Exam One Review Sheet Flashcards
What are other drugs in the same class as Morphine
fentanyl hydromorphone (Dilaudid) levorphanol meperidine (Demerol) Methadone oxycodone (Percodan, Percocet)
Morphine is considered what kind of opioid?
Strong Narcotic Agonist
fentanyl is ______ times more potent than morphine.
80-100%
Mechanism of Action of morphine
- occupies mu and kappa in brain and dorsal horn of SC
- decreased release of neurotransmitters in presynaptic space
- Results in hyperpolarization of post synaptic dorsal horn neurons
- Prevent transmission of nociceptor pain
- Decreased relsear of substance P - modulates pain perception
Indications for morphine
Moderate to severe pain
Metabolism of morphine happens in the __________
Liver
Elimination of morphine is through the __________
Feces (PO)
Onset of morphine
15-30 minutes
Duration of morphine
3-7 hrs
Contraindications of morphine
Head injury patients (masks signs and symptoms)
Patients on other CNS depressants
Elderly may need dose reduction
Prostate patients due to urinary retention
Adverse Effects of morphine
CNS: Mood change, lethargy, delirium, euphoria, pupillary constriction
Respiratory: Decrease RR, Resp arrest, apnea
CV: hypotension, bradycardia, cardiac arrest, shock, coma
GI: N/V, constipation
GU: Urinary retention
Histamine: Itching and hives
Drug interactions with morphine
Hepatically cleared drugs: H2 Blockers, barbituates, warfarin
CNS depressants: ETOH
What type of opioid is codeine?
Mild Narcotic agent
What other drugs are in the same class as codeine?
hydrocodone (Vicodin)
Codeine is _____ as potent as morphine
1/6
Mechanism of action of codeine
Similar to morphine
acts on opioid receptors in CNS to prduce analgesia, euphoria, and sedation
Acts on medullary cough center to depress cough reflex
Drying effects on mucous membranes
Indications for codeine
Mild to moderate pain
Metabolism of codeine happens in the ________
Liver
Elimination of codeine happens in the __________
Kidneys
Onset of codeine
15-30 min
Duration of codeine
3-7 hours
Contraindications of codeine
Pre/post op patients who need to cough and deep breathe
CVA patients
Resp patients
Adverse effects of codeine
Similar to morphine Dry mouth Drowsiness Sedation Depress cough reflex
Drug interactions with codeine
Other CNS depressants
True or false: Codeine is safer for brain injury patients than morphine
True: Doesn’t depress the CNS as much or mask s/s of brain injury
What kind of opioid is pentazocine (Talwin)?
Narcotic Agonist
What other drugs are in the same class as pentazocine (Talwin)?
buprenophine (Bupranex)
butorphanol (Stadol)
nalbuphine (Nubain)
Mechanism of action of pentazocine (Talwin)
Mixed opioid effects
Agonist at some receptors and antagonist at other receptors
Get opioid effect without over doing it.
Indications for pentazocine (Talwin)
Moderate to severe pain
pentazocine (Talwin) is metabolized in the ________
Liver
pentazocine (Talwin) is eliminated through the _____
Kidneys
Onset of pentazocine (Talwin)
15-30 min
Duration of pentazocine (Talwin)
3-7 hours
Contraindications of pentazocine (Talwin)
Resp depression patients
Adverse effects of pentazocine (Talwin)
Withdrawl effects in unknown addicts Resp depression Circulatory depression N/V Dizziness Lightheadedness Euphoria
Drug interactions with pentazocine (Talwin)
Other CNS depressants
True or false: pentazocine (Talwin) is used in patients with hx of addiction
True
Street name for pentazocine (Talwin)
T’s and blues
naloxone (Narcan) is what kind of opioid?
Opioid Antagonist
What other drugs are in the same class as naxolone (Narcan)?
naltrexone (Revia)
Mechanism of Action of naloxone (Narcan)
High affinity for opioid receptor but produce no effect
OPIOID OD ANTIDOTE
Indications for naloxone (Narcan)
Opioid antidote
naloxone (Narcan) onset
When given IV 2-5 minutes
naloxone (Narcan) duration
Short half life
naloxone (Narcan) adverse effects
HTN, N/V, Sweating, Tachy, tremors
Narcan has a short half life therefore….
