Pharmacotherapy Flashcards
For the reduction of pain to promote function.
Pharmacotherapy
Analgesics include:
- NSAIDs
- Acetaminophen
- Corticosteroids
- Injections (LA)
- Opioids
These suppress the action of prostaglandins and thromboxanes by inhibiting cyclooxygenases.
NSAIDs
Effects of NSAIDs.
- Analgesic
- Anti-inflammatory
- Anti-pyretic
- Anti-coagulant
Selective NSAIDs inhibit…
COX-2
Non-selective NSAIDs inhibit…
COX 1 and 2
A type of NSAID that’s called Advil
Ibuprofen
These are used for mild to moderate pain, or post-surgical pain.
NSAIDs
NSAIDs cannot be used in these patients:
- Renal disease
- Asthma
- GI ulcers
Avoid these COX inhibitors if there’s an allergy to sulfa meds.
2
AKA Tylenol
Acetaminophen
The drug of choice for pregnancy.
Acetaminophen
Tylenol MOA
Inhibits COX-3, which acts in the CNS.
Does NOT suppress prostaglandins!
Acetaminophen max dose.
3g/day
Avoid use of Acetaminophen in:
- Liver disease
- Chronic alcoholics
These prevent the breakdown of cell mediators.
Corticosteroids
These are for moderate to severe pain, and TMJ SURGERY.
Corticosteroids
How do you discontinue corticosteroids?
Taper the dose.
Where do corticosteroids work?
Peripherally at the tissue level.
These block voltage-gated Na channels on nociceptors.
Local anesthetics
Long-acting LA.
Bupivacaine
Avoid LA’s in what?
Myositis
These act at nociceptors.
LA’s
Opioids
Act on Mu, Kappa, and Delta receptors.
Opioids
Do not give this drug to someone with chronic pain, bc it can cause dependence.
Opioids
These drugs act on peripheral and central nociceptors.
Opioids
Adjunct analgesics
- Muscle relaxants
- Anxiolytics - Benzodiazepines
- Antidepressants (TCA’s)
- NMDA Receptor Antagonist
Where do adjunct analgesics act?
Centrally
These are not designed to control pain.
Adjunct analgesics
Common muscle relaxants.
- Baclofen
- Tizanidine
- Cyclobenzaprine
Clinical uses of muscle relaxants.
- Masticatory muscle pain
- Muscle pain upon awakening
- Sleep disturbance associated with pain
These drugs act at the tissue level.
NSAIDS
Steroids
These drugs act centrally
Muscle relaxants
Acetaminophen
Opioids
Muscle relaxants act centrally or peripherally.
Centrally
Benzos cause the release of what?
GABA
Function of GABA
Inhibit the motor endplate to cause muscle relaxation.
Benzos end in what?
“azepam”
Benzos may worsen this.
Depression
These are given for chronic pain with sleep disturbances.
Tricyclic antidepressants
Tricyclic antidepressants MOA
Inhibit the reuptake of Serotonin and NE.
Increase the inhibitory descending bulbospinal pathway.
TCA’s.
These drugs are used for chronic pain.
NMDA receptor antagonists
Examples of NMDA receptor antagonsits.
Ketamine
Dextromorphan
You need 2400 mg/day of this drug in order to have anti-inflammatory effects.
A lower does only has anti-analgesic effects.
Ibuprofen
Pain from injury or disease to the nervous system (PNS and CNS).
Neuropathic pain
Classifications of neuropathic pain.
1) Continuous
2) Episodic
Meds used for neuropathic pain.
Anticonvulsants & Capsaicin
Anticonvulsants
Carbamazepine
Oxaycarmazepine
Gabapentin
Pregabalin
Anticonvulsant that decreases the conductance of Na and K, suppressing alpha delta and C fibers.
Carbamazepine
Blocks voltage-gated Na and Ca channels.
Oxycarbazepine
Anticonvulsant that affects voltage gated Ca channels, but the mechanism is uncertain.
Gabapentin
Anticonvulsant that’s similar in effect to gabapentin, binds to a subunit of Calcium channel and reduces neuronal activity.
Pregabalin
Activation of this receptor destroys nociceptive fibers.
TRPV1
This drug activates the TRPV1 Receptor.
Capsaicin
This drug is used as/for:
- Diagnostic aid
- Burning Mouth
- Atypical odontalgia
Capsaicin
Avoid this NSAID in asthma patients.
Ibuprofen
Avoid this drug if have a sulfa allergy.
Celecoxib
This NSAID is for MODERATE pain intensity.
Acetaminophen
This drug is contraindicated for osteoporosis.
Methyl prednisone (osteoporosis)
Avoid this in gastric ulcer.
Ibuprofen
Avoid this in hypercholesterolemia.
Celecoxib
Used for inflamation and severe pain.
Methyl Prednisone
Avoid this type of drug if have gastric ulcers.
NSAIDs
This drug is for CHRONIC pain
.Amitriptyline (Tricyclic Antidepressants)