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South College-Pharm Week 6
GI Lectures
133
Other
Graduate
02/19/2009

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Term
cirrhosis
Definition
defined as a diffuse process characterized by fibrosis and a conversion of the normal hepatic architecture into structurally abnormal nodes
Term
portal hypertension and the development of varices and ascites
Definition
What does the resistance in blood flow from the increase of fibrotic tissue in the liver cause?
Term

-alcohol

-hepatitis B and C (chronic viral infections)

-fatty liver disease

Definition
main causes of cirrhosis
Term

biotransformation of medications

 

Therefore, medications may need to be eliminated or adjusted.

Definition
Liver plays major role in...
Term
occurs when portal venous pressure is 12 mmHg (portal hypertension) greater than vena cava pressure
Definition
When does variceal bleeding occur?
Term

non-selective B-adrenergic blocking agents such as **Propanolol** 10 mg TID or **Nadolol** 20 mg qday

 

**Careful in asthma pts

Definition
Tx of cirrhosis: begin prophylaxis with which drugs?
Term

younger patients or patients with resistance to portal HTN

 

Start with isosorbide-mononitrate 20 mg twice daily and increase to 20 mg TID after 1 week.

Definition
Tx of cirrhosis: nitrates may be considered in what type of pts?
Term

octreotide or somatostatin

 

These meds increase the vascular tone in the GI tract by inhibiting vasodilatory peptides thus producing mesenteric vasoconstriction.

Definition
Tx of cirrhosis: acute variceal hemorrhage is managed by which meds?
Term
Recommend that diuretic therapy be initiated with the combination of spironolactone (potassium-sparing diuretic) and furosemide (loop-diuretic, potassium-wasting).
Definition
Type of tx if clinical signs of ascites present
Term
spontaneous bacterial peritonitis and hepatic encephalopathy
Definition
other complications possible with cirrhosis
Term

-straining at least 25% of the time

-lumpy or hard stools at least 25% of the time

-feeling of incomplete evacuation at least 25% of the time

-2 or fewer bowel movements in a week

**Know what is a normal bowel movement for your pt so as to not overtreat**

Definition
Functional constipation is defined as 2 or more of the following complaints present for at least 12 months in the absence of laxative use:
Term
40%
Definition
What percent of pts report having constipation over 65?
Term

-First, dietary changes should be made by increasing the amount of dietary fiber consumed.

-Increase both exercise, especially after supper, and fluid intake.

-Rule out any conditions, such as hypothyroidism. -Discontinue or switch possible offending meds.

Definition
What should you do first in treating constipation?
Term
bulk producing laxatives
Definition
What type of constipation drug has an onset of action 12-24 hours up to 3 days and is good for long-term prevention and tx?
Term

-Bran (soluble and insoluble)

-Psyllium (Metamucil, Fiberall, Serutan) -Methylcellulose (Citrucel powder and tablets)

-Calcium polycarbophil (FiberCon)

-Malt soup extract (Maltsupex)

 

Encourage 8 oz of fluid with all of these.

Definition
examples of bulk producing laxatives
Term
emollient, lubricating, or stool softeners (Surfactants)
Definition
What type of constipation drug has an onset of action of 1-3 days for docusate products or 6-8 hours for mineral oil?
Term
emollient, lubricating, or stool softerners (Surfactants)
Definition
What is used as an ineffective way to tx constipation but used mainly as prevention?
Term

-May cause lipoidal pneumonia if aspirated

-Leaks from the anal sphincter

-Absorbs fat-soluble vitamins

-Should only be used for short periods of time

Definition
Reasons why mineral oil has limited usefullness
Term

-Docusate sodium (DSS) (Colace)

-Docusate calcium (Surfak)

-Docusate potassium (Dialose)

Definition
examples of emollients, lubricating, or stool softeners
Term
irritants or stimulants
Definition
What type of constipation drug has an onset of action of 6-12 hours for oral and 15-60 minutes for rectal, and is not recommended on a daily basis?
Term

-Bisacodyl (Dulcolax, Correctol)-enteric coated tablets and suppositories, tablets should NOT be administered with milk or antacids because the increase in gastric pH may dissolve the enteric coating of the tablet and cause stomach cramping

-Glycerin suppositories-work through local irritating and hyperosmolar effect, not systemically absorbed

-Sennosides (Senokot, Ex-Lax)

Definition
examples of irritants or stimulants
Term

irritants or stimulants

 

These agents are not recommended on a daily basis. The same dose will not produce the same result in different indiividuals.

