Pharm 2 continued

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Contraindications/ Precautions of Opioid Agonists
* Morphine is contraindicated after biliary tract surgery.
* Morphine is contraindicated for premature infants during and after delivery because of respiratory depressant effects.
* Meperidine is contraindicated for clients who have kidney failure because of the accumulation of normeperidine, which can result in seizures and neurotoxicity.
* Morphine, fentanyl, meperidine, methadone, codeine, oxycodone, and hydromorphone are pregnancy category risk \n C medications
* Clients who are pregnant (risk of physical dependence of the fetus)

o Clients in labor (risk of respiratory depression in the newborn and inhibition of labor by decreasing uterine contractions)



* Use cautiously with the following \n o Clients who have asthma, emphysema, or head injuries; infants; and older adult clients (risk of respiratory \n depression)
* Clients who are extremely obese (greater risk for prolonged adverse effects because of the accumulation of medication that is metabolized at a slower rate)
* \
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INTERACTIONS of : CNS depressants (barbiturates, phenobarbital, benzodiazepines, alcohol) have additive CNS depression action. CLIENT EDUCATION
* Avoid the use of these medications in conjunction with opioid agonisis
* Avoid consumption of alcohol.
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INTERACTIONS of : Anticholinergic agents (atropine or scopolamine), antihistamines (diphenhydramine), and tricyclic antidepressants (amitriptyline) have additive anticholinergic effects (constipation, urinary retention).CLIENT EDUCATION
Increase fluids and dietary fiber to prevent constipation.
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INTERACTIONS of : Meperidine can interact with monoamine oxidase inhibitors (MAOIs) and cause hyperpyrexic coma, characterized by excitation, seizures, and respiratory depression. NURSING ACTION :
Avoid the use of meperidine with MAOls to prevent occurrence of this syndrome.
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INTERACTION of : Antihypertensives have additive hypotensive effects. CLIENT EDUCATION :
Refrain from using opioids with antihypertensive agents.
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INTERACTIONS of : Additional medications (amphetamines, clonidine, and dextromethorphan) can increase opioid-induced analgesia. CLIENT EDUCATION:
Avoid taking other medications that have a CNS effect with opioid medication.
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NURSING ADMINISTRATION of : Opioid Agonists
* Assess pain level on a regular basis. Document the client's response.
* Take baseline vital signs. If the respiratory rate is less than 12/min, notify the provider and withhold the medication.
* Follow controlled substance procedures.
* Double-check opioid doses with another nurse prior to administration.
* Administer IV opioids slowly over 4 to 5 min. Have naloxone and resuscitation equipment available.
* Warn clients not to increase dosage without consulting the provider.
* For clients who have cancer, administer opioids on a fixed schedule around the clock. Administer supplemental doses as needed.
* Advise clients who have physical dependence not to discontinue opioids abruptly. Opioids should be withdrawn slowly, and the dosage should be tapered over a period of 3 days.
* Closely monitor patient-controlled analgesia (PCA) pump settings (dose, lockout interval, 4-hr limit). Reassure clients regarding safety measures that safeguard against self-administration of excessive doses. Encourage clients to use
* PCA prophylactically prior to activities likely to augment pain levels.
* When switching clients from PCA to oral doses of opioids, make sure the client receives adequate PCA dosing until the onset of oral medication takes place.
* The first administration of a transdermal fentanyl patch will take several hours to achieve the desired therapeutic effect. Administer short-acting opioids prior to onset of therapeutic effects and for breakthrough pain.
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Nursing Evaluation of Medication effectiveness of : Opioid Agonists
Depending on the therapeutic intent, effectiveness can be evidenced by the following.



