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Robert Siwiec · SciRah

Researcher profile · Semantic Scholar

Robert Siwiec

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Robert Siwiec — researcher profile on SciRah

h-index: 12
Works: 114
Citations: 612

Most-cited papers

Diagnosis and management of small intestinal bacterial overgrowth.
M. Bohm, Robert Siwiec, J. Wo
2013Nutrition in clinical practice117 citations
Semantic Scholar
Gastric peroral endoscopic myotomy for the treatment of refractory gastroparesis: a prospective single-center experience with mid-term follow-up.
Lennon Gregor, J. Wo, J. DeWitt, Brandon Yim +7 more
2020Gastrointestinal Endoscopy53 citations
Semantic Scholar
Functional Connectivity of the Cortical Swallowing Network in Humans
A. Babaei, B. D. Ward, Robert Siwiec, Shahryar Ahmad +4 more
2013NeuroImage49 citations Open access
Semantic Scholar
Associations of Fecal Short Chain Fatty Acids With Colonic Transit, Fecal Bile Acid, and Food Intake in Irritable Bowel Syndrome
M. Waseem, Andrea Shin, Robert Siwiec, Toyia James-Stevenson +8 more
2022Clinical and Translational Gastroenterology30 citations Open access
Semantic Scholar
Characterization of Proximal Small Intestinal Microbiota in Patients With Suspected Small Intestinal Bacterial Overgrowth: A Cross-Sectional Study
A. Shin, Xiang Gao, M. Bohm, Huaiying Lin +7 more
2019Clinical and Translational Gastroenterology21 citations Open access
Semantic Scholar
Microbiota and short chain fatty acid relationships underlie clinical heterogeneity and identify key microbial targets in irritable bowel syndrome (IBS)
Andrea S. Shin, Yue J. Xing, M. Waseem, Robert Siwiec +12 more
2025Scientific Reports19 citations Open access
Semantic Scholar
Comparison of functional lumen imaging probe and high-resolution manometry to assess response after peroral endoscopic myotomy.
J. Dewitt, Robert Siwiec, William R. Kessler, John G. Wo +5 more
2021Gastrointestinal Endoscopy16 citations
Semantic Scholar
Symptom Association for Gastroesophageal Reflux Disease by pH Monitoring After Peroral Endoscopic Myotomy
J. DeWitt, William R. Kessler, J. Wo, Sarah Stainko +4 more
2022American Journal of Gastroenterology14 citations Open access
Semantic Scholar
Evaluation of timed barium esophagram after per-oral endoscopic myotomy to predict clinical response
J. DeWitt, Robert Siwiec, A. Perkins, Daniel A. Baik +10 more
2021Endoscopy International Open14 citations Open access
Semantic Scholar
Pyloric Functional Lumen Imaging Probe Measurements Are Dependent on Balloon Position
Brandon Yim, Lennon Gregor, Robert Siwiec, Mohammad A. Al-Haddad +2 more
2023Journal of Neurogastroenterology and Motility13 citations Open access
Semantic Scholar
Safety of same-day discharge after peroral endoscopic myotomy.
Yara Sarkis, Mohammad A. Al-Haddad, Robert Siwiec, William R. Kessler +4 more
2022Diseases of the esophagus12 citations
Semantic Scholar
Risk factors associated with upper aerodigestive tract or coliform bacterial overgrowth of the small intestine in symptomatic patients
M. Bohm, A. Shin, Sean Teagarden, Hui-Ping Xu +4 more
2020Journal of Clinical Gastroenterology11 citations Open access
Semantic Scholar
Intrinsic Functional Connectivity of the Brain Swallowing Network (BSN) During Subliminal Esophageal Acid Stimulation
A. Babaei, Robert Siwiec, M. Kern, B. D. Ward +2 more
2013Neurogastroenterology and Motility11 citations Open access
Semantic Scholar
