Gastro Flashcards
Secreted by parietal cells
Hydrochloric acid
Digests proteins secreted by chief cells
Pepsin
Stimulates stomach acid secretion and motility.
secreted by G cells
Gastrin
directly stimulates parietal cells to secrete Hydrochloric acid
Acetylcholine
Inhibits parietal cell gastric secretion and buffers acid chime leaving the stomach
Secretin
Stimulates bile release and amylase/lipase for fat and protein breakdown
Cholecystokinin
Suppresses the release of GI hormones: inhibits secretion of gastrin
Somatostatin
Produced by pancreatic Alpha cells
Beta cells
Glucagon
Insulin
Water soluble contrast used in upper GI study when perforation is suspected
Gastrografin (Replacing Barium)
Caused MC by GERD: common in immunocompromised with candida, CMV or HSV. Radiation therapy
Painful swallowing. RF- Prego, ETOH, SMoke, Chocolate, spicy food, Meds. Dx- Multiple corrugated rings
Esophagitis
Linear white plaques esophagitis and Tx?
Candida
Tx- PO Fluconazole
small deep ulcers esophagitis and Tx?
HSV
Tx- Acyclovir
Large superficial shallow ulcers esophagitis?
CMV
Tx- Ganciclovir
Pill induced esophagitis MCC
NSAIDS, Bisphosphonates, Potassium chloride, Iron pills, BBs, CCBs.
Incompetent or transient LES relaxation MCC. Heartburn is hallmark. cough at night, dysphagia, water brash.
Dx- and Tx
GERD
DX- 24 hr pH GS: Endscopy 1st.
Tx- Lifestyle mods, H2 Antagonist, PPI, Fundoplication
GERD: _____ cells replaced by _______ cells can lead to what kind of carcinoma?
Squamous to Columnar cells (Barret’s Esophagus)
Adenocarcinoma
Increased LES tone 2T loss of Aurbach’s Plexus. dysphagia to both solids and liquids. –> weightloss.
Dx- GS is ______ and esophagram shows (CXR)
Tx-?
Achalasia
Dx- GS is Manometry: Bird’s Beak
Tx- Botulinum Inj. 6-12 mos, nitrates, CCBs, Sx
Excessive contraction during peristalsis. Normal Esophagram and EGD
Dx-
Tx-
Nutcracker Esophagus
Dx- Manometry
Tx- CCBs, Nitrates, Botox, sildenafil
Dysphagia, regurgitation of undigested food, choking sensation, halitosis.
Dx-
Tx-
Zenker’s Dicerticulum
Dx- Barium Esophagram
Tx- Diverticulectomy Sx
Full thickness rupture of the distal esophagus. 2T repeated forceful vomiting.
Retrosternal pain worse with deep breath/swallowing.
Dx- and Tx ?
Boerhave Syndrome
Dx- Ct scan/CXR
Tx- stable= Iv, Fluids, NPO, Abx, H2-a Severe= Sx
UGI bleeding from longitudinal mucosal laceration @ GE junction. 2T persistent retching. vomiting etoh/bulimia
Hematemesis after ETOH binge. Hydrophobia.
DX- and Tx?
Mallory-Weis tear
Dx- Upper endoscopy TOC
Tx- Supportive (Severe- Epi inj., Ligation, balloon)
lower esophageal constrictions/webs @ squamo-columnar jx. MC associated with Hiatal hernias
SCHATZKI Ring (Esophageal Web/Ring)
Caused by portal vein hypertension. MC RF is _______.
Upper GI bleed, hematemesis, melena, hematochezia
TX- 1. TOC? 2. Pharmaco DOC 3. Prevention
Esophageal Varices (Cirrhosis MC RF)
Tx- 1. Endoscopic ligation: 2. Octreotide 3. BBs (Prop-Nad)
MC type of hiatal Hernia
Sliding Type 95% (GE Junction + stomach slide)
(Rolling- (paraesophageal) Fundus of stomach protrudes through diaphragm.
MC Esophageal Neoplasm @ ____ 1/3?
Usually complication of GERD–> Barret’s DX-?
Adenocarcinoma: Upper 1/3
EGD with Bx
MCC of gastritis: 2nd MCC and 3rd?
Epigastric pain, NV, anorexia, hematemesis, melena.
DX- ?
