GI Flashcards
Peptic Ulcer Dz Causes
Causes:
- H. Pylori (90% duodenal ulcers, 75% gastric ulcers)
- NSAIDS & Glucocorticoids
- More common in men 3:1
- >1/2 PPD smkr
- Alcohol and other dietary factors do NOT cause PUD
- Stress?
PUD Signs / Symptoms
- Gnawing epigastric pain
- Relief with eating (duodenal) “RED”
- Pain worsens with eating (gastric) “PEG”
PUD Physical Findings
- Mild epigastric tenderness
- GI Bleeding (20%) Melena, hematemesis, coffee-ground emesis (ususally duodenal ulcer)
- Perforation (5-10%) severe epigastric pain, board-like abd, quiet bowel sounds, rigidity, free air
Are duodenal ulcers more common in the young or the old?
- Duodenal=Young “DIY”
- Gastric=OLD “GO”
Are duodenal ulcers located in the fundus or the antrum of the stomach?
Antrum
3 causes of Perforation
- PUD
- Ruptured Appendix
- Ruptured Diverticula
Melena Definition
Blak, tarry stools
PUD Diagnostics
- Anemia on CBC
- H.Pylori testing
- Consider endoscopy after 6-8 weeks of tx
What time frame should endoscopy be considered for PUD?
After 2-8 weeks of treatment
First line PUD Out-pt Management
H2Antagonists - take at night
- Cimetadine/ tagamet 800mg
- Ranitidine/ zantac 300 mg
- Famotidine/ pepcid 40mg
- Nizatidine/ axid 300mg
Increase to BID then if no improvement, change to PPI
Second Line Out-Pt PUD Management
PPI’s - 30 min before meals in the morning
- Lansoprazole/ Prevacid 15mg
- Rabeprazole/ Aciphex 20mg
- Omeprazole/ Protonix 40mg
- Dexlansoprazole / Dexilant 30mg
- Esmoprazole / Nexium 20mg
List common PPI’s
Lansoprazole
Rabeprazole
Pantoprazole
Omeprazole
*give 30 min before meals*
Mucosal Protective Agents
Give 2 hrs apart from other medications
- Sucralfate 1 gm QID /Carafate requires acidic environment -avoid antacids and H2 blockers
- Bismuth subsalicylate (Pepto-bismol) -tx traveler’s diarrhea and gastroenteritis, direct action against H.Pylori, promotes prostaglandin production, stimulates gastric bicarbonate
- Mistoprostol / Cytotec QID with food - pt’s with RA, prophylaxis against NSAID ulcers, may stimulate uterine contraction and induce abortion
- Antacids- local help with heartburn symptoms, does not reduce gastric acidity
ABD Conditions by Quadrant
LLQ- diverticulitis
RUQ- gallbladder
RLQ-appendix
List common H2 receptor antagonists
Cimetidine
Ranitidine
Famotidine
Nizatidine
*Give at night*
What test is used for H.Pylori?
Breath test
H.Pylori Eradication Therapy Resistance
*Must use combination therapy*
Resistance develops quickly to metronidazole/flagyl and clarithromycin/ biaxin
Does not develop quickly to amoxicillin or tetracycline
H.Pylori Therapy ATB Options
2 ATB’s + either a PPI OR bismuth
- ATB are BID dosing (AOC, MOC, MOA)
A moxicillin + omeprazole + clarithromycin x 7 days
O meprazole
C larithromycin
MOC (Metronidazole + omeprazole+clarithromycin x 7 days)
O meprazole
A moxicllin x 7-14 days
H. pylori therapy Bismuth regimens
Bismuth regimens are QID dosing
Bismuth 2 tabs QID
Metronidazole 250mg QID
Tetracycline 500mg QID
OR
BMT + omeprazole- above regimen +omeprazole 20mg BID x 7 days
What is the recommended anti-ulcer therapy duration after H.Pylori treatment?
Duodenal= Omeprazole or lansoprazole for additional 7 weeks
H2 blockers or sucralfate for 6-8 weeks
What medication is associated with a decrease in nosocomial PNA?
Carafate
What condition can lead to esophageal cancer?
Untreated GERD => Barrett’s esophagus=> cancer
Which mucosal protective agent is used in RA pt’s as prophylaxis against NSAID induced ulcers?
Misoprostol/Cytotec
Which mucosal protective agent has direct effects against
H. Pylori?
Bismuth subsalicylate
When is FFP indicated in PUD/Bleeding ulcers?