Associations of Habitual Dietary Intake with Fecal Short Chain Fatty Acids and Bowel Functions in Irritable Bowel Syndrome
Gerardo Calderón, Chirag Patel, M. Camilleri, Toyia James-Stevenson +8 more
2021Journal of Clinical Gastroenterology10 citations Open access
Semantic Scholar
Esophageal Acid Stimulation Alters Insular Cortex Functional Connectivity in Gastroesophageal Reflux Disease
Robert Siwiec, A. Babaei, M. Kern, Erica A. Samuel +2 more
2014Neurogastroenterology and Motility9 citations Open access
Semantic Scholar
UNSEDATED TRANSNASAL ENDOSCOPY WITH ULTRATHIN ENDOSCOPE AS A SCREENING TOOL FOR RESEARCH STUDIES
Robert Siwiec, K. Dua, S. Surapaneni, M. Hafeezullah +2 more
2012The Laryngoscope9 citations Open access
Semantic Scholar
Safety of Same-Day Discharge After Gastric Peroral Endoscopic Myotomy in Patients with Refractory Gastroparesis: An International Multi-Center Study.
Marita Salame, Y. Ichkhanian, Nwal Hadaki, John Wo +26 more
2025Gastrointestinal Endoscopy8 citations
Semantic Scholar
Relationships of Intestinal Lactase and the Small Intestinal Microbiome with Symptoms of Lactose Intolerance and Intake in Adults
Claire L. Jansson-Knodell, E. Krajicek, Monica Ramakrishnan, N. Rogers +8 more
2022Digestive Diseases and Sciences7 citations Open access
Semantic Scholar
Delayed gastric emptying is not associated with a microbiological diagnosis of small intestinal bacterial overgrowth
Gerardo Calderón, Robert Siwiec, M. Bohm, T. Nowak +4 more
2020Digestive Diseases and Sciences7 citations Open access
Semantic Scholar
Oropharyngeal Dysphagia: Videoendoscopy-Guided Work-up and Management
Robert Siwiec, A. Babaei
2019Evaluation and Management of Dysphagia7 citations
Semantic Scholar
A New International Scheme for the Classification and Management of Clinical Outcomes Post-Gastric Peroral Endoscopic Myotomy.
Y. Ichkhanian, Marita Salame, John Wo, Thomas Nowak +26 more
2025Clinical Gastroenterology and Hepatology3 citations
Semantic Scholar
Microbiota-Short Chain Fatty Acid Relationships and Microbial Substrate Preferences Vary Across the Spectrum of Irritable Bowel Syndrome (IBS)
Andrea Shin, Yue J. Xing, M. Waseem, Robert Siwiec +11 more
2024medRxiv3 citations Open access
Semantic Scholar
Clinical Presentation of Small Intestinal Bacterial Overgrowth from Aerodigestive Tract Bacteria Versus Colonic-Type Bacteria: A Comparison Study
Daanish A. Siddique, Claire L. Jansson-Knodell, Anita K. Gupta, Gage Howard +5 more
2023Digestive Diseases and Sciences3 citations
Semantic Scholar
480 Efficacy of a Novel “UES Assist Device” in Management of Supraesophageal Complications of Reflux Disease: the Results of a Limited Clinical Trial
A. Babaei, Sohrab Rahimi Naini, W. J. Hogan, M. DeMara +8 more
20123 citations
Semantic Scholar
Colonic Myeloid Sarcoma as a Rare Presentation of Relapsed Acute Myeloid Leukemia
Parkpoom Phatharacharukul, Nabil F. Fayad, Robert Siwiec
2020ACG Case Reports Journal2 citations Open access
Semantic Scholar
661 The Resting and Guided Thinking State Functional Connectivity of the Nausea Network in Cyclic Vomiting Syndrome: The Effect of Emotional Stress
Erica A. Samuel, M. Kern, A. Babaei, Anna Patel +5 more
20132 citations
Semantic Scholar
Su2105 Minimal Hepatic Encephalopathy (MHE) Is Associated With Alterations in Brain Default-Mode Network (DMN)
Anna Patel, A. Babaei, M. Kern, Erica A. Samuel +6 more
20132 citations Open access
Semantic Scholar
Gastric peroral endoscopic myotomy revision is safe and effective: A study from a large motility referral center