Definition
Which type of constipation drug works by stimulating the mucosal nerve plexus of the colon?
Term
saline or hyperosmotic cathartics
Definition
What type of constipation drug has an onset of action of 30 mins to 3 hours for oral and 5-15 mins for rectal (sodium phosphate enema)**Quick onset**?
Term

-Magnesium hydroxide (MOM)

-Lactulose (Chronulac, Kristalose)-can be used to lower blood ammonia levels

Definition
examples of saline or hyperosmotic cathartics
Term
saline or hyperosmotic cathartics
Definition
Which type of constipation drug is composed of relatively poorly absorbed ions such as magnesium, sulfate, phosphate, and citrate, which produce their effects by osmotic action?
Term
diarrhea
Definition
defined as an increased frequency and decreased consistency of fecal discharge as compared to an individual's normal bowel pattern
Term
viral (Norwalk, rotavirus) and bacterial (Shigella, Salmonella, Campylobacter, Staph, E.coli) microorganisms
Definition
What accounts for most episodes of infectious diarrhea?
Term

-**Manage the diet (Recommend discontinuing consumption of solid foods and dairy products for 24 hours, then bland diet started, feeding continued in children with acute bacterial diarrhea.)

-Prevent excessive water, electrolyte, and acid base disturbances (Rehydration and maintenance of water and electrolytes are primary tx goals until episode ends.)

-Provide symptomatic relief

-Treat curable causes

-Manage secondary disorders causing diarrhea

Definition
What are the therapeutic goals for the tx of diarrhea?
Term

BSS-bismuth subsalicylate (Pepto-Bismol, Kaopectate, Maalox Total Stomach Relief)

 

Attapulgite contains BSS

Children's Pepto contains only calcium carbonate.

Definition
examples of antisecretory agents (tx for diarrhea)
Term
BSS has the distinction of being the only OTC stomach remedy proven clinically effective in the relief of both upper and lower GI symptoms (indigestion, relieving abdominal cramps, and controlling diarrhea)
Definition
What distinction is tied to BSS?
Term

-oral antidiarrheal agent effective for control of nonspecific diarrhea

-prophylactic tx of traveler's diarrhea -prevent attachment of microorganisms to intestinal mucosa, to inactivate enterotoxins, and to exert a direct antimicrobial effect

-BSS has antisecretory, anti-inflammatory, and antibacterial effects.

Definition
What is BSS used for concerning diarrhea?
Term
True
Definition
T/F: BSS can be toxic if given excessively to prevent or tx diarrhea.
Term

-pts who need to avoid salicylates (ASA allergy)

-pts taking Warfarin (Coumadin) or aspirin

-children

Definition
What type of pts do you need to be careful with for BSS drugs?
Term

-antisecretory agents

-adsorbents

-antimotility/antispasmodics

Definition
What are the 3 types of drugs used to tx diarrhea?
Term
Calcium polycarbophil (FiberCon, Equalactin, Mitrolan)
Definition
example of adsorbents (tx for diarrhea)
Term
calcium polycarbophil (adsorbent)
Definition
What is the type of diarrhea tx that is a hydrophilic, polyacrylic resin that is insoluble in water and can absorb 60 times its weight in water?

