PHARM III All Lectures Flashcards
What are the two direct/ peripherally acring antispastic agents
Dantrolene and Botulium toxin A
They both alter function of nicotinic-muscle receptors or skeletal muscle fibers
What is the durantion of use and Clin/Ind for cyclobezaprine
Short term in combination with physcial therapy
Do not use for cerebral palsy or spinal cord injury
Has the potentail to lower the SZR threshold, DO NOT USE with tramadol
Can you use cyclobenzaprine and tramadol together
No! Both lower the SZR threshold
Since Cyclobenzaprine is like a TCA, what are its ADE and C/I
DROWSINESS , dry mouth, urinary retention, increadsed occular pressure
SERTONIN SYNDROME
C/I: Recent MI, any heart problems, DO NOT USE w/in 14 days of a MAOI
Hyperthyroidism
Caution in preg.
Orphenadrine is an analog of what other drug and is indicated for what condition
Diphenhydramine
Clinical Use: Treatment of muscle spasm associated with acute painful musculoskeletal conditions
Used short term (2-3 weeks)
Since orphanadrine is an anticholinergic what are its ADE and C/I
Anticholinergic effects: dry mouth (1st to appear); tachycardia, urinary hesitancy or retention, blurred vision, nausea/vomiting, etc.
High risk for confusion in elderly
Contraindications: glaucoma, pyloric or duodenal obstruction, stenosing peptic ulcers, prostatic hypertrophy or obstruction of the bladder neck, and myasthenia gravis
Carisoprodol is metabalized to what.. which is what gives it its anziolytic and sedative effects
Meprobamate
What is the clinical indication of carisoprodol
Relief of discomfort associated with acute, painful musculoskeletal conditions in adults
Used short term (2-3 weeks)
What are the ADE and C/I of carisoprodol
Withdrawl, sedation, dizzyness, HA, SZR,
Caution with ETOH and depressants
High risk of confusion in elderly
DO NOT USE IN PREGNANCY
Can Carisoproldol be used in pregnancy
NO , adverse events have been observed in animal reproduction studies
What is the clinical use and ADE of metaxalone
Clinical Use:
Relief of discomforts associated with acute, painful musculoskeletal conditions
Appears to cause less drowsiness than others
Adverse Effects:
Nausea, gastrointestinal upset, sedation, dizziness, headache, anxiety, or irritability
Serotonin Syndrome
Caution combining with alcohol and other CNS depressants
High risk for confusion in elderly
What is the Clin/use and ADE of methocarbamol
Adjunctive treatment of muscle spasm associated with acute painful musculoskeletal conditions
Treat muscle spasticity associated with tetanus (toxin) poisoning
ADE: BLACK BROWN OR GREEN URINE!
Caution in use wtih ETOH or depressants
C/I iv formulations in pts with renal impairment and hepatic impairment
A pt presents with tetanus poisoning, what Antispasmodic can you use to Tx
Methocarbamol
What is the clin use and ADE of tizanidine
Clinical Use:
Muscle spasticity
Short acting agent
Adverse Effects:
Drowsiness is the most prominent adverse effect
Start low and titrate the dose up (2mg TID)
What is the most prominent ADE of tizanidine
Drowsiness
Can also cause drymouth, HOTN, asthenia, and hepatotoxic (A2 agonist)
Baclofen inhibits the release of what substance in the spinal cord
Substance P
Which is better, baclofen or diazapem
Baclofen casues as much antispamodic activity as diazapem with out the same amount of sedation which can be a good thing
Can you use baclofen in SZR pts
Increased seizure activity reported in epileptic patients, therefore withdraw slowly
Can you use Diazapam in preg. Pts
Cat D, no
A pt presetns with post herpatic neuralgia, what medication can help
Gabapentin and Gabapentin enacarbil (prodrug)
Can Gabapentin Enacarbil be used for epilespy
prodrug for gabapentin and is indicated for post herpetic neuralgia and restless leg syndrome, NOT epilepsy
How are gabapentin and pregabalin eliminated
eliminated renally; adjustments may be necessary for renal dysfunction and hemodialysis
What are the ADE of Gabapentin and pregabalin
Dizziness, and wt gain
