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111 Cards in this Set
- Front
- Back
define nausea
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inclination to vomit
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define retching
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rhythmic contractions
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T or False
Regurgitation does not equal vomiting |
True
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Esophagus is what kind of tissue
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stratified squamous
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what is critical for development of esophageal mucosal injury?
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gastric juices
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GERD causes....
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Erosion, ulceration, bad taste, pneumonitis
**Barretts esophagitis **Adenocarcinoma |
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describe H. pylori
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causes chronic gastritis
Gram neg rod, motile produces Urease-protects bug from acid Does not invade-it superfical colonizes by adhesion |
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define ulcer
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break in mucosa(anywhere)
extends thru muscularis mucosa into submucosa or DEEPER |
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put in order from inner to outer
submucosa muscularis mucosa mucosa |
mucosa
Muscularis mucosa submucosa(where blood vessels are) |
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what is the most important factor in Peptic Ulcer Disease
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H. Pylori
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how does H. pylori cause damage?
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produces proteases and phospholipases-break down epithelial cells-->ulcer
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what are main characteristics of Peptic Ulcers?
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Duodenum
lesser curvature body/antrum |
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main characteristics of Duodenal ulcers?
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acid hyposecretion
rapid gastric emptying |
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what are the complications seen in peptic/duodenal ulcerS?
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obstruction(most common)
malignant change hemorrhage perforation |
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malignant change mostly seen in which type of ulcer?
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rare in DU
mainly GU |
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what are the symptoms of chronic dyspepsia
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epigastric pain
N/V |
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2 common causes of PUD
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H. pylori
NSAIDS |
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H. pylori is listed as a?
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carcinogen
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H. pylori secretes catalase, which does what
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inactivates our neutrophils
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H. pylor vs NSAID
ulcer depth |
HP-superfical
NSAID-DEEP |
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HP vs NSAID
-histology -pain |
HP-chronic inflam.
NSAID-no inflam HP-pain NSAID-pain, but can be asymptomatic |
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GI bleeding is more severe in which cause of ulcer ?
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NSAID induced-life threatening
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what are the alarm symptoms for PUD
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Weight LOSS
bleeding dysphagia chest pain |
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Endoscopy does what?
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visualizes ulcer and can biopsy to detect for HPI
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fecal antigen test
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noninvasive
tests for HP antibodies used for verification of eradication of HP |
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Urea Breath Test
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noninvasive
HP secretes urease which hydrolyzes a labeled C->>pt exhales the labeled CO2 -if labeled co2 is exhaled-HP is present |
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CLO test
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detects HP-urease causes medium to turn red
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campylobacter means?
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curved bacteria
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helicobacter means?
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spiral or helical bacteria
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first line Tx of HPI eradication
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PPI + clarithromycin +amoxil/metro/tetra for 2 weeks
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which PPI is not approved for HP tx
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pantoprazole or desomeprazole
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why are antibiotics comboed with PPIs for HP eradication?
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PPI dec. gastric acid volume, which increased antibiotic
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which antibiotic should be used once in HP eradication>?
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clarithromycin-bugs become resistant to drug quickly
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Drug resist. is rare in which antibtiotics for HP tx?
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amoxicillin
tetracycline (metro needs to be increased if used more than once) |
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Risk factors for NSAID-ulcers
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prior ulcer
age >65 high NSAID use (duh) ASA at same time-doesnt matter form SSRI, bisphosphates, plavix |
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1-2 RF for NSAIDs whats tx?
Moderate GI low cardiac |
NSAID + PPI or misoprostil
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>3RF for NSAID whats tx?
high GI low cardiac |
tramadol, opoids
celebrex +PPI/misoprostil |
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moderate GI, high CV risk tx?
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Naproxen +PPI/ misoprostil
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NSAID ulcer tx for
High GI/High CV risk |
avoid NSAIDS
Need PPI |
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which drug is safest for cardio problems in ulcers
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Naproxen
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whats in vimovo
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naproxen and esomeprazole
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tx for NSAID ulcer
DU vs GU |
DU-4 weeks of PPI
GU-8weeks of PPI |
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which drug keeps the pH higher longer?
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PPI>H2
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PPI facts
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inhibits H+/K+ atpase
-NO dosage adj. for renal Preg Cat. B except Omeprazole |
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omeprazole is what category
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C-so use with caution during lactation
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all PPI's provide same...
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healing rates
maintenance of healing relief of symptoms |
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PPIs do what to clarithromycin
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reduces the degradation of the acid-liable drug
-keeps drug around longer |
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NSAID ulcers
if pt is bleeding on aspirin what should be given? |
use aspirin + PPI
DO NOT switch to plavix |
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S.E. of PPIs
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infectious diarrhea ->C. diff ->if so, stop use and give antibiotic
Hip fractures H.A. |
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H2 antag facts
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inhibit acid secretion by histamine
ALL req. dose adjus. for renal imp. Preg. B-watch in lactation |
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what is H2 antag. not used for
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not used for preventing a GU due to NSAIDS
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H2 antag use
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DU-standard dose
GU-double dose needed relieves dyspepsia |
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Misoprostil
MOA Cautions |
moa-prostaglandin analog
-protects mucosa Cautions-Preg Cat. X |
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Misoprostil efficacy?
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reduces riask of increasing complications + ulcers
causes diarrhea(start low then incr.) |
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sucralfate
better for? when to use? |
best for DU
lastline |
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define GERD
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reflux of stomach contents back into esophagus
-pt does NOT make extra acid |
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defineNERD
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Neg. Endo. reflux disease
-usually dont respond to PPIs |
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define EE
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erosive esophagitis
inflam. with visable damage on endoscopy |
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pathophysio in GERD
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decrease in LESP allows contents to move up
pressure ABOVE les usually higher then stomach to prevent upflow |
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what can weaken the LES?
