GI Diseases (Exam II) Flashcards
What are general symptoms of esophageal diseases?
- Dysphagia
- Heartburn
- Regurgitation
- Chest pain
- Odynophagia
- Globus sensation
Differentiate dysphagia and odynophagia.
- Dysphagia - difficulty swallowing
- Odynophagia - painful swallowing
What is a normal LES (lower esophageal sphincter) resting tone?
29 mmHg
What is Achalasia?
What does it result in?
- Esophageal obstruction due to inadequate LES relaxation (usually from LES HTN).
- Reduced peristalsis and dilated espophagus
What is the biggest risk with achalasia?
How would anesthetic practices change for a achalasia patient?
- Aspiration
- NPO for 24-48 hours prior to Heller myotomy or POEM.
How is achalasia treated?
Through relief of obstruction (can’t fix peristalsis).
- Nitrates (low dose)
- CCBs (low dose)
- Botox
- Balloon Dilation
- Heller Myotomy (LES reduction)
- Per Oral endoscopic myotomy
How would a esophageal motility vs structural issue be delineated?
- Structural = difficulty w/ solids
- Motility = difficulty w/ solids & liquids.
How would a esophageal motility vs structural issue be delineated?
- Structural = difficulty w/ solids
- Motility = difficulty w/ solids & liquids.
What would an esophageal spasm look like under direct visualization?
- Corkscrew or rosary bead appearance.
What medications could be used to treat esophageal spasms?
- Nitroglycerin
- Trazodone
- Imipramine
- Sildenafil
What is an esophageal diverticulum?
What kinds are there?
Esophageal wall out-pouching
- Pharyngoesophageal (Zenker’s)
- Mid-esophageal
- Epiphrenic (supradiaphragmic)
What are the main symptoms of esophageal diverticula?
- Halitosis (bad breath)
- Dysphagia (worse with larger pockets)
What is the treatment for esophageal diverticula?
- Small - medium: nothing
- Medium - large: removal
What are anesthesia considerations and risks for esophageal diverticula?
- No cricoid pressure
- Avoid NGT
- Intubate w/ head elevated
- Aspiration risk
What type of hernia is depicted by 1 on the figure below?
Normal (no hernia)
What type of hernia is depicted by 2 on the figure below?
Sliding Hiatal hernia
What type of hernia is depicted by 3 on the figure below?
Paraesophageal Hiatal hernia
What types of cancer are normally seen with esophageal cancer?
Where are they located typically?
- Squamous cell carcinoma (mid-esophagus)
- Adenocarcinomas (distal esophagus)
What signs/symptoms are indicative of esophageal cancer?
- Progressive dysphagia
- Weight loss
- Pancytopenia
- Lung Injury
- Malnourishment/dehydration
What is the treatment for esophageal cancer?
- Esophagectomy
- Chemotherapy
- Radiation
What deficient LES pressure is typically seen with GERD?
13 mmHg
What typically causes GERD?
- LES hypotension
- GE junction abnormality (hiatal hernia)
What complications can occur with chronic GERD?
- Esophagitis
- Laryngopharyngeal reflux
- Recurrent pulmonary aspiration (chronic cough)
What treatments are used for GERD?
- Lifestyle modifications
- PPIs > H2 antagonists
- Niessen fundiplocation
What are anesthesia considerations for GERD patients?
Manage Aspiration risk
- Ranitidine > cimetidine
- PPI’s
- Na⁺ citrate + reglan
- RSI + Cricoid pressure recommended.
What is peptic ulcer disease (PUD) ?
How does it present and what causes it?
- Ulcers of mucosal lining of stomach or duodenum causing a burning epigastric pain; caused by H. Pylori decreasing normal gastric mucosa HCO₃⁻ .
- H. Pylori + NSAIDs.
Who is at greater risk for PUD?
- Alcoholics
- Elderly
- Malnourished
What significant risk factors come from untreated PUD?
- Bleeding
- Peritonitis → sepsis
- Dehydration
- Perforation
What is the mortality risk of bleeding from PUD?
- 10 - 20%
What sort of perforation risk is conferred from untreated PUD?
What symptom is seen with perforation?
- 10% risk
- Sudden and severe epigastric pain
What drugs (along with abbreviated MOA’s) are used to treat PUD?
- Antacids (OTC relief of dyspepsia)
- H2 receptor antagonists (ranitidine & famotidine are better than cimetidine)
- PPI’s
- Prostaglandin Analogues (Misoprostol maintains mucosal integrity)
- Cytoprotective agents (Sucralfate creates chemical barrier)
How is H. Pylori treated?
- PPI + 2 ABX for 14 days
Which antibiotics are used for H. Pylori treatment?
- Clarithromycin and amoxicillin or metronidazole.
What is post-gastrectomy dumping syndrome?
- Release of GI vasoactive hormones from pyloric sphincter dysfunction causing food to move from the stomach into small bowel too early.
Differentiate Early vs Late Dumping syndrome.
- Early - lots of symptoms (cramping, ↓BP, N/V/D, etc)
- Late - Hypoglycemia
What is the treatment for dumping syndrome?
- Dietary modifications
- Octreotide
What is ulcerative colitis?
