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111 Cards in this Set

  • Front
  • Back
define nausea
inclination to vomit
define retching
rhythmic contractions
T or False

Regurgitation does not equal vomiting
True
Esophagus is what kind of tissue
stratified squamous
what is critical for development of esophageal mucosal injury?
gastric juices
GERD causes....
Erosion, ulceration, bad taste, pneumonitis

**Barretts esophagitis
**Adenocarcinoma
describe H. pylori
causes chronic gastritis

Gram neg rod, motile
produces Urease-protects bug from acid
Does not invade-it superfical colonizes by adhesion
define ulcer
break in mucosa(anywhere)

extends thru muscularis mucosa into submucosa or DEEPER
put in order from inner to outer

submucosa
muscularis mucosa
mucosa
mucosa

Muscularis mucosa

submucosa(where blood vessels are)
what is the most important factor in Peptic Ulcer Disease
H. Pylori
how does H. pylori cause damage?
produces proteases and phospholipases-break down epithelial cells-->ulcer
what are main characteristics of Peptic Ulcers?
Duodenum
lesser curvature
body/antrum
main characteristics of Duodenal ulcers?
acid hyposecretion
rapid gastric emptying
what are the complications seen in peptic/duodenal ulcerS?
obstruction(most common)
malignant change
hemorrhage
perforation
malignant change mostly seen in which type of ulcer?
rare in DU
mainly GU
what are the symptoms of chronic dyspepsia
epigastric pain
N/V
2 common causes of PUD
H. pylori
NSAIDS
H. pylori is listed as a?
carcinogen
H. pylori secretes catalase, which does what
inactivates our neutrophils
H. pylor vs NSAID
ulcer depth
HP-superfical
NSAID-DEEP
HP vs NSAID
-histology
-pain
HP-chronic inflam.
NSAID-no inflam

HP-pain
NSAID-pain, but can be asymptomatic
GI bleeding is more severe in which cause of ulcer ?
NSAID induced-life threatening
what are the alarm symptoms for PUD
Weight LOSS
bleeding
dysphagia
chest pain
Endoscopy does what?
visualizes ulcer and can biopsy to detect for HPI
fecal antigen test
noninvasive
tests for HP antibodies
used for verification of eradication of HP
Urea Breath Test
noninvasive
HP secretes urease which hydrolyzes a labeled C->>pt exhales the labeled CO2
-if labeled co2 is exhaled-HP is present
CLO test
detects HP-urease causes medium to turn red
campylobacter means?
curved bacteria
helicobacter means?
spiral or helical bacteria
first line Tx of HPI eradication
PPI + clarithromycin +amoxil/metro/tetra for 2 weeks
which PPI is not approved for HP tx
pantoprazole or desomeprazole
why are antibiotics comboed with PPIs for HP eradication?
PPI dec. gastric acid volume, which increased antibiotic
which antibiotic should be used once in HP eradication>?
clarithromycin-bugs become resistant to drug quickly
Drug resist. is rare in which antibtiotics for HP tx?
amoxicillin
tetracycline

(metro needs to be increased if used more than once)
Risk factors for NSAID-ulcers
prior ulcer
age >65
high NSAID use (duh)
ASA at same time-doesnt matter form
SSRI, bisphosphates, plavix
1-2 RF for NSAIDs whats tx?
Moderate GI
low cardiac
NSAID + PPI or misoprostil
>3RF for NSAID whats tx?
high GI
low cardiac
tramadol, opoids
celebrex +PPI/misoprostil
moderate GI, high CV risk tx?
Naproxen +PPI/ misoprostil
NSAID ulcer tx for
High GI/High CV risk
avoid NSAIDS
Need PPI
which drug is safest for cardio problems in ulcers
Naproxen
whats in vimovo
naproxen and esomeprazole
tx for NSAID ulcer
DU vs GU
DU-4 weeks of PPI
GU-8weeks of PPI
which drug keeps the pH higher longer?
PPI>H2
PPI facts
inhibits H+/K+ atpase
-NO dosage adj. for renal

Preg Cat. B except Omeprazole
omeprazole is what category
C-so use with caution during lactation
all PPI's provide same...
healing rates
maintenance of healing
relief of symptoms
PPIs do what to clarithromycin
reduces the degradation of the acid-liable drug

-keeps drug around longer
NSAID ulcers
if pt is bleeding on aspirin what should be given?
use aspirin + PPI

DO NOT switch to plavix
S.E. of PPIs
infectious diarrhea ->C. diff ->if so, stop use and give antibiotic

Hip fractures
H.A.
H2 antag facts
inhibit acid secretion by histamine

ALL req. dose adjus. for renal imp.

Preg. B-watch in lactation
what is H2 antag. not used for
not used for preventing a GU due to NSAIDS
H2 antag use
DU-standard dose
GU-double dose needed
relieves dyspepsia
Misoprostil
MOA
Cautions
moa-prostaglandin analog
-protects mucosa

Cautions-Preg Cat. X
Misoprostil efficacy?
reduces riask of increasing complications + ulcers

causes diarrhea(start low then incr.)
sucralfate
better for?
when to use?
best for DU
lastline
define GERD
reflux of stomach contents back into esophagus

