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gastroenterology
- the branch of medicine concerned with digestive diseases
- concentrates on the diagnosis and treatment of diseases involving the esophagus, stomach, small intestine, large intestine (colon), liver, gallbladder, and pancreas
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anterior
- before or in front of
- in anatomical nomenclature, refers to the ventral or abdominal side of the body
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bilirubin
the orange-yellow pigment of bile, formed principly by the breakdown of hemoglobin in red blood cells (RBCs) after termination of their normal lifespan
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cholecystokinin
a hormone, produced by the mucosa of the upper intestine, that stimulates the contraction of the gallbladder and secretion of pancreatic enzymes
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chyme
the semifluid, homogenous, creamy paste produced by gastric digestion of food
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defecation
the elimination of feces from the digestive tract through the rectum
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distension
the state of being distended, swollen, or stretched out
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emulsification
- the breakdown of large fat globules into smaller, uniformly distributed particules
- accomplished mainly by bile acids in the small intestine
- first step in the preparation of fat for chemical digestion by specific enzymes
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hydrochloric acid
an acid that is normally present in gastric juice
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lipid
any of a group of fats or fatlike substances that are insoluble in water (i.e. fats and cholesterol) but soluble in fat solvents such as alcohol, ether, and chloroform
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mucous membranes
- a type of epithelial tissue that lines body surfaces and excretes a thick substance
- Ex - the linings of the mouth, the digestive tube, the respiratory passages, and the genitourinary tract
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pepsin
- the principal digestive enzyme of gastric juice that begins protein digestion
- the gastric glands produce pepsin continuously but in different amounts, depending on the quantity of food absorbed
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peristalsis
progressive, wavelike contractions that propel foodstuffs through the digestive tract, bile through the bile duct, and urine in the urinary system through the ureters
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pathway of food through the digestive system
- food enters
- mouth
- pharynx
- esophagus
- stomach
- duodenum
- jejunum
- ileum
- cecum
- ascending colon
- transverse colon
- sigmoid colon
- rectum
- anus
- feces expelled
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sial/o
saliva, salivary gland
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stomatopathy
- any disease of the mouth
- synonymous with stomatosis
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glossitis
inflammation of the tongue
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cheilosis
- abnormal condition of the lips
- characterized by scales & fissures caused by a deficiency of vitamin B complex (especially riboflavin) in the diet
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gingivitis
inflammation of the gums
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sialolith
a calculus or stone formed in a salivary gland or duct
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pharyng/o
pharynx (throat)
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esophagocele
a hernia of the esophagus
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pharyngitis
inflammation of the pharynx (throat)
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pylor/o
pylorus, pyloric sphincter
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enter/o
intestine (usually small intestine)
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gastrectomy
partial or total removal of the stomach
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pyloroplasty
surgical repair of the pyloric sphincter
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duodenoscopy
visual examination of the duodenum (first part of the small intestine)
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enteropathy
an intestinal disease
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jejunorrhaphy
suture of the jejunum (second part of the small intestine)
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ileitis
inflammation of the ileum (third part of the small intestine)
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appendectomy
excision of the appendix (wormlike projection that hangs from the cecum)
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appendicitis
inflammation of the appendix
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colostomy
surgical creation of an artificial opening on the abdominal wall by incising the colon and drawing it out to the surface
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colonoscopy
visual examination of the inner surface of the colon using a colonoscope
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sigmoidotomy
incision of the sigmoid colon
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rectocele
- herniation or protrusion of the rectum
- synonymous with proctocele
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proctodynia
pain in the rectum or around the anus
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hepatomegaly
enlargement of the liver
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cholangiogram
radiographic record of the bile ducts obtained by cholangiography
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cholelithiasis
formation or presence of calculi (bile stones) in the gallbladder or common duct
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cholecystectomy
excision of the gallbladder
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choledochostomy
forming an opening into the common bile duct
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dys-
painful, bad, difficult
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hyper-
excessive, above normal
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anorexia
loss of apetite; aversion to food
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diarrhea
abnormally frequent discharge or flow of fluid fecal matter from the bowel
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dyspepsia
difficult digestion
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hyperemesis
excessive vomiting
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periodontist
- a specialist in peridontics
- branch of dentistry concerned with the treatment of abnormal conditions of the tissues around the teeth
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postprandial
after a meal
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sublingual
pertaining to the area under the tongue
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cheilitis
inflammation of the lip
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dental caries
- a plaque disease caused by the complex interaction of food, especially starches and sugars, with bacter that form dental plaque
- tooth decay
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leukoplakia