* Relief of moderate to severe pain (postoperative pain, cancer pain, myocardial pain)
* Cough suppression
* Resolution of diarrhea
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Agonist-Antagonist Opioids Prototype medication
Butorphanol
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Agonist-Antagonist Opioids : Other medications
* Nalbuphine
* Buprenorphine
* Pentazocine
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Agonist-Antagonist Opioids : Route of Administration
* Butorphanol: IV, IM, intranasal
* Nalbuphine: IV, IM, subcutaneous
* Buprenorphine: IV, sublingual, transdermal
* Pentazocine: IV, IM, subcutaneous
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Agonist-Antagonist Opioids : Expected Pharmacological Action :
* These medications act as antagonists on mu receptors and agonists on kappa receptors, except for buprenorphine, whose agonist/antagonist activity is on opposite receptors.
* Compared to pure opioid agonists, agonist-antagonists have the following.
* Low potential for abuse, causing little euphoria. In fact, high doses can cause adverse effects (anxiety, restlessness, mental confusion).
* Less respiratory depression
* Less analgesic effect
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Agonist-Antagonist Opioids- therapeutic uses :,
* Relief of moderate to severe pain
* Treatment of opioid dependence (buprenorphine)
* Adjunct to balanced anesthesia
* Relief of labor pain
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Agonist-Antagonist Opioids Complications of : Abstinence Syndrome
Cramping, hypertension, vomiting, fever, and anxiety
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Abstinence Syndrome Nursing Actions :
* This syndrome can be precipitated when these medications are given to clients who are physically dependent on opioid agonists.
* Advise clients to stop opioid agonists (morphine) before using agonist-antagonist medications (pentazocine).
* Avoid giving to clients if undisclosed opioid use is suspected.
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Agonist-Antagonist Opioids Complications of Sedation, respiratory depression - NURSING ACTIONS:
* Have naloxone and resuscitation equipment available.
* Monitor for respiratory depression.
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Agonist-Antagonist Opioids Complications of Dizziness : Client Education:
Use caution in standing up and avoid driving or using heavy machinery.
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Agonist-Antagonist Opioids Complications of Headache - Nursing Actions :
* Monitor for headache.
* Assess level of consciousness.
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Agonist-Antagonist Opioids Contraindications:
Use cautiously in clients who have a history of myocardial infarction, kidney or liver disease, respiratory depression, or head injury, and clients who are physically dependent on opioids.
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INTERACTIONS Agonist-Antagonist Opioids of CNS depressants and alcohol can cause additive effects: NURSING ACTIONS
* Use together cautiously.
* Monitor respirations.
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INTERACTIONS Agonist-Antagonist Of Opioid agonists can antagonize and reduce analgesic effects of the opioid-NURSING ACTIONS:
Do not use concurrently.
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Agonist-Antagonist Opioids Nursing Administration:
* Obtain baseline vital signs. If the respiratory rate is less than 12/min, withhold the medication and notify the provider. QeBP
* Have naloxone and resuscitation equipment available.
* Assess clients for opioid dependence prior to administration. Agonist-antagonists can trigger withdrawal manifestations.

\
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Agonist-Antagonist Opioids : CLIENT EDUCATION
* Do not increase dosage without consulting the provider.


* Use caution when getting out of bed or standing. Do not operate heavy machinery or drive until CNS effects are known.
* • Do not increase dosage without consulting the provider.
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Agonist-Antagonist Opioids- NURSING EVALUATION OF MEDICATION EFFECTIVENESS:

\
Monitor for improvement of manifestations (relief of pain).
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OPIOID ANTAGONISTS : PROTOTYPE MEDICATION:
Naloxone
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OPIOID ANTAGONISTS- other medications
* Naltrexone
* Methylnaltrexone
* Alvimopan

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OPIOID ANTAGONISTS -ROUTE OF ADMINISTRATION:
* Naloxone: IV, IM, subcutaneous


* Naltrexone: Oral, IM
* Methylnaltrexone: Subcutaneous
* Alvimopan: Oral
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OPIOID ANTAGONISTS-EXPECTED PHARMACOLOGICAL ACTION

Opioid antagonists interfere with the action of opioids by competing for opioid receptors. Opioid antagonists have no effect in the absence of opioids.

