Hydrogen Breath Tests for Diagnosis of Carbohydrate Malabsorption and Small Intestinal Bacterial Overgrowth Allen A. Lee, MD Jason R. Baker, PhD Hydrogen breath tests (HBTs) are common, noninvasive, but indirect…
Anorectal Manometry and Biofeedback Jason R. Baker, PhD Anorectal manometry is a test of anorectal function that can provide useful information about disorders that affect defecation and continence. There are…
Small Bowel Motility Testing: Manometry and Scintigraphy Kimberly N. Harer, MD William L. Hasler, MD If a patient’s small bowel motility is in question after standard evaluation and imaging (plain…
Ambulatory 24-Hour Esophageal pH Monitoring Jason R. Baker, PhD Ambulatory 24-hour esophageal pH monitoring is a study in which continuous esophageal intraluminal pH measurement allows the detection of changes in…
Esophageal Manometry Joseph R. Triggs, MD, PhD John E. Pandolfino, MD, MSCI High-resolution esophageal manometry (HREM) and subsequent interpretation using the Chicago Classification (CC) is the gold standard for the…
Percutaneous Liver Biopsy Shreya Sengupta, MD Liver biopsy has a central role in the evaluation of patients with suspected liver disease and can assess the nature and severity of disease….
Gastric Per-Oral Endoscopic Myotomy Maen Masadeh, MD Rami El Abiad, MD Mouen A. Khashab, MD Gastroparetic patients present with a wide variety of symptoms that include nausea, vomiting, early satiety,…
Abdominal Paracentesis Shreya Sengupta, MD Abdominal paracentesis with appropriate ascitic fluid analysis is one of the most rapid and cost-effective methods of diagnosing the cause of ascites.1 Paracentesis is safely…
Esophageal Peroral Endoscopic Myotomy Amy Hosmer, MD Ryan Law, DO Prior to 2008, the standard of care for the treatment of achalasia was Heller myotomy. Since that time, the development…
Colon Endoscopic Submucosal Dissection Sergey V. Kantsevoy, MD, PhD Endoscopic submucosal dissection (ESD) was developed in Japan for en bloc removal of gastric cancer and precancerous lesions located in the…