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10 pharmmacological etiologies of pancreatitis
- glyburide
- sulfamethoxazole and trimethoprin
- statins
- hydrochlorothiazide
- ibuprofen
- tetracycline
- furosemide
- ACE-I/some ARBS
- corticosteroids
- estrogens
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etiology of AP top 4
- structural - gallstone disease & pancreatic tumors
- toxins - ethanol consumption, scorpion bites, medications (.1-2%)
- infections - bacterial, viral, parasitic
- trauma - ERCP
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clinical presentation of AP
- Abdominal pain
- N/V
- abdominal distention
- jaundice
- signs of systemic inflammation or necrosis
- low-grade fever
- HoTN
- tachycardia
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local complications of AP
- acute fluid collection
- pancreatic necrosis
- abscess
- pseudocyst
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systemic complications of AP
- cardiovascular
- renal
- hypovolemia
- pulmonary
- pleural effusion
- ARDS
- metabolic
- hemorrhagic
- CNS abnormalities
- altered mental status
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abdominal pain in AP
- Stabbing pain, sudden onset, persistent
- In alcoholic pts. the pain may be dull and less localized or not reported as a problem
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serum amylase in AP
- Serum amylase (25 -125 units/L)
- Rises within 6-12 hours of onset
- Usually more than 3x upper limit of normal (ULN)
- Returns to normal in 48-72 hours
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serum lipase in AP
- Serum lipase (0 – 110 units/L)
- Specific to pancreas
- Concentrations usually elevated in AP
- Persists longer than serum amylase elevations
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Indicators for severity of AP on admission
- Age >55 years
- White cell count >16,000 mm3
- Glucose >200 mg/dL
- Lactic dehydrogenase >350 IU/L
- AST >250 units/L
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Indicators for severity of AP within 48 hours
- Decrease in HCT >10%
- Increase in BUN >5 mg/dL
- Calcium <8 mg/dL
- PaO2 <60 mmHg
- Base deficit >4 mmol/L
- Fluid sequestration >6 L
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4 main goals of AP Tx
- Correct underlying predisposing factors if possible
- Replace fluids
- Relieve abdominal pain
- Minimize systemic complications
- Pancreatic necrosis & infection
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5 Tx approaches of AP
- Remove offending agent, if possible
- Withhold food or liquids
- Aggressive fluid resuscitationCorrect metabolic deficiency states
- Pain control, nutrition, antibiotics & surgical intervention
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first line pain control of AP
- Parenteral fentanyl
- Good safety profile
- Short acting agent
- Can be used in a PCA (patient controlled administration)
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second line pain control in AP
- Parenteral morphine
- Longer duration of action
- Can cause increased biliary pressure
- No evidence contraindicated in AP pts
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3 pharmacological therapy for AP
- Enteral nutrition
- If oral nutrition will be withheld > 1 week
- Stimulation of pancreatic enzyme secretion minimized if administered distally into jejunum
- Parenteral nutrition
- Begin if target rate of enteral feeding is not achieved within 48-72 hrs
- Withhold IV lipids if TG > 500 mg/dL
- Surgery
- ERCP, cholecystectomy, debridement of necrotic tissue
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Three approaches to decrease bacterial infections in acute necrotizing pancreatitis
- Enteral feeding
- Earlier is better
- Selective decontamination of the gut
- Non-absorable antibiotics to reduce number of bacteria available to translocate
- No RCTs to confirm this theory
- Prophylactic systemic antibiotics
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main difference between acute and chronic pancreatitis
acure only affects gastric secretions (exocrine) where chronic affects both; exocrine and endocrine
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Four clinically distinct stages of chronic pancreatitis
- Preclinical inflammatory stage
- Acute attacks resembling acute pancreatitis
- Intermittent or constant abdominal pain
- Burnout stage (diminished pain, malabsorption syndrome, diabetes)
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4 etiologies of chronic pancreatitis
- Toxic: alcohol (~70-80%); tobacco (dose dependent
- Metabolic: chronic hypercalcemia associated with hyperparathyroidism, chronic renal failure
- Obstructive: pancreatic duct obstruction (tumor)
- Idiopathic (~20%)
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3 hallmark clinical presentations of chronic pancreatitis
- abdominal pain
- fat malabsorption
- diabetes
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abdominal pain presentation of CP
- Consistent or episodic
- Dull
- Epigastric
- Radiating to the back
- Deep-seated
- Positional
- Nocturnal
- Unresponsive to medication
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clinical presentation of fat malabsorption in CP
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clinical presentation of diabetes in CP
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lab test of CP - amylase & lipase; WBC, fluids, electrolytes
- Serum amylase and lipase concentrations
- Usually within the normal reference range
- Elevated if pancreatic duct is blocked or pseudocyst is present
- WBC count, fluids, and electrolytes
- Usually remain normal
- Vomiting and diarrhea may cause fluid and electrolyte loss
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6 complicatons of CP
- Pancreatic pseudocysts
- Pleural effusions
- Pancreatic ascites
- Non-diabetic retinopathy
- Increased risk for pancreatic carcinoma
- Alcoholics 15x more likely than general pop.
