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PathopharmA 2

CHAPTER 32,33,34,36

QuestionAnswer
CHAPTER 32
Antidepressants Primarily used to relieve symptoms of depression  Can HELP anxiety disorders  Not indicated for uncomplicated bereavement
WHAT IS DEPRESSION? depressed mood and loss of pleasure or interest in one’s usual activities and pastimes Symptoms must be present most of the day, nearly every day, for at least 2 weeks  Insomnia (or sometimes hypersomnia)  Anorexia (or sometimes hyperphagia)  Mental slowing and loss of concentration  Feelings of guilt, worthlessness, and helplessness  Thoughts of death and suicide  Overt suicidal behavior
Depression S/S common psychiatric disorder  30% of the U.S. experience THIS  Incidence in women twice as high as that in men  Risk of SUICIDE s high with depression  Often untreated
WHAT IS THE Pathogenesis?? Complex and incomplete  Possible contributing factors  Genetic heritage  Difficult childhood  Chronic low self-esteem Monoamine hypothesis of depression  Depression is caused by the functional insufficiency of monoamine neurotransmitters
WHAT ARE THE 3 Treatment Modalities? 1-Pharmacotherapy 2- Depression-specific psychotherapy (eg, cognitive behavioral therapy and interpersonal psychotherapy) THERE ARE: 3- Electroconvulsive therapy  When drugs and psychotherapy have not worked  When a rapid response is needed  For severely depressed patients  For suicidal patients  For elderly patients at risk of starving
IMPORTANT TO KNOW THAT Symptoms resolve slowly  Initial responses develop after 1 to 3 weeks  Maximal responses may not be seen for 12 weeks  Must take AT LEAST 1 month before determining failure ALL ANTIDEPRESSANT DRUGS APPEAR EQUALY EFFECTIVE
SUICIDAL RISK  Dosing of inpatients should be directly observed DOESES SHOULD BE WRITTEN IN THE SMLLEST AMOUNT MONITOR BY FAMILY(OUTPATIENT)-CONVENIENT W/ PT MANAGEMENT May increase suicidal tendencies during early treatment  Patients should be observed closely for the following:  Suicidality Worsening mood Changes in behavior RISK-greatest in children and young adults.
Selective Serotonin Reuptake Inhibitors-SSRIs MORE SEROTONIN AVAILABLE=CNS EXCITATION ADR-nausea, headache, and central nervous system stimulation. commonly prescribed antidepressants Effective as tricyclic antidepressants (TCAs) but do not cause hypotension, sedation, or anticholinergic effects  Overdose does not cause cardiac toxicity  Death by overdose is extremely rare
Fluoxetine [Prozac, Sarafem] Most widely prescribed SSRI -DRUG OF CHOICE FOR postpartum depression-~80% WOMEN HAVE IT- Thyroid insufficiency has been indicated as a contributing factor in postpartum depression. TE:  Bipolar disorder  Obsessive-compulsive disorder  Panic disorder  Bulimia nervosa  Premenstrual dysphoric disorder  Off-label uses: Post-traumatic stress disorder, social phobia, alcoholism, ADHD disorder, Tourette’s syndrome, & obesity
Mechanism of Action Produce selective inhibition of serotonin reuptake  Produce central nervous system (CNS) excitation
Adverse Effects  Syndrome resolves spontaneously after STOPPING drug  Deaths have occurred  Risk increased by concurrent use of MAOIs and other drugs Serotonin syndrome  Begins 2 to 72 hrs after treatment  Mental (eg, agitation, confusion, disorientation, anxiety, hallucinations, and poor concentration)  Incoordination, myoclonus, hyperreflexia, excessive sweating, tremor, and fever-
Adverse Effects WITHDRAWAL S/S=ELECTRICAL FIRING-HEADACHE TAPER DRUG-DYSPHORIA, TREMOR, ANXIEY, SENSORY DISTURBANCE , DIZZINESS BRUSIXM-CLENCHING, GRINDING TEETH WEIGHT GAIN Withdrawal syndrome Neonatal effects when used during pregnancy  Small risk Teratogenesis  Very low risk  Extrapyramidal side effects  Bruxism  Bleeding disorders SEXUAL DYSFUNCTION
Drug Interactions Monoamine oxidase inhibitors  Risk of serotonin syndrome  Antiplatelet drugs and anticoagulants  Aspirin and nonsteroidal anti-inflammatory drugs  Warfarin  TCAs and lithium Can elevate levels of these drugs
Other SSRIs Citalopram [Celexa]  Escitalopram [Lexapro, Cipralex]  Fluvoxamine [Luvox]  Paroxetine [Paxil, Pexeva]  Sertraline [Zoloft]
Serotonin/Norepinephrine Reuptake Inhibitors-SNRIs Indications  Major depression  Generalized ANXIETY disorder  Social anxiety disorder (social phobia)
Venlafaxine [Effexor]  Duloxetine [Cymbalta] Blocks NE and serotonin uptake  Does not block cholinergic, histaminergic, or alpha1-adrenergic receptors  Serious reactions if combined with MAOIs
Venlafaxine [Effexor] Can causes Serotonin syndrome Side effects  NAUSEA  Headache  Anorexia  Nervousness  Sweating  Somnolence  Insomnia  Weight loss/anorexia  Diastolic hypertension  Sexual dysfunction  Hyponatremia (in older adult patients)  Neonatal withdrawal syndrome
Tricyclic Antidepressants block reuptake of NE and 5-HT and thereby intensify transmission at noradrenergic and serotonergic synapses. Over time, this induces adaptive cellular responses that are ultimately responsible for relieving depression. First choice for many patients with major depression T.USE Depression  Bipolar disorder, ADHD  Fibromyalgia syndrome  Other uses  Neuropathic pain  Chronic insomnia  Panic disorder  Obsessive-compulsive disorder