#1 H. Pylori #2 NSAIDS #3 Acute stress
Dx- Endoscopy GS
H. Pylori positive Triple therapy
(CAP)
Clarithromycin
Amoxicillin
PPI
Burning, gnawing, hunger like epigastric pain, worse at night: worse/ food provoked 1-2 hours after meal
Gastric Ulcer Peptic Ulcer disease
Burning, gnawing, hunger like epigastric pain, worse at night: relieved with food, antacids.
Duodenal Ulcer Peptic Ulcer disease
H. Pylori Testing gold standard?
MC used? and which confirms eradication
Endoscopy with Biopsy
MC used= Urea Breath test Eradication= Stool Ag
Sudden onset severe diffuse abdominal pain. Rigid abdomen with rebound tenderness think______
MC?
Duodenal Ulcer perforation
Quadruple H. Pylori therapy?
BTM-P
Bismuth Subsalicylate, Tetracycline, Metronidazole, PPI
Medication forms viscous adhesive coat that protects and promotes healing of mucosa
Sucralfate
Medication used in Esophageal varices that is a somatostatin analog–> vasoconstriction of portal vein
Decreases Gastrin/ Reduces bleeding
Octreotide
Gastrin secreting neuroendocrine tumors–> gastric acid hypersecretion–> PUD Kissing Ulcers” both sides lumen
Dx and Tx
Zollinger-Ellison Syndrome
Dx- Increased Fasting Gastrin Levels + pH<2
Tx- Sx
MC Gastric carcinoma WW?
Most important RF is _____
Adenocarcinoma
H. Pylori
A sign of adenocarcinoma metastasis supraclavicular Lymph node is known as ?
Virchow’s Node
Type of bilirubin not soluble in water therefore sent to liver for excretion
Unconjugated Bilirubin (Indirect)
Water soluble Bilirubin that can be excreted through bile
When in excess gets cleared through urine as Urobilin.
(Urine- 1st needs conversion to urobilinogen in GI)
Conjugated Bilirubin (Direct)
Bilirubin without increased LFTs =
Familia Bilirubin D/O
Hereditary unconjugated (indirect) hyperbilirubinemia
Neonatal jaundice with progress to Kernicterus
Absent UGT= Type I
Crigler-Najjar Syndrome
Hereditary unconjugated (indirect) hyperbilirubinemia
Transient in periods of stress: “ Reduced UGT”=Mild
Gilbert’s Syndrome
Hereditary conjugated (direct) hyperbilirubinemia
Black liver on Biopsy
Dubin-Johnson syndrome
LFT Pattern of liver injury (Hepatocellular damage)
Increased ALT and AST
Which liver enzyme is more sensitive for liver disease
ALT
LFT Pattern for Cholestasis
Increased ALP and GGT (Bilirubin higher than both).
synthesis coagulation factors dependent on vitamin K
PT
LFT Pattern for ETOH hepatitis
AST:ALT 2:1 Ratio “Scotch” (AST <500)
ALT>AST (>1,000) you think?
Acute viral hepatitis (Chronic <500)
Abrupt RUQ/epigastric pain. Resolves slowly lasting 30-hours. Nausea precipitated by fatty foods or large meals
Dx? TX?
Cholelithiasis
Dx- US Tx- Elective cholecystectomy
Gallstones in the common bile duct assoc. w duct dilation.
Dx- DOC Tx-
Choledocholithiasis
Dx- ERCP TX-ERCP stone extraction
Obstruction of the Biliary tract –> to biliary tract infection. MC 2T E. Coli or Klebsiella. Charcot’s/Reynold
Labs: Increased ALP, GGT, and Bilirubin
Dx- Tx-?
Acute Cholangitis
Dx- CT (GS-ERCP) Tx- ABX + ERCP
Primary Choledocholithiasis pathophysiology cause
Stones originating @ CBD 2T Cystic Fibrosis
Secondary Choledocholithiasis pathophysiology cause
Passage of stones from GB into CBD (MC)
Inflammation/infection 2T gall bladder obstruction @ cystic duct. E.coli/Klebsiella MC.
(+) Murphy’s sign RUQ pain, precipitated by fatty/large meals. DX- Initial and GS Tx-
Cholecystitis
Dx- Initial=US “GS=HIDA scan” Tx- NPO, IV, ABX,Sx
Chronic cholecystitis Associated with gallstones–> ?
Strawberry GB –> Porcelain GB (Premalignant condition)