Gaba: drowsiness and fatigue
Pre: Sex Dyf., angioedema,
What is the antidote to Botulinum Toxin
Equine Botulinum Antitoxin
Do NMBA effect the CNS
NO! Only act periphearlly
A female pt presents with a unilateral severe HA, desribes it as pulsating that is aggrevated by physical activity
Complains of Nauseas, photophobia, and phonophobia, tyopically lasting up from 4-72 hours
What kind of HA is this
Migraine
A female ptr presents with cc of HA x 1 day
States pain is Bilateral and has a pressing/ tighting sensation, is not effected by physical activity, denies nausea, but sometimes has photo/phono phobia
Think what kind of HA
Tension
A male pt present with cc of HA x 45 minutes
Describes it as unilateral severe piercing sensation
States he has ipsilateral nasal congestion, miosis, and ptosis, and frequently the HA occur at night
What kind of HA
Cluster
What does the acronym snooping refer to with HA
S: systemic symptoms or signs (e.g., fever, weight loss), or systemic disease (e.g., cancer)
N: neurologic symptoms or signs
O: onset sudden (e.g., thunderclap headache)
O: onset late in life (> 40 years)
P: pattern change (progressive with loss of headache-free periods; change in type)
Go SNOOP for an alt cause
What does the Acronym POUNDing mean when it comes to HA
Pulsatile One day duration or less Unilateral N/V Disabling intensity
POUNDING=migraine
What is the criteria to Dx a Migraine without aura
Al least 5 attacks that last 4-72 hours with at least 2 of the follwoing: Unilateral Pulsating Mod-severe pain Aggrivated by phycical activity
During the HA at least 1 of the follwing s/s:
N/V, photo or phonophobia
WHat is the Dx criteria for Migrain with aura
A least TWO HA with at least 1 S/s of aura ( Visual, sensory, speach, language, motor, brainstem, or retinal)
With at least two of the following:
- One aura symptom spreads gradually over ≥5 min, and/or two or more symptoms occur in succession
- Each aura symptom lasts 5-60 min
- At least one aura symptom is unilateral
- The aura is accompanied, or followed within 60 min, by headache
What is the gene that is associated with genetic predisposition of migraines
50% of cases of familial hemiplegic migraine (FHM) are caused by mutations within the CACNL1A4 gene on chromosome 19
What is the important mediator in Migraines
Seretonin (5-HT)
What is the neuronal theroy of Migraines
Migraine aura may be explained by the neuronal theory in that the positive (e.g., light around the edges of the field of vision) and negative (e.g., blind spots or tunnel vision) symptoms of the migraine aura are caused by neuronal dysfunction, not ischemia
Activation of what system is the reason for pain in a migraine
Pain results from activity within the trigeminovascular system
Activation of trigeminal sensory nerves triggers the release of vasoactive neuropeptides:
- Calcitonin gene-related peptide [CGRP]
- substance P
- neurokinan A
These Produce vasodilation and dural plasma extravasation leading to neurogenic inflammation
What are the 4 phases of a Migraine
- Premonitory S/s
(phono/photophobia, hyperosmia, anxiety, depression , euphoria, polyuria, diarrhea, stiff neck, tawning, food cravings, ect) - Aura
(Positive or negative visual (most often), sensory, or motor symptoms that develop over 5-20 minutes and last for usually 60 minutes, with the headache usually following within 60 minutes) - HA
( Generally begins with a dull ache that intensifies over a period of minutes to hours to a throbbing headache, which worsens with each arterial pulse) - Resolution
(Fatigue, irritable, impaired concentration, scalp tenderness, mood changes (e.g., refreshed and euphoric or malaise and depression))
What are the short term goals of Migraine Tx
Treat attacks rapidly and consistently without recurrence
Restore the subject’s ability to function
Minimize the use of backup and rescue medications
Optimize self-care and reduce subsequent use of resources
Cause minimal/no adverse effects
Be cost-effective
What are the long term goals of Migraine Tx