a precancerous, slowly developing change in the mucous membrane characterized by thickened, white, firmly attached patches that are slightly raised and sharply circumscribed
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periodontal disease
a disease of the supporting structures of the teeth (the periodontium) including the gums and bone structure to which the teeth are anchored
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sialoadenitis
inflammation of a salivary gland
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stomatitis
- any inflammatory condition of the mouth
- may result from infection by bacteria, viruses, or fungi; from exposure to certain chemicals or drugs; from vitamin deficiency; or from a systemic inflammatory disease
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aphthous stomatitis
a recurring condition characterized by the eruption of painful ulcers (canker sores) on the mucous membranes of the mouth
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herpetic stomatitis
a form of stomatitis caused by a herpes virus infection
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thrush
an infection of the mouth or throat, especially in infants and young children, caused by Candida albicans
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esophageal varices
tortuous (twisted) dilatation of esophageal veins situated at the distal end of the esophagus, especially susceptible to ulceration and hemorrhage
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pharyngitis
- the most common throat disorder
- an acute or chronic inflammation of the pharynx
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achalasia
an abnormal condition characterized by inability of a muscle to relax, particularly the cardiac sphincter of the stomach
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gastroenteritis
inflammation of the stomach and small intestine, accompanying numerous gastrointestinal disorders
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gastroesophageal reflux
a backflow of contents of the stomach into the esophagus; often the result of incompetence of the lower esophageal sphincter
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pyloric stenosis
narrowing of the pyloric sphincter at the outlet of the stomach, causing an obstruction that blocks the flow of food into the small intestine
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ulcer
- a lesion or erosion of the mucous membrane
- major forms - gastric & duodenal ulcers
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celiac disease
an inborn error of metabolism characterized by the inability to hydrolyze peptides contained in gluten
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Crohn disease
a chronic inflammation, usually of the ileum, although it may affect any portion of the gastrointestinal tract
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colitis
inflammation of the colon or large intestine; usually due to infection
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ulcerative colitis
a chronic inflammation and ulceration of the colon, often beginning in the rectum or sigmoid colon and extending upward into the entire colon
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diverticular disease
condition in which bulging pouches (diverticula) in the GI wall push the mucosal lining through the surrounding muscle
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diverticulitis
inflammation of one or more diverticula
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diverticulosis
the presence of pouchlike herniations through the muscular layer of the colon, particularly the sigmoid colon
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dysentery
inflammation of the intestine, especially of the colon, which may be caused by chemical irritants, bacteria, protozoa, or parasites
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Hirschsprung disease
congenital absence of autonomic ganglia (groups of nerve cells) in the smooth muscle wall of the colon, which causes poor or absent peristalsis in the involved segment of the colon, accumulation of feces, and dilation of the bowl (megacolon)
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intestinal obstruction
partial or complete obstruction of the small or large bowel lumen
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mechanical intestinal obstruction
an obstruction that occurs when there is a blockage within the intestine from pressure on the intestinal walls
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nonmechanical intestinal obstruction
an obstruction that occurs when the intestinal peristalsis decreases or stops because of vascular or neuromuscular pathology
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intussusception
the sliding of the inner segment of intestine into another segment
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irritable bowel syndrome
chronic or periodic diarrhea alternating with constipation
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polyposis coli
a condition of multiple polyps in the large intestine
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volvulus
a twisting of the bowel on itself, causing intestinal obstruction
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fistula
an abnormal tubelike passage from a normal cavity or tube to a free surface or to another cavity
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anal fistula
a fistula near the anus that may open into the rectum
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hermorrhoids
dilated, tortuous (twisted) veins in the mucous membrane
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external hemorrhoids
- hermorrhoids that involve veins outside the anal sphincter
- they are usually not painful
- bleeding does not occur unless a hemorrhoidal vein ruptures or thromboses
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internal hemorrhoids
hemorrhoids that involve veins above the internal sphincter of the anus
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cirrhosis
- chronic liver disease characterized by the destruction of liver cells
- eventually leads to impaired liver function and jaundice
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hepatitis
inflammatory condition of the liver, characterized by jaundice, hepatomegaly, anorexia, abdominal and gastric discomfort, abnormal liver function, clay-colored stools, and tea-colored urine
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viral hepatitis
- inflammation of the liver caused by a virus
- marked by hepatic cells destruction, necrosis, and autolysis; leading to anorexia, jaundice, and hepatomegaly
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hepatitis A
- hepatitis caused by hepatitis A virus
- characterized by the slow onset of signs & symptoms
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hepatitis B
hepatitis caused by hepatitis B virus
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hepatitis C
- also known as non-A, non-B hepatitis
- transmitted largely by blood transfusion or percutaneous inoculation
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hepatitis D
- delta hepatitis
- a form of hepatitis that occurs only in patients infected with hepatitis B
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hepatitis E
- epidemic non-A, non-B hepatitis
- self-limited type of hepatitis, common in developing countries
- may occur after natural disasters because of fecally contaminated water or food