- Increased mortality
- 20-year survival rate = 45%
- Generally due to other causes (CV disease, infection, malignancy)
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most common cause of death in CP
CV disease - people generally die from complications not CP itself
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4 main goals of Tx of CP
- Remove offending agent, if possible
- Control chronic abdominal pain
- Correct malabsorption syndrome with pancreatic enzymes
- Manage complications
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5 general approaches to Tx of CP
- Avoidance of alcohol
- Smoking cessation
- Small meals to reduce steatorrhea
- Dietary fat reduction (50-75 grams/day)
- Pharmacologic pain control
- Pancreatic enzyme supplementation
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3 analgesic therapies for CP
- Acetaminophen: Dosage should be limited to 2 grams daily, especially in those who continue to drink
- NSAIDs: Standard dosage regimens. Use with caution in patients at risk for upper GI bleeding and those with kidney dysfunction
- Tramadol: 50–100 mg every 4–6 hours, not to exceed 400 mg/day; has been shown to successfully treat CP, but at higher doses than what is approved in the U.S.
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2 general guidelines for analgesic therapy of CP
- Give before meals and schedule around the clock
- Oral before parenteral therapies
- Individualized treatment
- Lowest effective dose
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3 administration pearls of pancreatic enzyme therapy
- Acid suppressants may allow for fewer capsules needed at each meal
- Administer during or after a meal
- May be poured out into applesauce
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pancreatic enzyme dosing
- 25K-40K of lipase per meal
- 5-25K per snack, ▫OR more specifically
- 500 units/kg/meal or 72,000 units/meal if consuming >100g fat per day
- Do not exceed 10,000 units/kg/day
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2 therapies for malabsorption in CP
- Pancreatic enzymes
- Reduce pancreatic stimulation and diminish intraductal pressure
- Concentration delivered to duodenum 10% of normal maximal enzyme output (lipase, amylase, protease)
- Reduction in dietary fat
- <25 g/meal
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4 symptoms of alcoholism
- Craving
- Strong need, or urge, to drink
- Loss of Control
- Not being able to stop drinking once drinking has begun
- Physical Dependence
- Withdrawal symptoms after stopping drinking
- Tolerance
- Need to drink greater amounts of alcohol to get “high
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CAGE Questionnaire
- 1. Do you ever feel you need to CUT down your alcohol usage?
- 2. Have you ever been ANNOYED by others telling you that you drink too much?
- 3. Have you ever felt GUILTY about your drinking or something you did while drinking?
- 4. Do you ever have an EYE opener?
Yes to 2 or more questions suggests an increased likelihood of EtOh abuse
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how is alcoholism characterised
what happens when you don't have the alcohol rather than the number of drinks you have
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symptoms and onset of minor withdrawal - alcohol
- Tremulousness
- mild anxiety
- HA
- diaphoresis
- palpitations
- anorexia
- GI upset
6-36hrs
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symptoms and onset of seizures in alcohol withdrawl
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symptoms and onset of alcoholic hallucinosis of withdrawal
visual (occasionally audiorty or tactile) hallucinations
12-48hrs
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symptoms and onset of delirium tremors in withdrawal
- delirium
- tachycardia
- HTN
- agitation
- fever
- diaphoresis
48-96hrs
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Goals of Alcohol Detoxification
- Prevent and treat withdrawal symptoms, medical, and/or psychiatric complications
- Long-term abstinence after detox
- Entry into ongoing medical and alcohol-dependence treatment
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Supportive Care of detox
- Intravenous fluids
- Nutritional supplementation
- Thiamine
- Glucose
- MVI
- Folic acid
- Other electrolyte deficiencies
- Frequent clinical reassessment
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Pharmacologic Therapy of detox
- Benzodiazepines
- Many different meds, similar efficacy
- Longer-acting agents may be more effective in preventing seizures
- Consider potential for abuse
- Rapid onset of action (may increase abuse potential)
- Slower onset of action
- Diazepam, lorazepam, & chlordiazepoxide used most frequently
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Treatment Regimens of detox
- Fixed-Schedule Therapy
- Benzodiazepines given regularly at fixed dosing intervals
- Monitor patients & give additional meds when necessary
- Front Loading
- Frequent, high doses of medications given to treat early signs and symptoms of withdrawal
- Symptom-Triggered Therapy
- Medication given only when patient has symptoms
- Generally most recommended regimen
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which Tx regimen for alcohol detox tends to overtreat
fixed-schedule therapy
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which Tx regimen for alcohol detox tends to undertreat
front loading
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Treatment of Alcohol Withdrawal Seizures
- Do not require treatment with an anticonvulsant unless they progress to status epilepticus
- Supportive treatment
- Majority of seizures are self-limited and do not require medication
- History of withdrawal seizures à higher initial benzo dose and taper over 7-10 days
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Alcohol Dependence Treatment
- Naltrexone
- Acamprosate
- Disulfuram
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Naltrexone (Vivitrol) 6 features
- Competitive opioid antagonist
- Attenuates the reinforcing effects of alcohol
- Reduces relapses & # of drinking days
- CI: hepatitis or liver failure, active opioid use
- 50 mg/day or 380 mg monthly by IM injection
- Monitor LFTs monthly for first 3 months
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Acamprosate (Campral) 5 features
- Structural analog of GABA
- Combo with naltrexone
- CI: Severe renal impairment (creatinine clearance < 30 mL/min)
- Maintenance of abstinence: 666 mg orally TID
- More efficacious with naltrexone and pyschosocial interventions than Campral alone
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Disulfiram (Antabuse) 5 features
- Produces aversive reaction if patient drinks
- Inhibits aldehyde dehydrogenase à acetaldehyde accumulates
- Baseline LFTs
- 500 mg/day for 1-2 wks then decrease to 250 mg/day for duration of therapy
- MANY adverse effects
- Severe facial flushing, throbbing headache, nausea and vomiting, chest pain, palpitations, tachycardia, weakness, dizziness, blurred vision, confusion, and hypotension, etc.
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