If the pt has diarrhea, this same drug absorbs excess water by forming a gel that facilitates the normalization of bowel movements.
Term
calcium polycarbophil (adsorbent)
Definition
This drug used for tx of diarrhea needs to be taken with 8 oz of water to prevent choking as the product expands in the area above the trachea.
Term
antimotility/antispasmodics
Definition
What type of drugs are opiates and opioid derivatives delay the transit of transluminal contents or increase gut capacity, prolong contact, and absorption?
Term

-invasive bacterial diarrhea pts

-preschool children

 

**Opioids cause the bowel to shut down so caution in older pts

Definition
When should you not use antimotility/antispasmodic drugs?
Term

-Paregoric (Camphorated tincture of opium)-Schedule III, contains opium which causes antispasmodic effect

-Diphenoxylate (Lomotil)-Schedule V, contraindicated in children    < 2 yo

-Loperamide (Imodium, Kaopectate, Maalox Antidiarrheal, Pepto Diarrhea Control)-OTC, not recommended in children under 2 yo

-Difenoxin (Motofen)-active metabolite of diphenoxylate, contraindicated in children < 2 yo

Definition
examples of antimotility/antispasmodic drugs
Term
gastroesophageal reflux
Definition
defined as the retrograde movement of gastric contents from the stomach into the esophagus
Term
GERD
Definition
a chronic, relapsing condition with associated morbidity and an adverse impact on quality of life, stomach contents reflux upward
Term

1. reflux esophagitis

2. erosive eosphagitis

3. strictures

4. Barrett's esophagus

Definition

definitions/progressions associated with GERD:

1. inflammation of the esophagus

2. erosion of squamous epithelium

3. common in distal esophagus and NSAIDS are known contributors

4. replacement of the squamous epithelial lining replaced with specialized columnar-type epithelium

Term

-defective lower esophageal sphincter (LES) pressure or function

-anatomic factors

-esophageal clearance

-mucosal resistance

-gastric emptying

-epidermal growth factor

-salivary buffering

Definition
contributors to GERD
Term

-elevate the head of the bed

-dietary changes

-weight reduction

-smoking cessation

-avoid alcohol

-avoid tight fitting clothing

-discontinue offending meds

Definition
non-pharmacologic tx for GERD
Term

-Antacids

-H2 Receptor Antagonists (H2RAs)

-Proton-Pump Inhibitors (PPIs)

-Prokinetic Agents

Definition
4 types of GERD drugs
Term
antacids
Definition
agents that work by neutralizing gastric acid and increasing the pH of gastric contents and increases the LES

These drugs should NOT be given at night.
Term
antacids
Definition
What is the type of GERD drug that provides prompt (almost immediate) relief of symptoms, but have a short duration of action (20-40 minutes on empty stomach) and require frequent dosing?
Term
delavirdine, itraconazole, ketoconazole, IRON, DIGOXIN, PHENYTOIN, indomethacin, chlorpromazine
Definition
drug interactions of antacids
Term
Phase III

Phase I

Phase II
Definition
Phases of GERD tx:
-phase consisting of interventional therapies
-phase consisting of lifestyle changes and pt-directed therapy with antacids and/or non-prescription histamine-2 receptor antagonists or PPIs
-phase consisting of pharmacologic therapies with standard or high dose acid suppressing agents
Term

-Aluminum Hydroxide-constipating, used in dialysis

-Magnesium Hydroxide (Milk of Magnesia-MOM)-laxative effect, do not use if CrCl < 30 mL/min

-Calcium Carbonate (Tums, Children's Pepto)-constipation and flatulence, used in osteoporosis

-Sodium Bicarbonate (baking soda)-IV formulations to neutralize acid

-Alginate (Gaviscon)-alginic acid and bicarbonate combine to create a foam barrier to reduce reflux

Definition
examples of antacids (tx for GERD)
Term
H2 receptor antagonists
Definition
type of drugs effective for treating MILD to MODERATE GERD with an onset of action of 1-3 hours and requirement of renal adjustment

competetively binds to the H-2 receptors on the parietal cell inhibiting the binding of histamine to the receptors, reduces the histamine-stimulated production of gastric acid
Term

Drugs ending in "tidine"

-Cimetidine (Tagment, Tagment HB)

-Rantidine (Zantac, Zantac 75)

-Famotidine (Pepcid, Pepcid AC)

-Nizatidine (Axid, Axid AR)

Definition
examples of H2 receptor antagonists (tx for GERD)
Term
Cimetidine (Tagment, Tagment HB)
Definition
What is the H2 receptor antagonist drug that inhibits the CYP450 enzyme, has multiple drug interactions, and can produce gynecomastia and impotence?
Term
proton pump inhibitors (PPIs)
Definition
What type of drug works by blocking the H+/K+/Atpase enzyme that pulls out bicarbonate and pumps in acid with a maximum effect seen in a few days (do not work immediately)?

