Gastroenterology Flashcards
45-y-o woman, BMI 35 with colicky abdominal pain in right upper quadrant that radiates to the shoulder, worse when eating fatty food. Dx, next step and tx?
Cholelithiasis
Next step: RUQ U/S (which would show gallstone)
Tx:
- Elective cholecystectomy
- If non-surgical candidate –> ursodeoxycholic acid
Patient with constant RUQ pain, (+) murphy sign, mild leucocytosis. Dx, next step and tx?
Cholecystitis
Next steps:
- RUQ U/S (Pericholecystic fluid, thickened wall, gallstones)
- If inconclusive U/S –> HIDA scan: failure to fill the gallbladder is a positive test
Tx:
- NPO, IVF, IV antibiotics (Ciprofloxacin + metronidazole; or ampicilin-gentamicin + metronidazole)
- Urgent cholecystectomy (within 72 hours)
- If non-surgical candidate –> cholecystostomy
Painful jaundice, murphy sign, mild leucocytosis, ↑AST, ↑ALT, ↑amylase. Dx, next step and tx?
Choledocholithiasis
Next steps:
- RUQ U/S showing dilated ducts
- Magnetic resonance cholangiopancreatography (MRCP)
Tx:
- NPO, IVF, IV antibiotics (Ciprofloxacin + metronidazole; or ampicilin-gentamicin + metronidazole)
- Urgent ERCP (Endoscopic Retrograde Cholangio-Pancreatography)
- Elective cholecystectomy
RUQ pain, fever, jaundice. Dx, next step and tx?
Cholangitis
Next steps:
- RUQ U/S showing dilated ducts
- Don’t do HIDA or MRCP
Tx:
- Emergent ERCP, which is both diagnostic and therapeutic
- NPO, IVF, IV antibiotics (Ciprofloxacin + metronidazole; or ampicilin-gentamicin + metronidazole)
- Urgent to elective cholecystectomy
Charcot triad?
RUQ pain
Fever
Jaundice
Dx: Cholangitis
Reynolds pentad?
RUQ pain
Fever
Jaundice
Hypotension
Altered mental status
Dx: Severe cholangitis
Can pip/tazo be used for gallbladder deases?
Don’t pick this in the test because it’s expensive and you would be overcovering for gram positives (o Organisms in biliary tree are gran negative rods and anaerobes)
Odynophagia, dysphagia + history of taking NSAIDS, Antibiotics (tetracyclins), Biphosphonades, or HAART. Dx, next step and treatment?
Pill induced esophagitis
Next step: EGD + Bx
Tx: Remove medication, time to heal, PPI
Odynophagia, dysphagia, oral thrush. Dx, next step and treatment?
Infectious esophagitis (Candida)
Next step: EGD + Bx
Tx: fluconazole or nystatin oral suspension
Odynophagia, dysphagia, oral vesicles on erythematous base in multiple stages of healing . Dx, next step and treatment?
Infectious esophagitis (HSV)
Next step: EGD + Bx
Tx: Valacyclovir or acyclovir
Odynophagia, dysphagia, CMV on EGD Bx. Treatment?
valganciclovir
Patient with history of Asthma, seasonal Allergies, Atopy (eczema) + Odynophagia, dysphagia. Dx, next step and treatment?
Eosinophilic esophagitis
Next step: EGD + Bx with > 15 eosinophils/high-power field
Tx:
- Trial of PPI x 6 if not on PPI before
- If on PPI before or trail fails–> Oral aerosolized steroids
Kid who by accident drink drain cleaner, hoorse or stridor (larynx burn), Drooling. Dx and next step?
Caustic esophagitis
Next step: Intubate!!! then EGD + Bx to determine the severity
Adult in a suicide attempt who drank drain cleaner, hoorse, drooling. Dx and next step?
Caustic esophagitis
Next step: Intubate!!! then EGD + Bx to determine the severity
Low severity caustic esophagitis management?
In early stages, NGT and lavage
Low severity: liquid diet
NEVER NEUTRALIZE THE pH
NEVER INDUSE EMESIS
High severity caustic esophagitis management?
In early stages, NGT and lavage
High severity: NPO x 72 hours and then repeat EGD
NEVER NEUTRALIZE THE pH
NEVER INDUSE EMESIS
Patient under 50, Dysphagia for solids and liquids.
Bird’s beak of barium sallow
Sustained LED contraction on manometry
Dx, next step, treatment and follow up?
Achalasia
Next step: EDG + Bx
Tx: Myotomy is the election tx
- Botulinum toxin only when non-surgical candidate
Follow up: treat iatrogenic GERD
Woman, Dysphagia for solids and liquids, Calcinosis, Reynold’s, Sclerodactyly, Telangiectasia, GERD.
Dx, next step, tx?
Scleroderma
Next steps:
- barium sallow–> LES wide open
- manometry –> No esophageal activity
- EGD + Bx
Tx: PPI
Patient with recurrent episodes of crushing retrosternal chest pain that betters with Nitroglycerin and CCB. Enzimes are always negative.
Dx, next step, tx?
