysrhythmia in Patients With Chronic Unexplained Nausea and Vomiting
Timothy R. Angeli,Leo K. Cheng,Leo K. Cheng,Peng Du,Tim Hsu Han Wang,Cheryl E. Bernard,Maria Giuliana Vannucchi,Maria Simonetta Faussone-Pellegrini,Christopher J. Lahr,Ryash Vather,John A. Windsor,Gianrico Farrugia,Thomas L. Abell,Gregory O'Grady +13 more
TL;DR: Cellular and bioelectrical abnormalities in patients with CUNV were observed to be similar to those of gastroparesis, indicating that they could be spectra of the same disorder.
Journal ArticleDOI
Quantification of in vivo colonic motor patterns in healthy humans before and after a meal revealed by high‐resolution fiber‐optic manometry
Phil G. Dinning,Phil G. Dinning,Phil G. Dinning,Lukasz Wiklendt,Lyn Maslen,Ian L. Gibbins,Vicki Patton,Vicki Patton,John W. Arkwright,David Z. Lubowski,David Z. Lubowski,Gregory O'Grady,Peter A. Bampton,Simon J. H. Brookes,Marcello Costa +14 more
TL;DR: Until recently, investigations of the normal patterns of motility of the healthy human colon have been limited by the resolution of in vivo recording techniques.
Journal ArticleDOI
A systematic review of methods to palliate malignant gastric outlet obstruction.
TL;DR: Improved clinical outcomes with ES over OGJ for patients with malignant GOO are demonstrated, however, there is insufficient data to adequately compare ES with LGJ, which is the current standard for operative management.