drug may wear off before narcotic and require multiple doses
With Narcan, Assess and monitor __________
Vital signs frequently
True or false: With Narcan have resuscitation equiptment near by
True
Prototype for Salicylates
Aspirin
Other drugs in the same class as Aspirin
diflunisal
salsalate
Mechanism of action of aspirin
Non-selective COX inhibitor
- anti-pyretic (hypothalamus)
- anti-inflammatory (inhibits prostaglandin synthesis)
- analgesic (inhibits COX 2 and decrease prostaglandins which sensitize pain receptors
- antiplatelet (irrevesible inhibition prostaglandin = decrease platelet aggregation
Indications for aspirin
Fever (adults only)
Pain
Inflammation
Arthritis
Absorption of Aspirin
30 minutes
Mostly absorbs in the small intestines
Suppositories absorb slower
Distribution of aspirin
Highly protein bound
Onset = 30 min
Inflammatory response takes weeks
T 1/2 = 1.5 to 50 hours
Aspirin is metabolized in the __________
Liver
Aspirin is excreted through the _________
Kidneys
Contraindications of Aspirin are:
Peptic ulcers or other bleeding disorders
Anti-coagulation treatment
Gout (increase uric acid, renal or liver patients)
Kids with fever or flu sx = Reye’s Syndrome
Smokers and ETOH patients = decreased gastric mucosa = increase GI bleed
Adverse effects of aspirin
GI: ulcers, bleeding Sedation, confusion Rash, fever Tachy Acute bronchospasm Renal impairement, Na & H20 ret. HA, dizziness Tinnitus
Aspirin drug interactions
Anticoagulants and antiplatelets = increase bleeding
Metabolism of digoxin, phenytoin, cyclosporine, fluconazole
Pregnancy category for Aspirin
1st and 2nd Trimester = C
3rd trimester = D
Aspirin Hypersensitivty
Tinnitus
Vertigo
Bronchospasm
Aspirin Toxicity
Salicylism
-Occurs with long term or high dose tx
S&S: HA, Tinnitus, GI Distress, Resp stim (Increase CO2 loss = alkalosis), drowsiness, confusion
Aspirin Poisoning
Life threatening, Adult 20-25 g Peds 4 g S/S same as toxicity but occur quicker No antidote Tx with gastric suctioning (NG), charcoal to induce vomiting & life support
Drug prototype of Prostaglandin Synthetase inhibitors
Ibuprofen (Advil, Motrin)
Other drugs in the same class as ibuprofen (Advil, Mortim)
Propionic acids -fenoprofen -naproxen (Aleve) -fetoprofen Acetic Acids -indomethacin (Indocin) -ketorolac (Toradol)
Mechanism of Action of ibuprofen
Non-selective COX inhibitor
SAME AS ASPIRIN
Anti-pyretic (Hypothalamus)
Anti-inflammatory (Inhibits prostaglandin synthesis)
Analgesic (Inhibits COX 2 and decrease prostaglandins which sensitize pain receptors)
Anti-platelets (irreversible inhibition prostaglandin = decrease platelet aggregation
Indications for ibuprofen
Same as aspirin
Fever, Pain, Inflammation, Arthritis
Absorption of ibuprofen
Mostly GI Slower with food Analgesic and anti-pyretic effects with in 2-4 hours Anti-inflammatory = days to weeks Highly protein bound
Distribution of ibuprofen
Highly protein bound
Onset = 30 min
Inflammatory response takes weeks
T 1/2 = 1.5-50 hours
Metabolism of ibuprofen
Liver
Excretion of ibuprofen
Kidneys
Contraindications of Ibuprofen
Ulcer or bleeding disorder
Heart pts (Increase risk MI/CVA)
HTN pts
Renal Patients
Adverse effects of ibuprofen
GI: Ulcers, bleeding
HTN
Decreased renal blood flow = renal toxicity
Vision change
Drug prototype for selective COX 2 inhibitor
celecoxib (Celebrex (Rx)
Mechanism of Action of celecoxib (Celebrex)
Selective COX 2 inhibitor
Inhibits prostaglandin synthesis
Indications for celecoxib (Celebrex)
Arthritis
Dysmenorrhea
Absorption of celecoxib (Celebrex)
1-2 weeks for anti-inflam response
celecoxib (Celebrex) is metabolized in the ________
Liver
celecoxib (Celebrex) is excreted through the ____
Feces
Drug interations with celecoxib (Celebrex)
Ace inhibitors
Coumadin = Increase INR
Pregnancy category or celecoxib (Celebrex)
1st and 2nd trimester: C
3rd trimester: D
Drug prototype for Para-aminophenol derivatives
Acetaminophen (Tylenol)
Mechanism of Action of acetaminophen (Tylenol)
Reversible COX inhibitor in periphery
anti-pyretic (hypothalamus)
Inhibits action of chemical that causes vasodilation and sweating
Pain: unk. MOA
ON ANTI-INFLAM EFFECT OR PLATELET AGGREGATION INHIBITION
Does not decrease kidney function
Does not change gastric mucosa (ok for GI ulcer pts.
Indications for acetaminophen
Fever
Mild to mod pain
PEDS
PG women
Absorption of acetaminophen
Rapid and completely absorbed orally
Distribution of acetaminophen
Onset: 30 min
Peak: 1-2 hrs
Duration: 4 hours
Metabolism of acetaminophen
Liver (Hard on the liver)
Excretion of acetaminophen
Kidneys
Contraindications of acetaminophen
Liver pts
Viral hepatitis
ETOH pts (Will increase hepatotoxicity)
Anemia (will exacerbate anemia
Adverse effects of acetaminophen
RARE
Rash, Uticaria, Nausea, Fever, Neutropenia (CA pt), Thrombocytopenia, Jaundice
Pregnancy category for acetaminophen
Ok for PG and lactating women
Acetaminophen toxicity
Signs and Symptoms: Anorexia, N/V, Pallor, Abd Discomfort (RUQ), Jaundice (Later stage)
Acetaminophen Overdose
Can be fatal
Partially metabolized into a toxic metabolite that body converts to a non-toxic form with glutathione
In OD, GLUTATHIONE is quickly depleted
Accum of toxic metabolite occurs = liver damage
Acetaminophen Poisoning
ACETYLCYSTEINE is the antidote
Activated charcoal also used to induce vomiting