Diffuse esophageal spasm
Next steps:
- Barium sallow–> Corkscrew esophagus
- Manometry–> diffuse uncoordinated contractions
- EGD + Bx
Tx:
• CCB
• Nitrates PRN
Patient with intermitent disphagia of solid food (big bites).
Dx, next step, tx?
Schatzki’s Ring
Next steps:
- Barium sallow-> narrow lumen
- EGD + Bx-> rule out cancer and shows the ring
Tx: Lyse the ring during EGD
Woman, Dysphagia for solids then liquids, Iron deficiency anemia.
Dx, next step, tx?
Plummer-Vinson
Next step:
- Barium sallow showing Esophageal webs (no need for EGD for Dx)
Tx:
• Iron
• Frequent EGD + Bx as screening tool for esophageal cancer
Old man, Halitosis, Regurgitation of undigested food, Dysphagia for solids then liquids.
Dx, next step, tx?
Zenker’s diverticulum
Next step:
- Barrium sallow
- EGD + Bx
Tx: Surgery
Long-lasting GERD, Progressive dysphagia, Weight loss
Barrium sallow–> symetric/circumferential loss of lumen
Dx and tx?
Stricture
Tx:
- High-dose PPI
- Dilation
Long-lasting GERD, Progressive dysphagia, Weight loss
Barrium sallow–> asymmetric loss of lumen
Dx?
Esophagus Adenocarcinoma
Patient with a history of alcohol consumption, a heavy smoker, Progressive dysphagia, Weight loss
Barrium sallow–> asymmetric loss of lumen
Dx?
Squamous cell carcinoma
Patient with Nocturnal asthma symptoms that are absent during day, coughing and hoarseness. Dx and next step?
GERD
Next step: PPI + lifestyle changes x 6 weeks
Patient with Burning chest pain, Worsens laying down and with spicy food, Nausea, Vomiting, Macrocytic Anemia, and Weight loss. Dx and next step?
GERD with alarm symptoms
Next step: EGD + Bx
GERD on EGD. Tx?
PPI
Intestinal metaplasia (Bartlett’s) on EGD. Tx?
↑PPI (BID) + Annual EGD
Dysplasia on EGD. Tx?
local ablation +PPI + annual EGD
Adenocarcinoma on EGD. Tx?
Resection/chemo + radiation
Patient with GERD who doesn’t tolerate PPI. Next step?
Surgery (Nissen fundoplication)
Patient with gnawing epigastralgia.
EGD: Single large ulcer on duodenum. Possible dx?
H. Pylori
Patient with gnawing epigastralgia.
EGD: Multiple shallow ulcers.
Possible dx?
NSAIDs
Patient with gnawing epigastralgia.
EGD: ulcers with necrotic base heaped margings
Possible dx?
Malignancy
Patient with gnawing epigastralgia and diarrhea.
EGD: Multiple refractory ulcers
Possible dx?
Gastrinoma/Zollinger-Ellison
Patient with dyspepsia and PUD. Never treated before for H. Pylori.
Best dx test?
Serology
Because never treated before and currently having Sx. If positive, treat immediately
Patient with dyspepsia and PUD. Treated before for H. Pylori.
Best dx test?
EGD + Bx (histology)
Not urease test. Histology it’s better
Patient who has finished treatment for H. Pylori. Test to confirm erradication?
Stool Ag
Treatment for H. Pylori?
Triple therapy
- Clarithromycin
- Amoxicillin (or metronidazole if allergic)
- PPI
Patient with refractory gastric ulcers and diarrhea.
Dx, next steps, tx?
Gastrinoma/Zollinger-Ellison
Next steps:
1. Gastrin level > 1600 (normal < 250)
•Between 250 and 2600, do a Secretin stimulation test
- Localize the tumor with an Somatostatin receptor Scintigraphy (SRS) (AKA, Octreotide scan)
Tx: resection
Complication of Gastrinoma/Zollinger-Ellison
Gastric malignancy
Diabetic patient with chronic nausea and vomiting, abdominal pain when eating and peripheral neuropathy. Dx, next step, tx?
Gastroparesis
Next steps:
- EGD to r/o ca, obstruction of outlet and GERD
- Emptying study: Positive if >60% on stomach after 2 hrs or > 10% after 4 hours
Tx: Avoid opiates, anticholinergics Manage blood glucose Prokinetic agents • Metoclopramide PO in chronic management • Erythromycin IV in acute management Low fiver, small volume meals
Tx of gastroparesis
Low fiver, small volume meal Avoid opiates, anticholinergics Manage blood glucose Prokinetic agents • Metoclopramide PO in chronic management • Erythromycin IV in acute management
Marihuana smoker with nausea and vomiting that last a few days, then disapears and then come again. Dx and tx?
Cyclic vomiting syndrome
Tx:
- Stop THC
- Metoclopramide or Erythromycin
Patient with early satiety, weight loss, nausea and vomiting. Dx, next step?
Gastric carcinoma
Next steps:
- EGD + Bx
- PET scan to stage
What is a MATLoma and tx?