-pt does NOT make extra acid
defineNERD
Neg. Endo. reflux disease
-usually dont respond to PPIs
define EE
erosive esophagitis
inflam. with visable damage on endoscopy
pathophysio in GERD
decrease in LESP allows contents to move up

pressure ABOVE les usually higher then stomach to prevent upflow
what can weaken the LES?
estrogens, CCB + BB, and fatties/pregnant women increase pressure behind the stomach
clinical presentation of GERD
heartburn
regurg.
N/v
belching/hiccups
lifestyle mods for GERD
3 small meals
eat slow
lots of water
dont lay down after meals
DON'T USE PILLOWS(just elevate head 6 inches)
Tx:
if GERD symptoms <2days/week
ig >2 days/week
<2days/week- OTC antacids, H2B, Prilosec

>2days- Rx dose of H2B,OTC prilosec
-LIFESTYLE MOD. ALWAYS
severe GERD sympt. Tx with?
PPI
LIFESTYLE MOD. ALWAYS
Antacid disadv.
no esophageal healing
doesnt neutralize at night
alginic acid
helps with nighttime heartburn
causes refluxing of viscous sodium alginate
H2Bs
adv.
disadv.
adv-last for 6-10hours

dis-no increase in LES tone or decrease in freq. of GERD
develop tol. in 5 days
indication for PPI tx
heartburn >2 days/week
use for 8-16 weeks(usually lifelong)

try for 6 months before considered failure
metoclopramide adv
prokinetic agent

increases LES pressur
increases esophageal peristalsis
metoclopramide disadv.
minimal healing
altered mental status(CNS changes)
what is the DOC for pt with GERD and healed esophagitis
PPI
CTZ senses?
responds via?
senses toxins

reports via 5-ht3, D, Neurokinin-1
enterocromaffin cells sense?
responds via?
sesnse damage

respond directly->serotonin
indirectly-> vagal afferent stim
vestib. system sesnse?
responds?
senses balance and propioception

responds by Ach and histam.
simple vs complex vomiting
simple-symptomatic Tx only
-Labs:none

complex-fluid/elect. imbalance
-psychogenic causes
Know the Path slide in N/V**
**
Antacids use?
ADE?
simple NV-from heartburn, overeating Q2-4 hours

ADE-diarrhea(Mg) or constip.
H2 Antag.
BID
simple N/V from heartburn/GERD
causes for motion sicknes?
infection, injury, malignancy
scopolamine is ______ antihistamines
> or =
S.E. for Scopolamine
dry mouth, drowsiness, blurred vision
what are medications used for motion sickness?
anticholinergics and antihistamines
Phenothiazines
why arn't claritin or zyrtec used in motion sickness?
no drowsiness activity
Phenothiazines
actions?
used for?
ADE?
actions-D2 antag., anticholinergic

used for breakthrough

ADE-more risk than other therapies-excessive sedation
PONV RIsk factors?
**NONsmoking**
Female
history of motion sickness/PONV
anesthetics-opoids/N02
long surgery (>60mins)
how many drugs per risk factors
0-1; no meds
2+; prophylaxis 1-2 meds
(4-5)high risk pts will recieve 3 drugs
when should 5-HT3s be given?
at END of surgery
5HT3 -which is longest acting?
ADE?
palonisteron

H.A., constip.->no bad CNS ones
Droperidol
actions?
ADE.?
blocks dopiminergic CTZ stim.

QT prolongation and torsades de pointes
Corticosteroids for N/V
which drugs?
when to give?
mech?
dexamethasone, methypred.

**give at anesthetic introduction**

unkown mech
aprepitant
when to give?
how does it work?
interactions?
3 hours before induction
NK1 antag, inhib GI + CTZ mess.

3A4 inhibitor 2CP inducer
what should be done to dexamethasone if takenwith aprepitant?
decrease dexam. dose by half if co-admin.
Metoclopramide
actions?
ADE?
anti-D2 in CTZ
prokinetic agent: inc. motility

ADE-acute dystonic reactions(25%), tardive dyskinesia, psuedoparkinsonism
when should dose be adjusted with metoclopramide
when pt has kidney problems
-renal adjustment needed**
when does acute N/V take place in CINV pts?

delayed?
acute-within 24 hours

delayed-onset after 24 hours
peaks in 2-3days
breakthrough meds?
what if they didnt work for prophylaxis?
metoclopramide, phenothiazines, FHT3

use meds with diff MOA
CINV drugs rated by?
pts recived what regimen?
rated by emetogenic risk

get prophylaxis + breakthrough
RINV risk varies by?
area of radiation
high risk of 90%
radiation area?
recc?
total body

prophylaxis with 5-HT3A + dexamethasone
low risk of <30%
radiation area?
recc?
head, neck, breast

5HT3 antag
what is hyperemesis gravidarum?
hyper emesis while pregnant.
guidelines for emesis in pregnancy from?
ACOG-college of obstericians + gynecologists
N/V in preg.
start with?
1st line?
2nd?
3rd?
take multivitamin
1st-Vit B6 pyridoxine +/- doxylamine

2nd-diphenhydramine
3rd-phenothiazines, metoclopramide
severe N/V in preg tx?
hyperemesis gravidarium
tx-IV hydration
corticosteroids for REFRACTORY only

supp nutrition-enteral
what factors cause nausea in stomach/small intestine area?
chemo
surgery
radiation
what factors cause nausea in the CTZ?
chemo
anesthetics
opoids
what factor causes nausea in the labrynth
surgery
what could be used for stomach/small intestine nausea?
5-HT3 antag

(thru CTZ)
anti-dopinaminergic
anti-muscarinic
anti-histaminic
what drugs can be used for the CTZ nausea
anti-dopinaminergic
anti-muscarinic
anti-histaminic
cannabinoids
what drugs can be used labyrinths nausea?
anti-muscarinic
anti-histaminic
biggest S.E. of phenothiazines
dyskinesias