Chapter 8: Digestive
System Abbreviations and
By Stacie Hauenstein
• Pertaining to the nose (nas/o) and stomach (gastr/o)
• A nasogastric tube is a flexible tube, which is inserted
into the nose, through the esophagus, and down into
• A nasogastric tube can be used for pumping food into
the stomach or sucking fluids out of the stomach.
Fecal Occult Blood Test (FOBT)
• A Fecal Occult Blood Test (FOBT) is a test to
determine if there is any blood in the feces.
• Some conditions that could cause blood in the
stool are colorectal cancer, hemorrhoids, anal
fissures, colon polyps, peptic ulcers, ulcerative
colitis, gastroesophageal reflux disease (GERD)
, Crohn’s disease.
Aspartate Transaminase (AST)
• Aspartate Transaminase (AST) is an enzyme that is
normally present in the blood
• It is also a diagnostic procedure that tests for the AST
• The levels of this enzyme are increased in people with
liver disease or damage
• The normal level of AST is 5-40 units per liter of serum
Gastroesophageal Reflux Disease
• Gastroesophageal Reflux Disease (GERD) occurs when the
stomach acids comes back up into the esophagus.
• Usually occurs if the lower esophageal sphincter (LES) is
not closing properly
• GERD can cause inflammation, pain, dental
problems, Barrett’s esophagus, brochospasms, esophageal
• Some risk factors include alcohol, pregnancy, obesity, and