THERAPEUTIC USES

* Treatment of opioid abuse by preventing euphoria (naltrexone)
* Reversal of effects of opioids (respiratory depression \[naloxone\])
* Reversal of respiratory depression in an infant (naloxone)
* Reversal of severe opioid-caused constipation in clients who have late-stage cancer or other disorders (methylnaltrexone, alvimopan)
Opioid antagonists interfere with the action of opioids by competing for opioid receptors. Opioid antagonists have no effect in the absence of opioids.
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OPIOID ANTAGONISTS -THERAPEUTIC USES:
\
* Treatment of opioid abuse by preventing euphoria (naltrexone)
* Reversal of effects of opioids (respiratory depression \[naloxone\])
* Reversal of respiratory depression in an infant (naloxone)
* Reversal of severe opioid-caused constipation in clients who have late-stage cancer or other disorders (methylnaltrexone, alvimopan)
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OPIOID ANTAGONISTS Complications of Tachycardia and tachypnea: Nursing Actions
* Monitor heart rhythm (risk of ventricular tachycardia) and respiratory function.
* Have resuscitative equipment, including oxygen, on standby during administration.
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OPIOID ANTAGONISTS Complications of Abstinence Syndrome
Cramping, hypertension, vomiting, and reversal of analgesia



\
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OPIOID ANTAGONISTS Complications of Abstinence Syndrome  -NURSING ACTIONS:
These manifestations can occur when given to clients physically dependent on opioid agonists.
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OPIOID ANTAGONISTS CONTRAINDICATIONS/PRECAUTIONS

\
\
* Opioid antagonists are Pregnancy Risk Category B, except Naltrexone, which is Pregnancy Risk Category C.
* Naloxone and naltrexone are contraindicated in clients who have opioid dependency.
* Naltrexone is contraindicated for clients who have acute hepatitis or liver failure and during lactation.
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OPIOID ANTAGONISTS Nursing Administration
* Naloxone has rapid first-pass inactivation and should be administered IV, IM, or subcutaneously. Do not administer orally.
* Observe withdrawal manifestations or abrupt onset of pain. Be prepared to address the need for analgesia if given for postoperative opioid-related respiratory depression.
* Titrate naloxone dosage to achieve reversal of respiratory depression without full reversal of pain management \n effects.
* Rapid infusion of naloxone can cause hypertension, tachycardia, nausea, and vomiting.
* Half-life of opioid analgesic can exceed the half-life of naloxone (60 to 90 min).
* Monitor respirations for up to 2 hr after use to assess for recurrence of respiratory depression and the need for repeat dosage of naloxone.
* Alvimopan is only administered for a 7-day period due to increased risk for myocardial infarction in prolonged
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OPIOID ANTAGONISTS -NURSING EVALUATION OF MEDICATION EFFECTIVENESS:
* \
* Reversal of respiratory depression
* Respirations are regular.
* Client is without shortness of breath.
* Respiratory rate is 12 to 20/min in adults and 30 to 60/min in newborns.
* Reduced euphoria in alcohol dependency and decreased craving for alcohol in alcohol dependency (naltrexone)
* Severe opioid-induced constipation (methylnaltrexone, naloxegol) and opioid-induced ileus (alvimopan) are relieved.
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Migraine Medications Prototype Medications
* Aspirin-like medications: Acetaminophen, NSAIDs (aspirin, naproxen)
* Serotonin receptor agonists (triptans): Sumatriptan (oral, subcutaneous, inhalation, transdermal)
* Ergot alkaloids
* Ergotamine (oral, sublingual, rectal)
* Dihydroergotamine (IV, IM, subcutaneous, intranasal)
* Beta blockers: Propranolol (oral) \n Anticonvulsants: Divalproex (oral), topiramate
* Tricyclic antidepressants: Amitriptyline (oral)
* Estrogens: Estrogen (gel, patches)
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Migraine Medications Other medications
* Triptans: Almotriptan, frovatriptan, naratriptan, zolmitriptan
* Ergot alkaloids: Ergotamine and caffeine
* Combination OTC analgesics: Acetaminophen, aspirin, caffeine
* Other combinations: Isometheptene, dichloralphenazode/acetaminophen
* Isometheptene relieves headaches through vasoconstriction of arterioles.
* Dichloralphenazone has sedative properties.
* Acetaminophen is a mild analgesic.
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Migraine Medications EXPECTED PHARMACOLOGICAL ACTION: 
Migraine medications prevent inflammation and dilation of the intracranial blood vessels, thereby relieving migraine pain.