Best to be taken 15-30 minutes before breakfast
Term

Drugs ending in "prazole"

-Omeprazole (Prilosec, Prilosec OTC, Rapinex powder, Zegerid powder/capsules/chewable tablets

-Lonsoprazole (Prevacid-capsules/IV)

-Rabeprazole (Aciphex-tablets)

-Pantoprazole (Protonix-tablets/IV)

-Eosmeprazole (Nexium-capsules/oral suspension/IV)**Best for nighttime

Definition
examples of PPIs (tx for GERD)
Term

Zegerid capsules

 combination of Omeprazole and sodium bicarbonate

 

Capsules contain 300 mg of Na so need to be especially careful with certain types of pts, i.e. CHF pts

 

Zegerid should be taken 1 hour before meals.

Definition
What is the only combination drug for tx of GERD? What is it a combination of?
Term

-Pantoprazole and omeprazole can show a false positive on drug screens (because of marijuana component)

-Omeprazole-CYP2C9, including Coumadin**

-Lansoprazole-CYP450, including theophylline**

-Pantoprazole has minimal interactions

Definition
drug interactions of PPIs
Term
promotility agents/prokinetic agents
Definition
agents used as adjunct to acid suppression therapy in pts with known motility defect

not as effective as acid suppression therapy

good for pts with diabetic gastric paresis
Term

-Cisapride-pulled off market due to life-threatening arrhythmias

-Metoclopramide-a dopamine antagonist, increases LES pressure in dose-related manner, accelerates gastric emptying

Definition
examples of promotility/prokinetic agents (tx for GERD)
Term
peptic ulcer disease (PUD)
Definition
a heterogenous group of disorder involving the UPPER GI tract

mostly chronic condition characterized by remission and recurrences
Term

duodenal and gastric ulcers most common

 

-H. pylori (infections from gram-negative bacilli)

-NSAID-induced

-Stress Ulcers

-Acid hypersecretion (Zollinger-Ellison Syndrome, ZE)

Definition

most common types of peptic ulcers

 

Name the 4 etiological forms of peptic ulcers.

Term
H. pylori
Definition
cause of most all NSAID-induced peptic ulcer or stress ulcers
Term

H. pylori ulcers very contagious

 

Triple therapy: PPI plus 2 antibiotics

Quadruple therapy: PPI, BSS, tetracycline and metronidazole

**Never use only 1 antibiotic because resistance is too strong and never do tx for less than 10 days.

Definition

Which type of peptic ulcer is very contagious and commonly found in families?

 

What are the 2 unique therapy options and what makes up the therapies?

Term

-Amoxicillin (Penicillin class so contraindicated in pts with PENICILLIN ALLERGY**)

-Clarithromycin (Macrolide class so contraindicated in pts with MACROLIDE ALLERGY**, adverse effects: abd pain, diarrhea, DISORDER OF TASTE, ingestion, nausea, headache, LIVER FAILURE, Steven-Johnson Syndrome)

-Tetracylcine (Contraindicated in hypersensitivity to tetracycline, last half of pregnancy, children < 8 yo, AE: photosensitivity)

-Metronidazole (Contraindicated in METRONIDAZOLE ALLERGIES and first trimester of pregnancy, AE: METALLIC TASTE, INTERACTION WITH ETOH**)

Definition
drugs used to tx H.pylori ulcers
Term

Prevpac: Lansoprazole, Clarithromycin, Amoxicillin

Helidac: BSS, Tetracycline, Metronidazole

Pylera: Biskalcitrate potassium, Metronidazole, Tetracycline

Definition

Pre-packaged Combo Tx for H. Pylori ulcers

 

What makes up the Prevpac combo?

What makes up the Helidac combo?

What makes up the Pylera combo?