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pancreatitis
an inflammatory condition of the pancreas that may be acute or chronic
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acute pancreatitis
pancreatitis of sudden onset
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chronic pancreatitis
pancreatitis of slow progression or frequent recurrence
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cholelithiasis
the presence or formation of stones in the gallbladder, also known as gallstones
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achlorhydia
absence of hydrochloric acid in the gastric juice
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anorexia
lack or loss of appetite, resulting in the inability to eat
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ascites
abnormal accumulation of fluid in the peritoneal cavity
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borborygymus
an audible abdominal sound produced by hyperactive intestinal peristalsis
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cachexia
- a state of ill health, malnutrition, and wasting
- may occur in many chronic diseases, malignancies, and infections
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constipation
- a change in normal bowel habits characterized by decreased infrequent, difficult defecation or passage of hard, dry stools
- sluggish action of the bowels
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diarrhea
a change in bowel habits characterized by the frequent passage of loose, fluid, unformed stools
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dyspepsia
a vague feeling of epigastric discomfort, felt after eating
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flatus
air or gas in the intestine that is passed through the rectum
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hernia
a protrusion or projection of an organ or a part of an organ through the wall of the cavity that normally contains it
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femoral hernia
- a loop of intestine descends through the femoral canal into the groin
- surgical repair (herniorrhaphy) is the usual treatment
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hiatal hernia
protrusion of a portion of the stomach upward through the diaphragm, commonly producing no symptoms
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inguinal hernia
- a type of hernia in which a loop of intestine enters the inguinal canal
- in a man, it sometimes fills the entire scrotal sac
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umbilical hernia
a soft, skin-covered protrusion of intestine and omentum through a weakness in the abdominal wall around the umbilicus
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jaundice
a yellow discoloration of the skin, mucous membranes, and sclerae of the eyes, caused by higher than normal amounts of bilirubin in the blood
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melena
abnormal black tarry stool that has a distinctive odor and contains digested blood
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nausea
unpleasant wave-like sensation in the throat or abdomen, usually preceding vomiting
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pruritis ani
itching of varying intensity of the skin around the anus
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asteatorrhea
- higher than normal amounts of fat in the feces
- any condition in which fats are poorly absorbed by the small intestine
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barium enema (lower GI series)
- radiographic examination of the rectum and colon following administration of barium sulfate (radiopaque contrast medium) into the rectum
- this procedure is used for diagnosis of obstructions, tumors, or other abnormalities (i.e. ulcerative colitis)
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barium swallow (upper GI series)
radiographic examination of the esophagus, stomach, and small intestine following oral administration of barium sulfate (radiopaque contrast medium)
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cholangiography
radiographic examination for outlining the major bile ducts by intravenous injection or direct instillation of a radiopaque contrast medium
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intravenous cholangiography
in intravenous cholangiography, a contrast agent is injected slowly into the vein, and radiographs are taken of the region of the gallbladder
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percutaneous transhepatic cholangiography
a radiographic examination of the structure of the bile ducts
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oral cholecystography
a radiographic examination of the gallbladder after the ingestion of a contrast medium
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computed tomography
- a radiographic imaging modality that is more sensitive than a conventional x-ray examination
- a scanner and detector circle the patient's body, sending images to a computer, which allows the radiographer and physician to view any part of the body
- the image produced represents a detailed cross secretion of tissue structure
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abdominal CT
provides visualization of the internal organs of the abdomen, such as the gallbladder, liver, bile ducts, pancreas, kidneys, ureters, and bladder
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endoscopic retrograde cholangiopancreatography
direct radiographic visualization with a fiberoptic endoscope, including radiographic fibroscopy, to examine the size and the filling of the pancreatic and biliary ducts
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fluoroscopy
a radiographic technique for visually examining a part of the body or the function of an organ with a fluoroscope
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magnetic resonance imaging
imaging procedure that uses radiofrequency radiation as its source of energy
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ultrasonagraphy
- used of sound waves (ultrasound) to produce an image of an organ or tissue
- ultrasonic echoes are recorded as they strike tissues of different densities
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abdominal ultrasonography
ultrasonographic visualization of the internal organs of the abdomen, such as the liver, gallbladder, bile ducts, pancreas, kidneys, bladder, and ureters
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endoscopy
- visualization of the interior of organs and cavities of the body with an endoscope
- the organ being examined dictates the name of the endoscopic procedure
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upper GI endoscopy
visual examination of the esophaus (esophagoscopy), stomach (gastroscopy), and duodenum (duodenoscopy), using a lighted, fiberoptic endoscope
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lower GI endoscopy
visual examination of the colon (colonoscopy), sigmoid colon (sigmoidoscopy), rectum and anal canal (proctoscopy) using a lighted, fiberoptic endoscope
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stool culture
the plating of feces to one or more culture media to grow colonies of microorganisms for the purpose of identifying specific pathogen(s)
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stool guaiac / hemoccult
test performed on feces using the reagent gum guaiac to detect the presence of blood in the feces that is not apparent on visual inspection (obscure, hidden, or occult blood)