What are all the signs/symptoms?
- Mucosal disease involving all or most of the colon to rectum.
- Bleeding, tenesmus, N/V/D, fever, and weight loss.
What is tenesmus?
- Tenesmus = Urge to poop
What major complications can occur with severe ulcerative colitis ?
- Massive hemmorrhage
- Toxic megacolon
- Obstruction
- Perforation
What is the surgical treatment for ulcerative colitis?
- Total proctocolectomy
What is Crohn’s disease?
What are the symptoms?
- Acute/Chronic bowel inflammation
- Weight loss, inflammatory mass, bowel spasm, steatorrhea, & stricture formation.
What anatomical feature separates the small and large intestine?
Ileocecal valve
What surgical treatment exists for severe Crohn’s disease?
- Bowel resection
- Proctocolectomy
What medical treatment exists for mild-moderate IBS?
What meds are used in severe cases?
- Normal cases: 5-ASA, glucocorticoids, ciprofloxacin and metronidazole.
- Severe cases: Azathioprine & 6MP or methotrexate & cyclosporine
What organs are a part of the foregut?
- Thymus
- Esophagus
- Lungs
- Stomach
- Duodenum
- Pancreas
What organs are a part of the midgut?
- Appendix
- Ileum
- Cecum
- Ascending Colon
What organs are a part of the hindgut?
- Distal large intestine
- Rectum
Less than _____% of carcinoid tumors originate in the lung tissue.
What “gut” are the lungs located in?
- 25%
- Foregut
What do carcinoid tumors secrete?
- Insulin
- Histamine
- Serotonin
GI peptides and/or vasoactive substances
Compare/contrast serotonin secretion from all parts of the gut.
- Foregut - Low serotonin secretion
- Midgut - High serotonin secretion
- Hindgut - Rare serotonin secretion
Which part of the gut is prone to development of carcinoid syndrome?
- Midgut
Foregut is atypical, hindgut is rare.
What is carcinoid crisis/syndrome?
What are the signs & symptoms?
- Release of serotonin and/or histamine from carcinoid tumor.
- Flushing, diarrhea, ↓↑BP, bronchostriction/wheezing.
What symptoms commonly present with small intestine carcinoid tumor?
- Abdominal pain (51%)
- Intestinal obstruction (31%)
What symptoms commonly present with rectal carcinoid tumors?
- Bleeding (39%)
What symptoms commonly present with bronchus carcinoid tumors?
- Asymptomatic (31%)
Where are metastases from carcinoid tumors most often found?
What is the presenting symptom?
- Liver; found via hepatomegaly
What most often provokes carcinoid crisis?
- Biopsy of tumor
- Chemo
- Stress
What drugs may provoke mediator release (serotonin, histamine, etc) from carcinoid tumors?
- Succinylcholine
- Atracurium
- Epi/NE
- Dopamine
- Isoproterenol
- Thiopental
What drugs are used in the treatment of carcinoid tumor crisis?
- 5HT blockers
- H-antagonists
- Somatostatin analogues (Octreotide)
- Ipratropium
How do somatostatin analogues treat carcinoid tumor patients?
- Prevention of Carcinoid Crisis
What are the causes of acute pancreatitis?
- Gallstones & EtOH abuse (60-80% of cases)
- AIDS
- Hyperparathyroidism
- Trauma
What lab values indicate acute pancreatitis?
- ↑ serum amylase & lipase
What do the Ranson criteria indicate?
What would the below indicate:
- 0-2 criteria?
- 3-4 criteria?
- 5-6 criteria?
- 7-8 criteria?
- Ranson Criteria indicate severity & mortality of acute pancreatitis.
- 0-2 = <5% mortality
- 3-4 = 20% mortality
- 5-6 = 40% mortality
- 7-8 ≈ 100% mortality
What are treatments for acute pancreatitis?
- Aggressive IV fluids
- Colloids
- NPO
- Enteral/TPN
- NGT suction
- Pain management
- Gallstone removal
What are signs/symptoms of chronic pancreatitis?
- Post-prandial epigastric pain
- Emaciated
- Steatorrhea
- DM
What conditions put one at risk of chronic pancreatitis?
- Chronic EtOH
- Cystic fibrosis (?)
- Hyperparathyroidism
What’s the number one cause of upper gastric GI bleeding? Number 2?
- Varices
- Peptic Ulcer Disease
Where are bleeding uclers most often found in peptic ulcer disease?
- Duodenal (36%)
- Gastric (24%)
What is the most common cause of lower GI bleeding?
- Colonic Diverticulosis (41%)
What characterizes initial acute upper GI bleeding?
- ↓BP and ↑HR w/ 25% or more blood loss
- HCT normal at beginning
- Anemia
What are signs of chronic upper GI bleeding?
- Orthostatic hypotension from Hct <30%
- BUN >40mg/dL
What anesthetic technique should be employed for upper GI bleeding?
- RSI (rapid sequence intubation)
In patients with carcinoid tumors, how early should octreotide be administered to prevent crisis during surgery:
A. 4 hours
B. 24 hours
C. 12 hours
D. 8 hours
B. 24 hours