Reduce migraine frequency, severity, and disability
Improve quality of life
Prevent headache
Avoid escalation of headache medication use
Educate and enable patients to manage their disease
What is the primary end point of Migraine Tx
Headache response (pain-relief or pain-free within 2 hours) (Primary endpoint)
What is the MIDAS
Migraine disabilty assesment
What is a MIDAS grade I
MIDAS score of 0-5
Means little or no disability
What is a MIDAS grade II
Score of 6-10
Means mild disability
What is a MIDAS grade III
Score from 11-20
ind. moderate disabilty
What is a MIDAS grade IV
Score greater than 21+
Ind. severe disability
A score of less than 2 on the Monitoring Headache Response Migraine-ACT Questionnaire means what
Score of ≤ 2 may indicate a need to change the patient’s acute medication therapy
Score of ≤ 1 may indicate that the change is mandated
What is the Sterp care across migraine Tx
HA 1 = treat with NSAID
HA 2= Tx w/ NSAID
HA 3= Tx with NSAID
If unsuccessful response in more than 2 HA Tx with NSAID then treat HA 4 with triptan
What is the Step Care within Migriane Tx
HA treated with an NSAID yet unsuccesful after 2 hrs
Then treat with a triptan
What is the stratified Care approach to Migraine Tx
PTs with MIDAS grade II= NSAID
MIDAS grade III-IV= triptan
What are the two specific therapies for migraines
Ergotamines and Triptans
Is acetaminophen better or worse at treating HA than NSAIDs
Pain-free response at 2hrs found inferior to other commonly used NSAIDs and aspirin
Are there any studies supporting the use of Butabital for HA
NOPE
Can pts taking MAOI take Midric C-IV
NO!
Can pts with HTN take Midrin C-IV
No, isometheptane causes vasocon
What should pts who take Excedrin be cautioned of with daily use
Caution of caffeine withdrawal headaches if taking daily
How long can NSAIDs be used in HA tx
Limit use to < 15 days per month to prevent drug overuse headache
How do NSAIDS help Tx migraines
magraines: prevents neurogenically mediated inflammation in the trigeminovascular system
Should NSAIDS be used in pts with PUD, Renal insuf, bleeding D/o
No can cause bleeding and remember renal trifecta
What is the most effective route for ergotamines
Rectal !
What is ergotism
Ergotism: intense vasoconstriction resulting in peripheral vascular ischemia and possible gangrene, as well as possibly tonic-clonic convulsions accompanied by mania and hallucinations
From taking ergotamine
Can preg pts take ergotamine
NO! Cat X
Ca Triptans and ergotamine be used together
Do not use within 24 hours of a triptan
Can ergotamines be used in pts with CVDz, Hepatic or Renal Dz
No!
Long term use with ergotamines can cause what valvular heart problems
Fibrotic valve thickening (e.g., aortic, mitral, tricuspid) with long-term use
Can you give ergotamine alone
No, cuases N/V so need to premedicate
What medication is used to treat status migraniosus
Dihydroergotamine IV (45)
What is the advantage of using Dihydroergotamine vs ergotamine
Dihydroergotamine has less ADE
Can you use dihydroergotamine and Triptans together
Do not use within 24 hours of a triptan
What are the highest likely hood of success triptans when treating migraines
The highest likelihood of consistent success was found with rizatriptan, eletriptan, and almotriptan
ERA!
How many times per month can a pt use triptans
Limit use to ≤ 9 days per month
What pts can Triptans NOT be used in
Patients with a history of ischemic heart disease (e.g., angina, previous MI, etc.), uncontrolled hypertension, and cerebrovascular disease (e.g., stroke)
Do not use in patients with hemiplegic and basilar migraines
How should the 1st does of triptans be administered
Patients at risk of coronary artery disease should have 1st triptan dose in the clinic with vitals ± ECG
Consider administering the 1st triptan dose in the clinic with vitals ± ECG in patients with a likelihood of unrecognized coronary disease (i.e., significant hypertension, hypercholesterolemia, obese patients, diabetics, smokers, etc.)