Nwal Hadaki, John Wo, Hashem N. Albunni, Y. Ichkhanian +9 more
2026International Journal of Gastrointestinal Intervention1 citations Open access
Semantic Scholar
407: MICROBIAL METABOLITES, ACETATE AND BUTYRATE, ARE LINKED TO ANXIETY IN PATIENTS WITH IRRITABLE BOWEL SYNDROME
R. Waseem, Toyia James-Stevenson, Robert Siwiec, M. Bohm +7 more
2022Gastroenterology1 citations
Semantic Scholar
Prospective 3-Month Evaluation of the Upper Esophageal Sphincter (UES) Assist Device on both Reflux Symptoms and Intraluminal UES Pressure
Robert Siwiec, S. Silvers, James S. Miller
20171 citations
Semantic Scholar
Tu1804 Resting and Guided Thinking State Functional Connectivity of the Thalamus With the Insula and Cingulate Cortex in Cyclic Vomiting Syndrome
Erica A. Samuel, M. Kern, Robert Siwiec, A. Babaei +3 more
20141 citations Open access
Semantic Scholar
Su2102 Objective Diagnosis of Minimal Hepatic Encephalopathy (MHE) by Analysis of Brain Resting State Functional Connectivity
Anna Patel, M. Kern, A. Babaei, Erica A. Samuel +5 more
20131 citations Open access
Semantic Scholar
Su1985 Thalamic Connectivity to the Cerebral Cortex is Different in GERD Patients Compared to Healthy Controls
M. Kern, Robert Siwiec, A. Babaei, Erica A. Samuel +1 more
20121 citations
Semantic Scholar
Tu1655: A NEW INTERNATIONAL SCHEME FOR THE CLASSIFICATION AND MANAGEMENT OF CLINICAL OUTCOMES POST-GASTRIC PERORAL ENDOSCOPIC MYOTOMY
Y. Ichkhanian, Marita Salame, Adel Hajj Ali, John Wo +27 more
2025Gastroenterology0 citations
Semantic Scholar
S2241 Redo Gastric Peroral Endoscopic Myotomy Is Associated With Improvement in Symptoms and Regain of Clinical Success for Refractory Gastroparesis: A Single Center Experience
Hashem N. Albunni, John Wo, Nwal Hadaki, Y. Ichkhanian +7 more
2025American Journal of Gastroenterology0 citations
Semantic Scholar
CORRELATION BETWEEN CLINICAL OUTCOMES AND QUALITY OF LIFE, AND THE IMPACT OF DAILY OPIOID INTAKE AFTER GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY: A SINGLE CENTER LONG TERM OUTCOMES STUDY
Y. Ichkhanian, Hashem N. Albunni, Adel Hajj Ali, John Wo +7 more
2025Gastrointestinal Endoscopy0 citations
Semantic Scholar
Tu1664: GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY IS ASSOCIATED WITH SUSTAINED IMPROVEMENT IN QUALITY OF LIFE UP TO 60 MONTHS: A LONG-TERM PROSPECTIVE STUDY
Hashem N. Albunni, John Wo, Y. Ichkhanian, Nwal Hadaki +7 more
2025Gastroenterology0 citations
Semantic Scholar
GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY IS ASSOCIATED WITH LONG -TERM SUSTAINED CLINICAL SUCCESS AND IMPROVED QUALITY OF LIFE
Marita Salame, Y. Ichkhanian, Lennon Gregor, Hashem N. Albunni +9 more
2024Gastrointestinal Endoscopy0 citations
Semantic Scholar
Mo1656 SAFETY OF SAME-DAY DISCHARGE AFTER GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY IN PATIENTS WITH REFRACTORY GASTROPARESIS: AN INTERNATIONAL MULTI-CENTER STUDY
Marita Salame, Y. Ichkhanian, Lennon Gregor, Hashem N. Albunni +24 more
2024Gastroenterology0 citations
Semantic Scholar
Mo1654 CHARACTERIZATION OF A CLINICAL CLASSIFICATION FOR GASTROPARESIS (GP) BASED ON PREDOMINANT-SYMPTOM PRESENTATION
John Wo, Betty Li, Matthew Hays, Kara Murphy +5 more
2024Gastroenterology0 citations
Semantic Scholar
Mo1660 ANTRODUODENAL MANOMETRY (ADM) AND GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY (G-POEM) FOR THE TREATMENT OF GASTROPARESIS: NORMALIZATION OF GASTRIC EMPTYING IS ASSOCIATED WITH GREATER POSTPRANDIAL PROXIMAL DUODENAL CONTRACILE STRENGTH
