pathopharm 1 drugs mod 7 Flashcards
class: adsorbents
bismuth subsalicylate
bismuth subsalicylate MOA
-coats the walls of the GI tract
-bind the causative agent for elimination
(activated charcoal)
bismuth subsalicylate SE
(in large amounts)
-increased bleeding time
-constipation
-dark stools and darkening of tongue
class: anti motility
loperamide & diphenoxylate
loperamide & diphenoxylate MOA
slows peristalsis by reducing rhythmic contractions & smooth muscle tone of the GI and also has a drying effect
loperamide & diphenoxylate SE
-urinary retention
-headache, dizziness, anxiety, drowsiness
-bradycardia, hypotension
-dry skin
-flushing
what if added to diphenoxylate makes it no longer be able to be sold over the counter
atropine (causes all the SE)
class: probiotics
-lactobacillius organism (bacid, culturelle)
-saccharomyces boulardii (florastor)
probiotic MOA
replenish bacteria and restore normal flora
lactobacillius organism
bacteria that make up the majority of normal flora of the gut
saccharomyces boulardii
C.Diff for treatment by replenishing bacteria & restoring normal flora (need supplement)
class: bulk forming laxatives
psyllium
psyllium MOA
-act similar to dietary fiber
-absorb water into the intestine, increasing bulk
-distends bowel to initiate reflex bowel activity and bowel movement
psyllium SE
-impaction above strictures
-fluid/lyte imbalance (less likely than others)
-gas formation
-esophageal blockage
class: emollient
docusate sodium & mineral oil
for impaction, both prevent water from moving out of intestines
docusate sodium MOA
lubricates fecal material and walls, promotes fat absorption into fecal mass
docusate sodium uses
prevent opioid induced constipation
docusate sodium route
PO
mineral oil MOA
lubricate intestines
mineral oil uses
fecal impactions
mineral oil route
PO or PR
docusate sodium & mineral oil SE
-skin rashes
-decreased absorption of vitamins
class: hyperosmotic
-glycerin
-lactulose
-polyethylene glycol
glycerin use
mild & seen in children
lactulose use
liver disease & hepatic encephalopathy
digested in large intestine creating a hyper-osmotic environment which draws water into the colon + reduces blood ammonia levels
polyethylene glycol use
giver before diagnostic surgical bowel procedures bowel prep for col
glycerin, lactulose
& polyethylene glycol MOA
-increasing water content in feces
-promotes distention, peristalsis & evacuation
glycerin, lactulose
& polyethylene glycol SE
-abdominal bloating
-rectal irritation
-electrolyte imbalance
class: saline
-magnesium salts
-sodium salts
saline MOA
increase osmotic pressure and draw water into colon
saline SE
-mag toxicity
-lyte imbalance
-cramping, diarrhea
class: stimulants
-bisacodyl
-senna
most likely to cause dependence
stimulants use
constipation or whole bowel evacuation
stimulants SE
-nutrition malabsorption
-gastric irritation
-lyte imbalance