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estrogens, CCB + BB, and fatties/pregnant women increase pressure behind the stomach
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clinical presentation of GERD
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heartburn
regurg. N/v belching/hiccups |
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lifestyle mods for GERD
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3 small meals
eat slow lots of water dont lay down after meals DON'T USE PILLOWS(just elevate head 6 inches) |
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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 |
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severe GERD sympt. Tx with?
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PPI
LIFESTYLE MOD. ALWAYS |
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Antacid disadv.
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no esophageal healing
doesnt neutralize at night |
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alginic acid
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helps with nighttime heartburn
causes refluxing of viscous sodium alginate |
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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 |
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indication for PPI tx
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heartburn >2 days/week
use for 8-16 weeks(usually lifelong) try for 6 months before considered failure |
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metoclopramide adv
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prokinetic agent
increases LES pressur increases esophageal peristalsis |
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metoclopramide disadv.
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minimal healing
altered mental status(CNS changes) |
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what is the DOC for pt with GERD and healed esophagitis
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PPI
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CTZ senses?
responds via? |
senses toxins
reports via 5-ht3, D, Neurokinin-1 |
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enterocromaffin cells sense?
responds via? |
sesnse damage
respond directly->serotonin indirectly-> vagal afferent stim |
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vestib. system sesnse?
responds? |
senses balance and propioception
responds by Ach and histam. |
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simple vs complex vomiting
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simple-symptomatic Tx only
-Labs:none complex-fluid/elect. imbalance -psychogenic causes |
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Know the Path slide in N/V**
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**
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Antacids use?
ADE? |
simple NV-from heartburn, overeating Q2-4 hours
ADE-diarrhea(Mg) or constip. |
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H2 Antag.
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BID
simple N/V from heartburn/GERD |
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causes for motion sicknes?
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infection, injury, malignancy
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scopolamine is ______ antihistamines
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> or =
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S.E. for Scopolamine
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dry mouth, drowsiness, blurred vision
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what are medications used for motion sickness?
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anticholinergics and antihistamines
Phenothiazines |
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why arn't claritin or zyrtec used in motion sickness?
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no drowsiness activity
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Phenothiazines
actions? used for? ADE? |
actions-D2 antag., anticholinergic
used for breakthrough ADE-more risk than other therapies-excessive sedation |
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PONV RIsk factors?
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**NONsmoking**
Female history of motion sickness/PONV anesthetics-opoids/N02 long surgery (>60mins) |
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how many drugs per risk factors
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0-1; no meds
2+; prophylaxis 1-2 meds (4-5)high risk pts will recieve 3 drugs |
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when should 5-HT3s be given?
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at END of surgery
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5HT3 -which is longest acting?
ADE? |
palonisteron
H.A., constip.->no bad CNS ones |
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Droperidol
actions? ADE.? |
blocks dopiminergic CTZ stim.
QT prolongation and torsades de pointes |
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Corticosteroids for N/V
which drugs? when to give? mech? |
dexamethasone, methypred.
**give at anesthetic introduction** unkown mech |
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aprepitant
when to give? how does it work? interactions? |
3 hours before induction
NK1 antag, inhib GI + CTZ mess. 3A4 inhibitor 2CP inducer |
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what should be done to dexamethasone if takenwith aprepitant?
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decrease dexam. dose by half if co-admin.
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Metoclopramide
actions? ADE? |
anti-D2 in CTZ
prokinetic agent: inc. motility ADE-acute dystonic reactions(25%), tardive dyskinesia, psuedoparkinsonism |
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when should dose be adjusted with metoclopramide
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when pt has kidney problems
-renal adjustment needed** |
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when does acute N/V take place in CINV pts?
delayed? |
acute-within 24 hours
delayed-onset after 24 hours peaks in 2-3days |
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breakthrough meds?
what if they didnt work for prophylaxis? |
metoclopramide, phenothiazines, FHT3
use meds with diff MOA |
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CINV drugs rated by?
pts recived what regimen? |
rated by emetogenic risk
get prophylaxis + breakthrough |
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RINV risk varies by?
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area of radiation
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high risk of 90%
radiation area? recc? |
total body
prophylaxis with 5-HT3A + dexamethasone |
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low risk of <30%
radiation area? recc? |
head, neck, breast
5HT3 antag |
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what is hyperemesis gravidarum?
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hyper emesis while pregnant.
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guidelines for emesis in pregnancy from?
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ACOG-college of obstericians + gynecologists
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N/V in preg.
start with? 1st line? 2nd? 3rd? |
take multivitamin
1st-Vit B6 pyridoxine +/- doxylamine 2nd-diphenhydramine 3rd-phenothiazines, metoclopramide |
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severe N/V in preg tx?
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hyperemesis gravidarium
tx-IV hydration corticosteroids for REFRACTORY only supp nutrition-enteral |
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what factors cause nausea in stomach/small intestine area?
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chemo
surgery radiation |
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what factors cause nausea in the CTZ?
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chemo
anesthetics opoids |
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what factor causes nausea in the labrynth
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surgery
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what could be used for stomach/small intestine nausea?
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5-HT3 antag
(thru CTZ) anti-dopinaminergic anti-muscarinic anti-histaminic |
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what drugs can be used for the CTZ nausea
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anti-dopinaminergic
anti-muscarinic anti-histaminic cannabinoids |
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what drugs can be used labyrinths nausea?
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anti-muscarinic
anti-histaminic |
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biggest S.E. of phenothiazines
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dyskinesias
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