If a pt is taking a triptan for HA, can you also give then an ergotaine
Do not use within 24 hrs of ergotamines
Can triptans and SSRIs be used together
Caution with other serotonin active medications serotonin syndrome
What is seretonin syndrome
A potentially life-threatening drug reaction resulting from excess serotonin
Presents as a clinical triad of abnormalities:
-Cognitive effects
-Neuromuscular dysfunction
-Autonomic dysfunction
A pt presents to the ED with AMS, myoclonus/ hyperreflexia, and hyperthermia
What triad of S/s if this reflecting
Seretonin syndrome
What is the Tx approach to seretonin syndrome
Withdrwal offending agent
Supportive care
Cyporheptadine
Which Triptan contains a sulfa group and can not be given to pts with sulfa ALLRGY
Almotriptan
If a pt is taking propranolol, what adjustmnet must be made to Rizatriptan Rx
Decreased the dose to 5 mg in pts taking propranolol
If a pt is taking clarithromycin ( a CYP3A4 Inh.) how must they take eletriptan
Can not be used with in 72 hours
Can preg. Pts used butophanol
When used in pregnancy, abnormal fetal heart rate was noted
Butorphanol as a partial Mu agonist has what ADE
HOTN, N/V, blurred vision, sedation
What is the best way to prevent Medication over use headaches
Prevention is best: limit use of migraine therapies to 2 days/week
Treat by discontinuing the offending agent
- Takes 3 to 8 weeks following medication withdrawal to evaluate efficacy
- May bridge with prophylactic HA medications
What are the thresholds to start a pt on migraine prophylaxis
Frequency and duration (generally accepted thresholds):
> 4 HA/month or
Last >12 hours
What is an adequate trial time frame for a migraine prophylaxis tx
1-2 months
How is Treatment generally administered for migraine prophylaxasis
Treatment is generally continued for 3-6 months after the frequency and severity of headaches decrease, and then is tapered gradually (over 2-4 weeks) and discontinued
A pt presents with recurring headaches that are in a predicatble pattern (menstral migraines)
What is an approaprite prophylaxis
NSAID at the time of the HA
When can BB be used in Migraine Tx
In healthy or comorbid HTN, angina, or anxiety
A pt with comorbid depression or insomina, with migraines should get what meds
TCAs
A pt with SZR and Migraines should get what Dx
Anticonvulsants
Topiramate causes a 2-4 fold increase in what condition
Kidney stones
Can also cause Met Acidosis
If a pt has astham or raynouds can they take BB
NO!
What is the NSAID used for Mentrual migraines
Naproxen
What electrolyte is a useful prophylaxis of migraines in pregnancy
Magnesium
What expensive medication can be considered for pts with 15 or more HA a month
Botulism toxin A
Is a pt is pregnant, what is the best Tx of their migraines
Acetaminophen for active attacks
Mag for prophylaxis
What is the most common type of primary HA
Tension HA
What seperates a tension HA from a migriane
Differences:
Lacks premonitory symptoms and aura
Pain usually mild to moderate in intensity, bilateral, and described as dull, non-pulsatile tightness or pressure that occurs in a hatband distribution around the head
Disability minor in comparison to a migraine
Routine physical activity does not affect headache severity
What is the criteria for Dx of a Acute Tension HA
At least TEN episodes occuring more than 1 day a momth lasting form 30minutes to 7 days
With at least 2 of the followingL Bilateral Pressing/tightning Mild to mod pain Not aggrevated by physical activity
Can not have N/V or either photo/phonophobia
What is the critera for chronic tension HA
HA more than 15 days per month for more than 3 months
Lasting hours or continous
Meeting at least 2: Bilateral Pressing/ tightning Mil-mod pain Not aggrevated by phys. Activity
Can not have N/V or photophobia+phonophobia
When should prophylaxis be considered for tension HA
Consider if headache frequency (> 2/week), duration (> 3-4 hours), or severity results in medication use or significant disability
What are the ADE of using a TCA (amitryptyline) for tension HA
: anticholinergic side effects, weight gain, orthostatic hypotension, and arrhythmia concerns
Should be taken at night
1st degree relatives of people with cluster HA have what risk of having it as well
1st degree relatives have a 14-fold increased risk for also having cluster headaches
A pt presents to the exam room , pacing back and forth holding his head, states that the pain is only one one side of his head, and is severe ..
what kind of HA could this be
Cluster HA
What is the criterea to Dx a cluster HA
A least FIVE attacks that are severe with unilateral eye pain lasting 15-180 minutes if untreated
HA is accompanied by at least 1 ipsilateral S/s
What is the Tx appraoch to Cluster HA
O2 is the 1st line Tx
Sumatriptan is the most effective Rx
What is T1DM
results from β-cell destruction, usually leading to an absolute insulin deficiency