Term

-Poor pt compliance (compliance decreased with multiple meds, increased frequency of admin, increased length of tx, intolerable AE, costly drug regimens)

-Resistant organisms

-Low intragastric pH

-High bacterial load

Definition
reasons for tx failures in H. pylori tx
Term
stomach
Definition
usual location of NSAID-induced ulcers
Term

Prevention:

-slow release and enteric coated formulations

 -use PPI or Misoprostol with NSAID in high risk pts (Misoprostol is a prostaglandin CONTRAINDICATED IN PREGNANCY)

-Sucralfate (Carafate)-forms "coating" over ulceration that protects ulcer from exposure to acid

 

**Should switch to COX-2 inhibitor if have NSAID-induced ulcer**

Definition

What are some ways to prevent NSAID-induced ulcers?

 

What should you do if pt forms NSAID-induced ulcer?

Term
ulcerative colitis
Definition
a mucosal inflammatory condition confined to the RECTUM AND COLON only affecting the mucosa and sub-mucosa
Term
Crohn's Disease
Definition
an inflammation of the GI tract that can affect any part, FROM THE MOUTH TO THE ANUS
Term

-5-Aminosalicyclic acid (ASA) Agents

-Immunosuppresive agents

-Tumor Necrosis Factor Alpha Blockers

Definition
3 types of tx for Inflammatory Bowel Disease
Term
M.O.A: Acts locally in colon to decrease inflammatory response and systemically interferes with secretion by inhibiting prostagladin synthesis
Definition
5-ASA Agents M.O.A
Term
Sulfasalazine (Azulfidine)
Definition

Which 5-ASA Agent is this (tx for IBD)?

-conjugate of 5-ASA and sulfapyridine

-contraindicated in sensitivity of sulfites, sulfonamides, and salicylates or aspirin

-must be adjusted for CrCl < 30mL/min

-may cause folate deficiency, USE FOLIC ACID SUPPLEMENT

-COMMONLY IMPARTS ORANGE-YELLOW DISCOLORATION TO URINE AND SKIN

-works in COLON

-**Pregnancy Cat. B, do not breastfeed

Term
Mesalamine (Rowasa, Asacol, Pentasa, Canasa, Lialda)
Definition

Which 5-ASA Agent is this (tx for IBD)?

-Rowasa and Canasa admin in rectal suspension enema or suppository

-Oral forms are delayed-release

-Sensitivity to salicylates and sulfites (but not sulfonamides)

-Many pills taken

-**Pregnancy Cat. B, do not breastfeed

-Major drug interaction with Varicella Virus Vaccine

Term
Olsalazine (Dipentum)
Definition

Which 5-ASA Agent is this (tx for IBD)?

-5-ASA dimer derivative given orally

-contraindicated in clients ALLERGIC TO SALICYLATES, but not sulfonamides or sulfites

-**Pregnancy Cat. C, do not breastfeed

-Major drug interaction with Varicella Virus Vaccine

Term
Balsalazide (Colazal)
Definition

Which 5-ASA Agent is this (tx for IBD)?

-oral compound for tx of UC

-prodrug of Mesalamine (broken down by bacteria in colon to release Mesalamine and an inert compound)

-contraindicated in clients ALLERGIC TO SALICYLATES, but not sulfonamides or sulfites

-**Pregnancy Cat. B, do not breastfeed

Term
Azathioprine (Azasan, Imuran)
Definition

Which Immunosuppressive Agent is this (tx for IBD)?

-Blackbox:Chronic immunosuppression with this purine antimetabolite increases risk of neoplasia in humans.

-**Pregnancy Cat. D, do not breastfeed

Term
Cyclosporine (Restasis, Sandimmune, Neoral)
Definition

Which Immunosuppressive Agent is this (tx for IBD)?

-**Pregnancy Cat. C, do not breastfeed

-can cause Hirsutism and pruritus

Term
Methotrexate
Definition

Which Immunosuppressive Agent is this (tx for IBD)?