\
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Migraine Medications -THERAPEUTIC USES:
\
* Some medications are used as abortive therapy to stopla migraine after it begins or after prodromal manifestations start. These include nonsteroidal anti-inflammatory drugs (NSAIDs) and combination anti-inflammatory medications, triptans, and ergot alkaloids.


* Other medications are used as prophylactic therapy to help prevent a migraine headache. Preventive agents include beta blockers, anticonvulsants, amitriptyline, and estrogens.
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Migraine Medications -COMPLICATIONS : Bone marrow suppression -Nursing Actions :
Periodically monitor CBC, including platelets.
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Bone marrow suppression - CLIENT EDUCATION:
Observe for indications of easy bruising and bleeding, fever, or sore throat, and notify the provider If they occur.

\
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Migraine Medications -COMPLICATIONS Gastrointestinal (GI) distress
\
\
* Abdominal pain, ulceration, nausea, vomiting, and diarrhea or constipation
* 
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Gastrointestinal (GI) distress NURSING ACTIONS:
Monitor for Gl bleeding (coffee-ground emesis; bloody or black tarry stools; abdominal pain).
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 Gastrointestinal (GI) distress CLIENT EDUCATION:
Take with food, milk, or antacid
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Migraine Medications -Myocardial infarction (MI) or stroke -NURSING ACTIONS:
\
* Monitor cardiac status, especially in older adult clients and clients who have a history of cardiac disease.
* All NSAIDs except aspirin increase the risk of thrombotic events.
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Migraine Medications -COMPLICATIONS  Chest pressure (heavy arms or chest tightness)

CLIENT EDUCATION
* Medications have increased risk for these manifestations; however, the manifestations are self-limiting and not dangerous.


* Notify the provider for continuous or severe chest pain.
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Migraine Medications -COMPLICATIONS  Coronary artery vasospasm/angina -NURSING ACTIONS;
Do not administer to a client who has or is at risk for koronary artery disease (CAD).
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Migraine Medications -COMPLICATIONS Teratogenesis -NURSING ACTIONS: 
The medication should be avoided in clients who are pregnant, trying to become pregnant, or are not using adequate contraception.
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Migraine Medications -COMPLICATIONS : Gastrointestinal discomfort
Nausea and vomiting
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Gastrointestinal discomfort : Nursing Actions
Administer an antiemetic (metoclopramide).
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Migraine Medications -COMPLICATIONS : Acute or chronic toxicity (ergotism)
Muscle pain, paresthesias in fingers and toes; peripheral ischemia





\
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Acute or chronic toxicity (ergotism) -NURSING ACTIONS
\: Stop medication and immediately notify the provider if manifestations occur.

\
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Physical dependence - NURSING ACTIONS:
* Medication should not be taken daily on a long-term basis.
* Notify the provider if manifestations occur.

\



\


\
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Physical dependence : CLIENT EDUCATION
\
* Do not exceed the prescribed dose.
* Medications can cause manifestations of withdrawal (headache, nausea, vomiting, restlessness).

\
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Migraine Medications -COMPLICATIONS -Fetal harm or abortion -Nursing Actions
Avoid using this medication during pregnancy.

\
\
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Fetal harm or abortion  CLIENT EDUCATION
\: Use additional contraception while using the medication.
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Migraine Medication Complications (Beta blockers: propranolol )Extreme tiredness, fatigue, depression, asthma exacerbation CLIENT EDUCATION:
Observe for manifestations and notify the provider if they occur.
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Migraine Medicine Complications-Bradycardia, hypotension - NURSING ACTIONS



\
* Monitor heart rate and blood pressure.
* Notify the provider of significant change.
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Migraine Medicine Complications-Bradycardia, hypotension - Client Education
Take apical pulse prior to dosing
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Migraine Medicine Complications- GI Distress
Nausea , vomiting, diarrhea, dyspepsia; indigestion
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Migraine Medicine Complications- GI Distress : Nursing Actions
Reposts manifestations to provider
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Aspirin like drugs : NSAIDS , acetaminophen combination causes :
Bone marrow suppression , GI distress , MI of stroke
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Serotonin receptor agonists ( Tristan’s) : sumatriptan causes :
Chest pressure , coronary artery vasospasm/ angina , dizziness, teratogenesis
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Ergot alkaloids : ergotamine and dihydroergotamine causes
Gastrointestinal discomfort, acute or chronic toxicity, physical dependence and fetal harm or abortion
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Migraine Medicine Complications- Neural tube defects NURSING ACTIONS: 
Avoid use during pregnancy.