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liver function tests
- a batter of tests used to determine liver cell dysfunction and liver disease
- alanine aminotransferase: blood test to measure the concentration of the enzyme ALT in the blood
- alkaline phosphatase: test to measure the concentration of the enzyme ALP in the blood; increased levels of ALP are found in liver disease
- aspartate aminotransferase: test to measure the concentration of the enzyme AST in the blood, which is released following damage to cells, particularly cardiac muscle and liver cells
- gamma glutamyltransferase: blood test to determine liver cell dysfunction and to detect alchol-induced liver disease
- bilirubin: test to measure the bilirubin concentration in the blood
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biopsy
removal of a small piece of living tissue for microscopic examination, usually to establish or confirm a diagnosis, estimate prognosis, or follow the course of a disease
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aspiration
removal of living tissue, for microscopic examination, by suction through a fine needle attached to a syringe
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liver aspiration
a special needle is introduced into the liver under local anesthesia to obtain a specimen for pathological examination
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needle aspiration
removal of tissue for microscopic examination by use of a needle, usually attached to a syringe
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anastomosis
surgical connection between two vessels; surgical joining of two ducts, blood vessels, or bowel segments to allow flow from one to another
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ileorectal anastomosis
connection between the ileum and rectum after total colectomy as is sometimes performed in the treatment of ulcerative colitis
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intestinal anastomosis
connection of two portions of the intestines, also called eneteroenterostomy
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cheilorrhaphy
surgical procedure that sutures the lip, such as in the repair of a congenitally cleft lip or a lacterated lip
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colostomy
surgical creation of an artificial anus on the abdominal wall by incising the colon and drawing it out to the surface through which feces will be expelled into a disposable bag
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hemorrhoidectomy
excision of one or more hemorrhoids
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paracentesis
surgical puncture of the peritoneal cavity (abdomen) to withdraw fluid
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gastric lavage
washing out of the stomach; used to empty the stomach when the contents are irritating, as in prolonged postanesthetic vomiting and some cases of regurgitant vomiting in acute intestinal obstruction
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nasogastric intubation
insertion of a nasogastric tube through the nose into the stomach to relieve gastric distension by removing gas, gastric secretions, or food; to instill medication, food, or fluids; or to obtain a specimen for laboratory analysis
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antacids
drugs that exert a therapeutic effect by neutralizing acid, especially in the stomach and duodenum
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antidiarrheals
drugs that relieve diarrhea either by absorbing the excess fluids that cause diarrhea or by lessening intestinal motility (slowing the movement of fecal material through the intestine), allowing more time for absorption of water
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antiemetics / antinauseants
drugs that prevent or relieve nausea and vomiting, mainly by acting on brain control centers to stop nerve impulses
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antiflatulents
drugs that reduce the feeling of gaseousness and flatulences accompanying indigestion
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bismuth compounds
agents that may be used for protective effects in ulcer disease and for mild to moderate diarrhea
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emetics
agents that induce vomiting, especially in cases of poisoning
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H2 blockers
drugs used to treat ulcers and gastroesophageal reflux disease by blocking the release of acid in the gastric parietal cells, which line the stomach
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mucosal protective agents
agents that act topically on the ulcer surface and bind directly to necrotic areas, forming a protective layer over the ulcer, allowing it to heal
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prostaglandins
substances that inhibit acid secretion and stimulate the production of protective mucus bicarbonate
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proton pump inhibitors
- specifically inhibit acid production
- used in the treatment of peptic ulcers and gastroesophageal reflux disease
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GER
gastroesophageal reflux
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GERD
gastroesophageal reflux disease
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IBS
irritable bowel syndrome
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PE
- physical examination
- pulmonary embolism
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ABC
aspiration biopsy cytology
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ALT
- alanine aminotransferase (elevated in liver & heart disease)
- enzyme tests of liver function
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AST
- angiotensin sensitivity test
- aspartate aminotransferase
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alk phos
alkaline phosphatase
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CT scan
computed tomography scan
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CAT scan
x-ray images in a cross-sectional view
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EGD
esophagogastroduodenoscopy
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ERCP
endoscopic retrograde cholangiopancreatography
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ERS
endoscopic retrograde sphincterectomy
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ESWL
extracorporeal shock-wave lithotripsy
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GGT
gamma glutamyltransferase
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GTT
glucose tolerance test
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IVC
intravenous cholangiography
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LFT
liver function test(s)
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OCG
oral cholecystography
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PO
- postoperative
- period of onset
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UGI
upper gastrointestinal tract (x-ray)
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MRI
magnetic resonance imaging
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ac
before meals (ante cibum)
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pc, pp
after meals (postprandial)
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qh
- every hour
- q#h - every # hrs
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