-**Pregnancy Cat. X, do not breastfeed

-can cause alopecia, photosensitivity, rash

Term

Tumor Necrosis Factor Alpha Blockers

 Infliximab (Remicade)

-reduced infiltration of inflammatory cells and reduces TNF-production inflamed areas of intestine

 -**common AE is infections

-use with caution in pts with CHF

Definition
What type of tx should be used in MODERATE to SEVERE Crohn's disease?
Term

-corticosteroids (Hydrocortisone, Prednisone, Budesonide)

-enemas and/or orally

-nicotine-smokers may have less UC than non-smokers, can be given via rectal enema or transdermal patches

Definition
other agents to tx PUD
Term
nausea
Definition
defined as the inclination to vomit or as a feeling in the throat of epigastric region alerting an individual that vomiting is imminent
Term
vomiting
Definition
defined as the ejection or expulsion of gastric contents through the mouth and is often a forceful event
Term

-cardiovascular

-infectious

-pregnancy

-drug-induced

-overfeeding infant

Definition
etiology of n/v
Term

-affects visceral stimulation

examples:

-phosphorylated carbohydrate solution (Emetrol, Emecheck)

-carbonated soft drinks (Sprite, Coke, or Coke syrup)

-bismuth subsalicylate (in Pepto-Bismol and Kaopectate)

Definition
locally acting tx of n/v
Term
antihistamine and phenothiazine (dopamine antagonists)
Definition
Which type of centrally acting n/v tx is this?

-M.O.A.: block H-1 and dopamine receptors
Term

Promethazine (Phenergan)

 

Other antihistamines and phenothiazines:

-Prochlorperazine (Compazine)

 -Thiethylperazine (Norzine, Torecan)

Definition

Which centrally acting n/v tx is this?

-Chemically a phenothiazide

-H-1 antagonist with considerable anticholinergic, sedative, and antiemetic effects and some local anesthesia properties

-prevents motion sickness

-can cause SEVERE IRRITATION and NECROSIS if given IV

-Blackbox:drug should not be used in pts younger than 2 yo because of potential for fatal respiratory depression, including fatalities.

Term
M.O.A.: block acetylcholine receptors in the vestibular center
Definition
What is the M.O.A. for anticholinergics (tx for n/v)?
Term

Scopolamine (Transderm-SCOP)

-a transdermal formulation generally worn behind the ear

-best used PRIOR to travel or when motion sickness is expected

-also approved for post-surgical n/v

Definition

example of anticholinergics (tx for n/v)

 

What is it used for specifically and how is it used?

Term
M.O.A.: block acetylcholine receptors in the vestibular center
Definition
What is the M.O.A. for antihistamines (tx for n/v)?
Term

-Dimenhydrinate (Dramamine)

-Cyclizine (Marezine)

-Meclizine (Antivert, Bonine, Dramamine II)

Definition
examples of antihistamines
Term
AE: DROWSINESS OR CONFUSION, blurred vision, dry mouth, URINARY RETENTION, possibly tachycardia
Definition
AE of antihistamines (tx for n/v)
Term
M.O.A.: block descending impulses from the cerebral cortex
Definition
What is the M.O.A. for cannabinoids (tx for n/v)?
Term

-Dronabinol (Marinol) CIII

-Medical marijuana for smoking

-Nabilone (Cesamet)

Definition
examples of cannabinoids (tx for n/v)
Term
M.O.A.: blocks the 5-HT-3 receptors in the intestines and CTZ (chemoreceptor trigger zone)
Definition
What is the M.O.A. for serotonin 5-HT antagonists (tx for n/v)?
Term

Drugs end in "setron"

-Ondansetron (Zofran)-approved for children to prevent n/v associated with general anesthesia and chemotherapy, used a lot in pregnancy

-Granisetron (Kytril)

-Dolasetron (Anzemet)

-Palonosetron (Aloxi)-long half life (40 hours compared to the others of 8 hours, second dose usually not needed, single injection prevents both acute nausea and delayed nausea)

 

used both in IV or PO for severe chemotherapy-induced n/v

Definition

examples of serotonin 5-HT antagonists

 

What are these used for specifically?

