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48 Cards in this Set
- Front
- Back
Inhibit synaptic activity of primary afferents and spinal cord pain transmission neurons
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Ascending pathways
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Activation of these receptors close Ca2+ ion channels to inhibit neurotransmitter release *
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Presynaptic mu, delta, and kappa receptors
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Activation of these receptors open K+ ion channels to cause membrane hyperpolarization
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Postsynaptic Mu receptors
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Tolerance to all effects of opioid agonists can develop except*
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Miosis and constipation
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All opioids except this agent (which has a muscarinic blocking action) cause pupillary constriction
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Meperidine
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SE of these drugs include dependence, withdrawal syndrome, sedation, euphoria, respiratory depression nausea and vomiting, constipation, biliary spasm, increased ureteral and bladder tone, and reduction in uterine tone
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Opioid Analgesics
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Strong opioid agonists
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Morphine, methadone, meperidine, and fentanyl
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Opioids used in anesthesia
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Morphine and fentanyl
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Opioid used in the management of withdrawal states*
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Methadone
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Opioid available trans-dermally *
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Fentanyl
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Opioid that can be given PO, by epidural, and IV, which helps to relieve the dyspnea of pulmonary edema*
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Morphine
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Use of this opioid with MAOI can lead to hyperpyrexic coma, and with SSRI's can lead to serotonin syndrome
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Meperidine
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Moderate opioid agonists*
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Codeine, hydrocodone, and oxycodone
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Weak opioid agonist, poor analgesic, its overdose can cause severe toxicity including respiratory depression, circulatory collapse, pulmonary edema, and seizures
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Propoxyphene
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Partial opioid agonist, considered a strong analgesic, has a long duration of action and is resistant to naloxone reversal
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Buprenorphine
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Opioid antagonist that is given IV and had short DOA*
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Naloxone
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Opioid antagonist that is given orally in alcohol dependency programs *
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Naltrexone
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These agents are used as antitussive
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Dextromethorphan, Codeine
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These agents are used as antidiarrheal
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Diphenoxylate, Loperamide
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Inhalant anesthetics
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NO, chloroform, and diethyl ether
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Toxic to the liver, kidney, lungs, bone marrow, peripheral nerves, and cause brain damage in animals, sudden death has occurred following inhalation
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Fluorocarbons and Industrial solvents
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Cause dizziness, tachycardia, hypotension, and flushing
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Organic nitrites
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Causes acne, premature closure of epiphyses, masculinization in females, hepatic dysfunction, MI, and increases in libido and aggression
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Steroids
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Readily detected markers that may assist in diagnosis of the cause of a drug overdose include*
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Changes in heart rate, blood pressure, respiration, body temperature, sweating, bowel signs, and pupillary responses
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Most commonly abused in health care professionals
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Heroin, morphine, oxycodone, meperidine and fentanyl
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This route is associated with rapid tolerance and psychologic dependence
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IV administration
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Leads to respiratory depression progressing to comaand death*
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Overdose of opioids
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Lacrimation, rhinorrhea, yawning, sweating, weakness, gooseflesh, nausea, and vomiting, tremor, muscle jerks, and hyperpnea are signs of this syndrome
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Abstinence syndrome
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Treatment for opioid addiction
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Methadone, followed by slow dose reduction
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This agent may cause more severe, rapid and intense symptoms to a recovering addict*
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Naloxone
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Sedative-Hypnotics action
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Reduce inhibition, suppress anxiety, and produce relaxation
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Additive effects when Sedative-Hypnotics used in combination with these agents
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CNS depressants
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Common mechanism by which overdose result in death
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Depression of medullary and cardiovascular centers
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"Date rape drug" *
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Flunitrazepam (rohypnol)
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The most important sign of withdrawal syndrome
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Excessive CNS stimulation (seizures)
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Treatment of withdrawal syndrome involves
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Long-acting sedative-hypnotic or a gradual reduction of dose, clonidine or propranolol
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These agents are CNS depressants *
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Ethanol, Barbiturates, and Benzodiazepines
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Withdrawal from this drug causes lethargy, irritability, and headache
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Caffeine
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W/D from this drug causes anxiety and mental discomfort
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Nicotine
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Treatments available for nicotine addiction*
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Patches, gum, nasal spray, psychotherapy, and bupropion
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Chronic high dose abuse of nicotine leads to
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Psychotic state, overdose causes agitation, restlessness, tachycardia, hyperthermia, hyperreflexia, and seizures
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Tolerance is marked and abstinence syndrome occurs
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Amphetamines
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Amphetamine agents
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Dextroamphetamines and methamphetamine
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These agents are congeners of Amphetamine
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DOM, STP, MDA, and MDMA "ecstasy"
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Overdoses of this agent with powerful vasoconstrictive action may result in fatalities from arrhythmias, seizures, respiratory depression, or severe HTN (MI and stroke)
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Cocaine "super-speed"
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Most dangerous of the currently popular hallucinogenic drugs, OD leads to nystagmus, marked hypertension, and seizures, presence of both horizontal and vertical nystagmus is pathognomonic
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PCP
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Removal of PCP may be aided
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Urinary acidification and activated charcoal or continual nasogastric suction
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THC is active ingredient, SE's include impairment of
judgment, and reflexes, decreases in blood pressure and psychomotor performance occur * |
Marijuana
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