Lennon Gregor, Hashem N. Albunni, Jacque Peterman, Sarah Stainko +7 more
2024Gastroenterology0 citations
Semantic Scholar
CHANGES OF PYLORIC DIAMETER AND COMPLIANCE IN PATIENTS WITH GASTROPARESIS (GP) AFTER GASTRIC PERORAL ENDOSCOPIC MYOTOMY (G-POEM)
John Wo, Jacque Peterman, Brandon Yim, Sarah Stainko +5 more
2024Gastrointestinal Endoscopy0 citations
Semantic Scholar
A COMPREHENSIVE ANALYSIS ON THE DIAGNOSIS AND THE MANAGEMENT OF CLINICAL FAILURE POST GASTRIC PERORAL ENDOSCOPIC MYOTOMY: AN INTERNATIONAL COHORT STUDY
Y. Ichkhanian, Marita Salame, John Wo, Thomas Nowak +24 more
2024Gastrointestinal Endoscopy0 citations
Semantic Scholar
A VALIDATED NOVEL PREDICTIVE TOOL FOR CLINICAL RESPONSE POST GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY (G-POEM) AT 6-12 MONTHS: A LARGE INTERNATIONAL MULTI-CENTER COHORT STUDY
Y. Ichkhanian, Marita Salame, J. Hwang, Andrew A. Li +24 more
2024Gastrointestinal Endoscopy0 citations
Semantic Scholar
PREDICTORS OF CLINICAL RESPONSE TO GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY (G-POEM) IN PATIENTS WITH REFRACTORY GASTROPARESIS
Hashem N. Albunni, J. Wo, Sarah Stainko, Lennon Gregor +8 more
2023Gastrointestinal Endoscopy0 citations
Semantic Scholar
Su1628 ANTRODUODENAL MANOMETRY (ADM) PRIOR TO GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY (G-POEM) FOR THE TREATMENT OF GASTROPARESIS: AN UPDATE ON MOTILITY PARAMETERS ASSOCIATED WITH NORMALIZATION OF GASTRIC EMPTYING
Lennon Gregor, Hashem N. Albunni, Jacque Peterman, Sarah Stainko +7 more
2023Gastroenterology0 citations
Semantic Scholar
Su1645 PYLORUS FUNCTIONAL LUMEN IMAGING PROBE (FLIP) IN 460 PATIENTS WITH GASTROPARESIS (GP): ANALYSIS OF DISTENSIBILITY CURVE AFTER ADJUSTED FOR PYLORUS MINIMAL DISTENSION PRESSURE
V. Ravichandran, Danielle Kem, Kara Murphy, Brandon Yim +5 more
2023Gastroenterology0 citations
Semantic Scholar
INTERMEDIATE TERM CLINICAL RESPONSE TO GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY (G-POEM) IN REFRACTORY GASTROPARESIS (GP) CORRELATED WITH IMPROVEMENTS IN GASTRIC EMPTYING SCAN (GES) AND PYLORIC SPHINCTER FUNCTION
Hashem N. Albunni, J. Wo, J. Dewitt, Sarah Stainko +9 more
2023Gastrointestinal Endoscopy0 citations
Semantic Scholar
210 GASTRIC PER-ORAL ENDOSCOPIC MYOTOMY (G-POEM) FOR THE TREATMENT OF GASTROPARESIS (GP) IS ASSOCIATED WITH IMPROVED QUALITY OF LIFE (QOL) OUTCOMES UP TO 48-MONTHS FOLLOW-UP DESPITE DECLINING CLINICAL SUCCESS
Hashem N. Albunni, J. Wo, Sarah Stainko, Lennon Gregor +8 more
2023Gastroenterology0 citations
Semantic Scholar
Mo1877 ASSOCIATIONS OF FECAL MICROBIAL METAGENOMES, SHORT CHAIN FATTY ACIDS, AND HOST VARIABLES IN IRRITABLE BOWEL SYNDROME
A. Shin, Yue Xing, Xiang Gao, M. Waseem +8 more
2023Gastroenterology0 citations
Semantic Scholar

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Sarah Stainko×22
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Sarah Stainko — researcher profile on SciRah
Hashem N. Albunni×16
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Hashem N. Albunni — researcher profile on SciRah
J. Wo×15
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J. Wo — researcher profile on SciRah
Lennon Gregor×14
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John Wo — researcher profile on SciRah

Akira Saito×14

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M. Bohm — researcher profile on SciRah

Mohammad A. Al-Haddad×11

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