Gastric lymphoma produced by H. Pylori. Treated with triple therapy: Clarithromycin, Amoxicillin (or metronidazole if allergic), and PPI
Watery diarrhea, 3rd world country, no boiling water. Likely cause of diarrhea?
Vibrio cholera
Patient who comes from a trip to central america and has watery diarrhea. Likely cause of diarrhea?
ETEC (Enterotoxigenic E. Coli)
Patient with watery diarrhea who was on a picnic, he ate egg salad and potato salad. Likely cause of diarrhea?
S. Aureus
Patient with watery diarrhea who ate at a Chinese buffet and ate reheated rice. Likely cause of diarrhea?
Bacillus cereus
Patient how was hiking and drank fresh water. Now has watery diarrhea. Likely cause of diarrhea?
Giardia
Patient with diarrhea, fever and abd pain. Ate raw chicken. Likely cause of diarrhea?
Salmonella
Patient with bloody diarrhea, fever and abd pain. Likely cause of diarrhea?
Entamoeba histolyctica
Patient with HIV/AIDS and diarrhea. Likely cause of diarrhea?
Cryptosporidium
What is the most common cause of bloody diarrhea ?
Campylobacter
Red flags in diarrhea?
Fever Severe dehydration Bloody stool Pus on stool Recent travel Duration of more than 3 days Severe abdominal pain Recent hospitalization History of IV antibiotics
Patient with bloody diarrhea, Fever, Severe dehydration,
Duration of more than 3 day, and Severe abdominal pain. Next step?
C. diff NAAT
Fecal leukocytes
Fecal occult blood
Ova + Parasites
Stable hospitalized patient witn watery smelly diarrhea. Dx, next step and tx?
C. Difficile
Next step: C. diff NAAT
Tx:
- Stop culprit ab
- IV fluids
- Vacomycin or fidaxomicin (MTZ only if these meds are not available)
Hospitalized patient witn watery smelly diarrhea, hypotensive, toxic megacolon, paralytic ileus, or an elevated lactate. Dx, next step and tx?
C. Difficile
Next step: C. diff NAAT
Tx:
- Stop culprit ab
- IV fluids
- ↑PO (or PR) Vancomycin + IV MTZ
Patient with bloody diarrhea, who a week after is pale, and has edema. • Petechiae and HTN on physical exam.
Dx, next step, and tx?
Hemolytic uremic syndrome
Next step:
- CBC
- Blood smear to confirm hemolytic anemia
- Renal function, uroanalysis
- Shigella toxic assay
Tx:
- Supportive
- Plasma exchange
Patient with diarrhea of > 4 weeks of duration. First differentials to think of?
Medications
Laxatives
Lactose deficency
C. Diff chronic infection
Patient with diarrhea of > 4 weeks of duration. Osm Gap < 50 Fecal WBC (-) Fecal RBC (-) Mucus (-) △ NPO No difference Nocturnal Sx (+) Fecal fat (-)
Type of diarrhea and differential?
Secretory
Differential:
- VIPoma
- Gastrinoma
- Carcinoid
- C- Diff
Patient with diarrhea of > 4 weeks of duration. Osm Gap > 100 Fecal WBC (-) Fecal RBC (-) Mucus (-) △ NPO Improves Nocturnal Sx (-) Fecal fat (+/-)
Type of diarrhea and differential?
Osmotic
Differential:
- Celiac
- Lactose def
- Malabsoption
Patient with diarrhea of > 4 weeks of duration.
Fecal WBC (+)
Fecal RBC (+)
Mucus (+)
Type of diarrhea and differential?
Inflammatory
DIfferential:
- Chron’s
- Ulcerative colitis
- Radiation colitis
- Diverticulosis
Patient with right-sided heart fibrosis, flushing, and chronich diarrhea. Dx and next step?
Carcinoid (Tumor in the liver that secretes serotonin into the portal veins)
Next step: Urinary 5 HIAA (metabolite of serotonin)
Folate. Place of absorption and sx of deficiency?
Duodenum
megaloblastic anemia
Iron. Place of absorption and sx of deficiency?
Duodenum
microcytic anemia
Calcium. Place of absorption and sx of deficiency?
Duodenum
osteoporosis
Vit A. Place of absorption and sx of deficiency?
Terminal ileum
night blindness
Vit D. Place of absorption and sx of deficiency?
Terminal ileum
osteoporosis
Vit E. Place of absorption and sx of deficiency?
Terminal ileum
nystagmus
Vit K. Place of absorption and sx of deficiency?
Terminal ileum
bleeding
Patient with Diarrhea, Distension, Weight loss, and Extremely itchy bumps and blisters that appear on both sides of the body, most often on the forearms near the elbows, as well as on knees and buttocks, and along the hairline.
Dx, next step and tx?
Celiac sprue
Next steps:
- Anti-transglutaminase (TTG) antibodies
- EGD + Bx= atrophic villi
Tx: 3-4 months of avoiding gluten: Avoid wheat, rye (centeno), oat, barley (cebada)
Diarrhea, Flatulence, Distension, No weight loss. Dx?
Lactose intolerance