When coagulopathy is present
In-Hospital Managment PUD/Bleeding Ulcers/Perf
- IV access, begin fluids, blood products
- O2
- Endoscopy, GI angio
- Urinary cath
- NPO/ NG tube fore gastric lavage (bleeding stops spontaneously in 80% of cases)
- XRays show free air in 75% of cases
- Monitor abd assessment - quiet, rigid with rebound tenderness
- IV H2 blockers
- If coagulopathy present, give FFP, monitor PT,PTT, INR
- If thrombocytopenia <50,000, transuse plts
- GI surgical eval-scope
GERD
Characterized by reflux of gastric contents into the esophagus
Causes:
- Incompetent lower esophageal sphincter (LES)
- delayed gastric emptying
GERD Signs/ Symptoms
- Retrosternal burning
- Bitter taste in mouth
- Belching, hiccoughs, dysphagia
- Excessive salivation
- Frerquently occurs at night
- Relieved by sitting up, antacids, water, food
GERD Diagnositcs
Consider referral for EGD
R/o Barrett’s esophagus, PUD
GERD Management
Non-pharm:
- Elevate HOB
- Avoid triggers: alcohol, caffiene, spices, peppermint
- stop smoking
- Weight reduction if obese
Pharm:
- Antacids PRN
- H2 blockers in high doses at night or BID
- PPI if H2 ineffective
- GI/Surg consult PRN
List 3 causes of Hepatitis
Inflammation of the iver with resultant liver dysfunction
Causes:
- Viral
- Autoimmune
- Alcoholic
Which viral type of hepatitis is bad in pregnancy?
Type E=endemic
Hepatitis A
A=Ass
Enteral virus, transmitted via the fecal oral route and rarely parenterally
- Contaminated water and food, intimate contact
During what timeframe are blood and stool infectious in
Hep A?
Blood and stool are infectious during 2-6 week incubation period
Which types of hepatitis have an available vaccine?
A&B
How is Hepatitis B transmitted?
B=Blood
Blood borne, DNA virus in body fluids, transmitted via blood and sexual activity and mother to fetus
How is Hep C transmitted?
C=Contaminated needles
Blood borne, RNA virus, 50% tranmitted via IV drug use
List symptoms in the pre-icteric phase of Hepatitis
- Fatigue
- Malaise
- Anorexia
- N/V
- Aversion to smoking/alcohol
List symptoms in Icteric phase of Hepatitis
- Weight loss
- Jaundice
- RUQ abd pain
- Clay colored stool
- Dark urine
- Low grade fever
- Hepatosplenomegaly
Wht findings might be seen in UA of pt’s with hepatitis?
Proteinuria
Bilirubinuria
What are AST/ALT findings in hepatitis?
Elevated 500-2000
Hep A serology findings in Active disease
Anti-HAV, IgM
Recovered Hep A serology findings
Anti-HAV, IgG
HAV-IgG indictes what?
Previous exposure and immunity
What is the first evidence of HBV infection?
HBsAg
Remains positive in asymptomatic carriers and chronic Hep B
Which marker indicates highly infectious sera in Hep B?
HBeAg
List markers of Active HBV
HBsAg
HBeAg
IgM
List markers of Chronic HBV infection
Anti-HBe (indicates decreased infectivity)
IgM
IgG
List markers of Recovered HBV
Anti-HBc
Anti-HBsAg
Which test is used to differentiate prior exposure from current viremia for Hep C?
PCR
List serology for Acute and Chronic HCV
Anti-HCV
HCV RNA
What drug is used for sedation in hepatits patients?
Oxazepam (serax)
List general tx strategies for hepatitis
Rest during active phase
Increase fluids to 3-4 liters per day
No ETOH or other drugs detoxed by liver
No protein diet
Vit K if INR>1.5
Lactulose for elevated ammonia
Is diverticulits more common in women or men?
Women
What diet is associated with diverticulits?
Low fiber
Wht bowel symptoms might be found in diverticulitis?
Constipation or loose stools
Name quadrant associated with diverticultis
LLQ
Pts with perforation have perionteal signs
Diagnostic testing consideration in diverticultis
- Stool heme is present in 25%
- Sigmoidoscopy shows inflammed mucosa
- CT to eval abscess
- XR for all pts to eval for free air
List in-pt management strategies for diverticultis
- NPO
- IVF
- IV ATB
- Tx as with