Term
M.O.A.: unknown, may inhibit prostaglandin synthesis or feedback inhibition, also increase appetite and mood
Definition
What is the M.O.A. for corticosteroids (tx for n/v)?
Term

-Trimethobenzamide (Tigan)-decreases stimulation to CTZ

-Metoclopramide (Reglan)-prokinetic agent may have some antiemetic effect in some causes of nausea (diabetic gastroparesis)

-Benzodiazepines (Valium, Ativan)-not generally recommended for mild-moderate nausea due to dependency, but can be useful adjunct to other therapies, especially when given IV

-Aprepitant (Emend)-substance P/neurokinin-1 receptor antagonist, used in combo with other antiemetic drugs to prevent acute and delayed n/v associated with initial and repeat courses of chemotherapy

-Droperidol (Inapsine)-a butyrophenone, used as sedative and to treat n/v for surgical procedures, BLACK BOX for injectable Droperidol due to its association with fatal cardiac arrythmias

Definition
other miscellaneous agents used to tx n/v
Term

associated neurotransmitter: dopamine recommended

 

antiemetic: Metoclopramide (Reglan) or Prochloperazine (Compazine)

Definition
What is the associated neurotransmitter and recommended antiemetic for migraine headaches?
Term

associated neurotransmitters: histamine, acetylcholine

 

recommended antiemetics: antihistamines and anticholinergics

Definition
What are the associated neurotransmitters and recommended antiemetics for vestibular nausea?
Term

associated neurotransmitter: unknown recommended

 

antiemetics:

for nausea: ginger, vitamin B6

for hyperemesis gravidarum: 1st line: Promethazine (Phernergan) 2nd line: Serotonin antagonists and corticosteroids

Definition
What are the associated neurotransmitters and recommended antiemetics for pregnancy-induced nausea?
Term

associated neurotransmitters: dopamine, serotonin

 

recommended antiemetics:

1st line: Dopamine antagonists

2nd line: Serotonin antagonists

Definition
What are the associated neurotransmitters and recommended antiemetics for gastroenteritis?
Term

associated neurotransmitters: dopamine, serotonin

 

recommended antiemetics: to prevent

prevention: serotonin antagonists

Definition
What are the associated neurotransmitters and recommended antiemetics for PONV (post-operative n/v)?
Term
1-2 episodes yearly
Definition
About how many episodes of diarrhea per year does the average U.S. person have?
Term
drug-induced liver disease
Definition
Accounts for:
-~2-5% of hospitalizations for jaundice
-10% of all cases of hepatitis in adults
-40% of cases in adults > 50 yo
Term
drug-induced liver disease
Definition
What is the condition in which a variety of clinical presentations may be seen in pts ranging from asymptomatic mild biochemical abnormalities to an acute illness with jaundice that resembles viral hepatitis?
Term
alcohol
Definition
What is the main cause of drug-induced liver disease?
Term

-antibiotics

-antidepressants

 -antihyperlipidemias

-sulfonamides

-salicylates

-sulfonylureas

-quinidine

-Tacrin (used in Alzheimers)-50% of individuals will have elevation

Definition
What classes of drugs may produce an elevation in serum aminotransferases in fewer than 5% of individuals?
Term
The liver will revert back to normal.
Definition
What happens when you discontinue drug therapy for drug-induced liver disease?
Term
acute hepatic injury
Definition
What is the most common form of liver damage caused by drugs?
Term

-hepatocellular (cytotoxic) damage

-mixed pattern of cytotoxic and cholestatic injury

-less commonly, steatosis

Definition
How does acute hepatic injury present?
Term

-necrosis

-steatosis

-cellular degeneration

 

*Similar to that seen in viral hepatitis

Definition
What are the 3 symptoms included in cytotoxic damage?
Term

-Acetaminophen

-Yellow Phosphorus

-Iron

-Phenytoin (Dilantin)

-Methyldopa

-Isoniazid

-Diclofenac

**Watch drugs with Tylenol. Do NOT want to give more than 4 gm of Tylenol per day.**(She said this would be a test question!)

