GI Flashcards
Indications for Endoscopy
Weight loss
Blood in stool
Anemia
Dx test for anatomical issue in esophagus
Barium then EGD if +
Dx test for physiological issue in esophagus
Barium then EGD if -
Dx test for mucosal issue in esophagus
EGD
Dx test for Acid issue in esophagus
24hr pH
Dx test for small bowel issue
Capsule endoscopy
Features of pts with achalasia
Under 50 Both solids and liquids No smoking or alcohol Halitosis Regurgitation
Most accurate test for Achalasia
Manometry
What is Dx with Bx in esophagus
Barrett
Cancer
Features of pts with esophageal cancer
Over 50
Solids then liquids
Alcohol and smoking
>5-10 yrs of GERD sx
Best initial test for esophageal CA
Barium
Rx esophageal CA
Resection along with chemo and radiation
Stent if cannot resect (sx rx)
2 forms of esophageal spasms
Diffuse esophageal spasm
Nutcracker esophagus
Precipitate esophageal spasm
Drinking cold liquid
Best initial test esophageal spasm
Esophogram
Most accurate test for esophageal spasm
Manometry (also used to distinguish types)
Rx esophageal spasm
CCB and nitrates
Dysphagia in HIV w/ CD4
Fluconazole
EGD if rx fails
Rare sequelae of Plummer-Vinson
Squamous cell carcinoma
Rx Schatzki ring
Pneumatic dilation
Main Sx in Schatzki ring
Intermittent dysphagia of solids
Rx in Plummer-Vinson
Fe replacement
Cause of Schatzki ring
Acid reflux
Associated with hiatial hernia
Best test for Zenker
Barium
Rx Zenker
Surgery
Pills causing esophagitis
Doxy
Alendronate
KCl
Pt presentation for schleroderma esophagitis
Reflux with hx of scleroderma or progressive systemic sclerosis
When is Manometry used
Achalasia
Scleroderma
Spasm
Management of scleroderma
PPIs
Problem with esophagus in scleroderma
LES doesn’t close
Sx difference between mallory-weiss and borhaave
M-W = blood Borhaave = no blood
What is Borhaave
Full penetration of esophagus
M-W is only mucosal tear
MCC epigastric pain
Non-ulcer dyspepsia
Hx Pain worse with food
Gastric ulcer
Hx Pain better with food
Duodenal ulcer
Hx Weight loss
Cancer, gastric ulcer
Hx Tenderness
Pancreatitis
Hx Bad taste, cough, hoarse
Gastroesophageal reflux
Hx Diabetes, bloating
Gastroparesis
No Hx
Non-ulcer dyspepsia
Only way to understand etiology of epigastric pain from ulcer
EGD
AE of H2 blockers
Tachyphylaxis
What is GERD
Inappropriate relaxation of LES
Complaints in GERD
Sore throate
Metallic taste
Hoarseness
Cough
EGD in GERD
Signs of obstruction
Weight loss
Anemia or heme + stool
>5-10 yrs of sx
Confirm etiology of GERD if Dx is not clear
24hr pH monitoring
Rx GERD
Weight loss (BEST)
Avoid EtOH, nicotine, caffeine, chocolate, peppermint
NO eating 3hrs before bed
Elevate head of bed 6-8 inches
What does peppermint do in GERD
Dilate LES
Rx mild/intermittent sx in GERD
Liquid antacids
H2 blockers
Rx persistent sx/erosive esophagitis
PPIs for 4-6wks
Surgical optionsin GERD (when meds fail)
Nissen fundoplication
Endocinch
Heat/radiation to scar
Should be avoided after nissen fundoplication
Carbonated beverages
Rx Simethicone then NG
How long does columnar metaplasia take to develop with reflux
5yrs
Only way to be certain of Barrett
Bx
Rate of progression of Barrett to CA
0.5% of Barrett per year
Rx Barrett
PPIs and rescope every 2-3yrs
Rx low-grade dysplasia
PPIs and rescope every 6-12 months
Rx high grade dysplasia
Ablation - Photodynamic therapy, radiofrequency, mucosal resection
Main causes of gastritis
Alcohol NSAIDs H. pylori Portal HTN Stress - Burns, trauma, sepsis, multiorgan failure
Cause of atrophic gastritis
B12 deficiency
MC presentation of gastritis
Painless GI bleeding
Volume of blood loss in coffee ground emesis
5-10mL
Volume of blood loss in heme+ stool
5-10mL
Volume of blood loss in melena
50-100mL
Most accurate test for gastritis
EGD
Problem with serology for H. pylori
Only works on 1st dx
Problem with urea breath test
Only good to test for eradication
Problem with sucralfate
Only works in acidic environment
Who can’t get sucralfate (AlOH)
Dialysis pts cannot excrete Al containing compounds
Who gets stress ulcer prophylaxis
Mechanic ventilation
Burns
Head trauma
Coagulopathy
Most accurate test for H. pylori
EGD with Bx
Less common causes of PUD
Burns Head trauma Crohn Gastric CA ZES
Effect of alcohol/smoking of gastric ulcers
Delay healing
Most accurate test for PUD
Upper endoscoply
Only method for detecting gastric CA
EGD
H.pylori presence in PUD by location
Duodenal - 80-90%
Gastric - 50-70%
What can you add to ABX rx if ulcer is treatment resistant
Bismuth
MCC Rx failure for ulcers
Nonadherence
Alcohol
Tobacco
NSAIDs
What percentage of gastric ulcers are associated with CA
4
When to scope pts with dyspepsia
>45-55 Alarm sx (dysphagia, wt loss, anemia)
Rx non-ulcer dyspepsia
Empirically with PPIs if
What is non-ulcer dyspepsia
Epigastric pain with normal EGD
Features of gastrinoma
Large (>1-2cm)
Recurrent (H.pylori eradicated)
Distal (in duodenum)
Multiple
Why are gastrinomas associated with diarrhea
Acid inactivates lipase
Most accurate diagnostic test for ZES
High gastrin levels with high gastric acidity
High gastrin levels despite high gastric acid output
Persistent high gastrin despite injecting secretin
Single most accurate test for gastrinoma
Response to secretin
Exclude metastatic disease in pancreas with dx of gastrinoma
Somatostatin receptor scintigraphy (nuclear octreotide scan) combined with endoscopic U/S if CT and MRI nl
Rx ZES
Surgery
Mets get lifelong PPI w/o resection
Meds to improve gut motility in diabetic gastroparesis
Erythromycin
Metoclopromide
Most accurate test for diabetic gastroparesis
Nuclear gastric emptying study
Why isn’t D5W used in fluid resucitation
Doesn’t stay in the vascular space
MCC UGI bleed
Ulcer
MCC LGI bleed
Diverticulosis followed by angiodysplasia
Orthostasis
> 10 rise in pulse lying to sitting or standing
OR
20pt drop in SBP when sitting up
Percent of blood loss in orthostasis
15-20%
Percent of blood loss when HR>100
30%