\
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Neural tube defects CLIENT EDUCATION: 
Use additional contraception if using this mediation.
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Migraine Medicine Complications- Hepatitis -Nursing Action
\


* Monitor liver enzymes.
* Notify the provider of lethargy or fever.

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Migraine Medicine Complications- Pancreatitis - Client Education
Report abdominal pain, nausea, vomiting, and anorexia. Medication should be discontinued. Other adverse effects include fatigue, weight gain, tremor, bone loss, and reversible hair loss.
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Migraine Medication Anticholinergic effects Complications
\


Dry mouth, constipation, urinary retention, blurred vision, tachycardia
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"Anticholinergic effects Nursing Actions
* Increase daily fiber intake.
* Increase physical activity by engaging in regular exercise.
* Administer stimulant laxatives (bisacodyl) to counteract reduced bowel motility, or stool softeners (docusate sodium) to prevent constipation.
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Anticholinergic effects Client education
* Increase fluid intake, sip fluids throughout the day, chew sugarless gum or suck on sugarless hard candy, and use an alcohol-free mouthwash.
* Void just before taking medication and then every 4 hr. Report urinary retention to the provider.
* Report blurred vision.



\
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Migraine Medicine Complications Drowsiness or dizziness - CLIENT EDUCATION:
Avoid driving or operating heavy machinery until medication effects are known.
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Migraine Medicine Contraindications: Ergotamine
* Contraindicated in clients who have renal and/or liver dysfunction, sepsis, hypertension, history of myocardial infarction, and CAD, as well as during pregnancy.
* Pregnancy Risk Category X.
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Migraine Medicine Contraindications: Triptans
\


* Contraindicated in clients who have liver failure, ischemic heart disease, a history of myocardial infarction, uncontrolled hypertension, and other heart diseases.
* Pregnancy Risk Category C. "
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Migraine Medicine Contraindications: Propranolol
* Contraindicated in clients who have greater than first-degree heart block, bradycardia, bronchial asthma, cardiogenic shock, or heart failure.
* Use with caution in clients taking other antihypertensives or who have liver or renal impairment, diabetes mellitus, or Wolff-Parkinson-White syndrome.
* Pregnancy Risk Category C.
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Migraine Medicine Contraindications-Divalproex
* Contraindicated in clients who have liver disease.
* Pregnancy Risk Category D.
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Migraine Medicine Contraindications-Amitriptyline
\


* Contraindicated in clients who have recent MI or within 14 days of a MAOI.
* Use with caution in clients who have seizure history, urinary retention, prostatic hyperplasia, angle-closure glaucoma, hyperthyroidism, and liver or kidney disease.
* Pregnancy Risk Category C.



\
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Migraine Medicine Contraindications-Aspirin-like drugs
* Most NSAIDS are Pregnancy Risk Category C, though if taken later in pregnancy, can result in Pregnancy Risk Category D.
* Contraindicated in clients who have severe renal/hepatic disease.
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Migraine Medicine Contraindications-Acetaminophen
\


• Acetaminophen is Pregnancy Risk Category B.



• should not be used alone, but only in combination with other medications.
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Migraine Medication Interactions- NSAIDs can reduce the effectiveness of antihypertensives, furosemide, thiazide diuretics, and oral antidiabetic medications. NURSING ACTIONS: 
Monitor for medication effectiveness.
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Migraine Medication Interactions -Corticosteroids, alcohol, and tobacco can increase GI effects. CLIENT EDUCATION
\: Do not use these together.