Definition
Drugs that are cytotoxic to the liver
Term
jaundice
Definition
What does cholestatic damage to the liver often resemble?
Term
interfere with hepatocyte secretion of bile constituents
Definition
What do drugs that cause cholestatic damage interfere with?
Term

-Chlorpromazine

-Nafcillin

-Trimethoprim-sulfamethoxazole (Bactrim)

-Rifampin

-Erythromycin estolate

-Captopril

-Estradiol -Amiodarone (rarely)

Definition
Drugs that cause cholestatic damage
Term
alcoholism or gallstones
Definition
What is pancreatitis most often associated with?
Term

-ERCP in pt with gallstone pancreatitis with obstructive disease

-Reversal of hypercalcemia

-Cessation of possible causative drugs

-Administration of insulin to poorly controlled diabetics with elevated triglycerides

Definition
What needs to be corrected for predisposing factors of acute pancreatitis?
Term
-supportive care: pain control, IV fluids, and NPO

Symptoms will resolve in 5-7 days.
Definition
Tx of acute pancreatitis
Term

-Requires ICU admission

-Pain management: begin with non-narcotic analgesics, then switch to oral narcotics, **Meperidine** favored over Morphine because Morphine can cause an increase in Oddi pressure (increasing the pain)

-Prevent infection which occurs after 10-14 days

-System support

-Cessation of alcohol or other offending drugs

-Correction of pancreatic insufficiency with supplementation

 

**Know Meperidine is favored for pain in pancreatitis!**

Definition
Facts about chronic pancreatitis
Term
Hepatitis A
Definition
What is the type of hepatitis that fits this description?
-acute
-fecal to oral route
-from contaminated food
-preventable through vaccination
-full recovery in 12 weeks, but may last up to 6 months
-produces inflammatory necrosis of liver
-infection has 3 stages: incubation, acute hepatitis, convalescence
Term

-healthy diet

-rest

-maintaining fluid balance

-avoiding hepatotoxic drugs and alcohol

Definition
tx for HAV
Term
Hepatitis B
Definition
What is the type of hepatitis that fits this description?
-chronic
-leading cause of cirrhosis and hepatocellular carcinoma
-transmission through contact with infected blood products or bodily secretions
-no curative tx
Term

Best tx is prevention and universal vaccination of children.

-Interferon alpha2b

-Lamivudine

 

These drugs are used to reduce replication and should not be used together.

Definition
tx for HBV
Term
Interferon alpha-2b
Definition
Which HBV tx drug is this?
-possesses antitumor, antiviral, and immunomodulating activity
-about 35% of pts tx with injections 4-6 months will have a long-term response
-side effects include flu-like symptoms, fatigue, headache, n/v, loss of appetite, hair thinning (because it may depress the bone marrow)
-contraindicated in pts with active major depression
-alcohol abuse reduces risk of drug
Term
Lamivudine
Definition
Which HBV tx drug is this?
-antiviral
-nucleoside reverse transcriptase inhibitor
-increasing resistance to this med and has less of a success rate than the other
Term
Hepatitis C
Definition
What is the type of hepatitis that fits this description?
-primarily asymptomatic, which has led to its widespread worldwide
-transmitted mainly through IV drug use, contaminated blood products, tattoos
-estimated that 10-30% develop cirrhosis of liver and end-stage liver disease
-mainstay therapy is supportive care
-definitive cure is liver transplant
Term
Interferon
Definition
Which HCV tx drug is this?
-3 types, plus combo with Ribavirin
-blood tests and biopsy may determine need for tx
-must be given by INJECTION 3 X week for 16 weeks
-side effects include headache, fever, fatigue, loss of appetite, n/v, thinning of the hair
Term
Ribavirin
Definition
Which HCV tx drug is this?
-given by MOUTH
-given as combo with Interferon
-can have additional side effects including DEPRESSION, severe anemia, especially BIRTH DEFECTS
-PREGNANCY SHOULD NOT BE ATTEMPTED UNTIL 6 MONTHS AFTER TX ENDED (applies for males and females)
-may also interfere with production of RBCs and platelets depressing bone marrow
Term
Hepatitis A
Definition
What is the most frequently reported vaccine-preventable disease in the US?
Term

-A (HAV)

-B (HBV)

-C (HCV)

-delta -E

Definition
5 types of Hepatitis
Term

-Immunoglobulin (Ig)-provides protection by passive transfer of concentrated antibodies, prevent by 85% or more within 2 weeks of exposure, major group receiving is international travelers

-Inactivated HAV vaccines, Havrix and Vaqta-reduce transmission rate by 94-100% 1 month after primary vaccination, second booster injection given 6 months after

Definition
Immunizations for Hepatitis A
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