\
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Migraine Medication Interactions-NSAIDs can increase levels of oral anticoagulants and lithium. NURSING ACTIONS
\: Monitor medication levels.
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Migraine Medication Interactions. There is an increased risk of bleeding with the use of other NSAIDs, thrombolytics, antiplatelets, anticoagulants, and salicylates. NURSING ACTIONS
* Clients who take medications together should use caution.
* Monitor for bleeding.
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Migraine Medication Interactions - Concurrent use of MAOIs can lead to MAOI toxicity. NURSING ACTIONS
\: Do not give triptans within 2 weeks of stopping MAOIs.



\
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Migraine Medication Interactions-Concurrent use with ergotamine or another triptan can cause a vasospastic reaction. NURSING ACTIONS
\: Avoid concurrent use of these medications.
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Migraine Medication Interactions-Selective serotonin reuptake inhibitors (SSRIs) taken with triptans can cause serotonin syndrome (confusion, agitation, hyperthermia, diaphoresis, possible death). NURSING ACTIONS: 
Do not use medications together.
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Migraine Medication Interactions-Concurrent use with triptans can cause a vasospastic reaction. NURSING ACTIONS
\: Triptans should be taken at least 24 hr apart from an ergotamine medication..



\:
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Migraine Medication Interactions-Some HIV protease inhibitors, antifungal medications, macrolide antibiotics, and grapefruit juice can increase ergotamine levels, causing increased vasospasm. NURSING ACTIONS
Do not use together.
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Migraine Medication Interactions-Verapamil and diltiazem have additive cardiosuppression effects. NURSING ACTIONS:
If medications are used together, monitor ECG, heart rate, and blood pressure.





\
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Migraine Medication Interactions-Diuretics and antihypertensive medications have additive hypotensive effects. NURSING ACTIONS:
Monitor blood pressure. Hold and notify the provider if systolic blood pressure is less than 90 mm Hg.
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Migraine Medication Interactions-Propranolol can mask the hypoglycemic effect of insulin and prevent the breakdown of fat in response to hypoglycemia. NURSING ACTIONS
\
* Use with caution.
* Monitor blood glucose.
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Migraine Medication Interactions-NSAIDs, erythromycin, and salicylates can cause divalproex toxicity. NURSING ACTIONS: 
Monitor medication levels.



\


\
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Migraine Medication Interactions- Benzodiazepines, opioids, antihistamines, and alcohol can cause CNS depression. NURSING ACTIONS
\: Do not use together.

\
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Migraine Medication Interactions-Divalproex can increase levels of phenobarbital and phenytoin. NURSING ACTIONS:
Monitor medication levels.
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Migraine Medication Interactions-Increase the effects of warfarin. NURSING ACTIONS
\
* Monitor for therapeutic effects of warfarin with PT and INR. Dosage can need to be adjusted.
* Monitor for bleeding.

\
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Migraine Medication Interactions-Barbiturates, CNS depressants, antihistamines, over-the- counter sleep aids, and alcohol can cause additive CNS depression. NURSING ACTIONS: 
Do not use together. \n \n
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Migraine Medication Interactions-Cimetidine can increase amitriptyline levels.

. NURSING ACTIONS: 
Monitor medication effects.
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Migraine Medication Interactions-MAOIs can increase CNS excitation or cause seizures.

NURSING ACTIONS: 
Do not give amitriptyline within 2 weeks of stopping MAOIs.
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Migraine Medication Nursing Administration
* Antiemetics, preferably metoclopramide, are useful as adjunct medications in migraine treatment.
* Use caution in case of orthostatic hypotension (amitriptyline, propranolol).
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Migraine Medication Nursing Administration - Client Education
* Abortive medications should not be used more than 2 days a week.
* If having migraines, avoid trigger factors that cause stress and fatigue (consumption of alcohol and tyramine-containing foods \[wine, aged cheese\]).
* Lying down in a dark, quiet place can help ease manifestations.
* Check apical pulse before dosage (propranolol).
* Dosage can be taken with food to reduce Gl distress (divalproex) and increase absorption (propranolol).
* Protect skin and eyes from sun (amitriptyline) and avoid driving or operating heavy machinery until medication effects are known (amitriptyline, sumatriptan).