Adverse Effects- In the early phase of treatment for depression, suicide risk may increase. Patients should be monitored closely for worsening mood, unusual changes in behavior, and suicide risk i.e imipramine [Tofranil] Orthostatic hypotension  Anticholinergic effects(DRY MOUTH, CONSTIPATION)  Diaphoresis  Sedation  Cardiac toxicity  Seizures  Hypomania
Drug Interactions MAOIs( hypertensive crisis )  Direct-acting sympathomimetic drugs(EPINEPHRINE)  Indirect-acting sympathomimetic drugs(AMPHETAMNINE)  Anticholinergic agents  CNS depressants
Toxicity  Primarily from anticholinergic and cardiotoxic actions • Dysrhythmias • Tachycardia • Intraventricular blocks • Complete atrioventricular block • Ventricular tachycardia • Ventricular fibrillation May increase risk of suicide IN early treatment
TREATMENT OF TOXICITY Gastric lavage  Ingestion of activated charcoal  Intravenous sodium bicarbonate to treat cardiac dysrhythmias caused by cardiotoxicity
Monoamine Oxidase Inhibitors MAOIs increase neuronal stores of NE and 5-HT= intensify transmission at noradrenergic and serotonergic synapses. Over time, this induces adaptive cellular responses Drug of choice for atypical depression Second- or third-choice antidepressants for most patients  As effective as TCAs and SSRIs but more hazardous  Risk of triggering hypertensive crisis if patient eats foods rich in tyramine-AVOCADO,CHEESE
Isocarboxazid [Marplan]  Phenelzine [Nardil]  Tranylcypromine [Parnate] T.USE Depression  Other uses • Bulimia nervosa • Agoraphobia-NOT WANTING TO GO OUT • Attention-deficit/hyperactivity disorder • Obsessive-compulsive disorder • Panic attacks
Adverse effects CNS stimulation-LIKE SSRI+SNRI  Orthostatic hypotension- LIKE TCA  Hypertensive crisis from dietary tyramine hypertension crisis S/S: severe headache, tachycardia, hypertension, nausea, vomiting, confusion, and profuse sweating—911
MOAI-Hypertensive crisis/dietary tyramine Tyramine: Promotes the release of NE from sympathetic neurons Hypertensive crisis • Severe headache • Tachycardia • Hypertension • Nausea and vomiting • Confusion • Profuse sweating • Stroke • Death
PREVENTION-MOAI-Hypertensive crisis/dietary tyramine TEACH PATIENT ABOUT TYRAMINE-RICH FOODS TEACH ABOUT S/S OF CRISIS IV vasodilator • Sodium nitroprusside (a nitric oxide donor) • Phentolamine (an alpha-adrenergic antagonist) • Labetalol (an alpha-adrenergic and beta-adrenergic antagonist)
FACTS MAOIs must not be combined with SSRIs, SNRIs, or other serotonergic drugs because serotonin syndrome could result MAOIs must not be combined with indirect-acting sympathomimetics (e.g., amphetamine, cocaine) because hypertensive crisis can result
FACTS
IMPORTANT ECT as practiced today is safer and less traumatic .-adjunctive use of (1) a short-acting IV anesthetic (e.g., propofol, etomidate) to produce unconsciousness and (2) a short-acting muscle relaxant (succinylcholine) to prevent convulsions
IMPORTANT SSRIs have two major advantages over TCAs: they cause fewer side effects and are safer when taken in overdose. Sexual dysfunction (e.g., impotence, anorgasmia) is more common with SSRIs than with most other antidepressants NEVER COMBINED WITH MOAIs
Atypical Antidepressants-Bupropion [Wellbutrin] SMOKING CESSATION FOR SLEEPING ALOT+WEIGH GAIN PATIENT Acts as stimulant and suppresses appetite • Antidepressant effects begin in 1 to 3 weeks • Does not affect serotonergic, cholinergic, or histaminergic transmission • Does not cause weight gain
Adverse effects Seizures • Agitation • Tremor • Tachycardia • Blurred vision • Dizziness • Headache • Insomnia • Dry mouth • Gastrointestinal upset • Constipation • Weight loss
Drug interactions MAOIs can increase the risk of bupropion toxicity
Preparations, dosage, and administration KEEP DRUG IN TACT CANT BE OPENED, CRUSHED IR, SR,ER tablets Light Therapy  Exposure to bright light  Effective treatment for seasonal affective disorder and nonseasonal major depression  May enhance serotonergic neurotransmission  The more intense the light, the greater the response
A patient is prescribed isocarboxazid [Marplan] for the treatment of depression. Which foods should the patient be taught to avoid? Bananas, smoked fish, and cheese TYRAMINE release of accumulated norepinephrine to cause massive vasoconstriction and the excessive stimulation of the heart. A hypertensive crisis may occur. Foods to avoid include yeast extracts,
CHAPTER 33
Bipolar Disorder known as manic-depressive illness Mainstays of therapy are lithium and valproic acid lifelong treatment-antipsychotic  Cause may be disruption of neuronal growth and survival
Bipolar Disorder Cyclic disorder  Recurrent fluctuations in mood  Episodes of mania=LESS IMPULSE CONTROL-LITTLE SLEEP depression=DEPRESSED MOOD, LOST OF INTEREST persist for months without treatment HIGHLY INDIVIDUALIZED
Characteristics of Bipolar Disorder Types of mood episodes seen with BPD  Pure manic episode (euphoric mania)-MORE ENERGY-HAPPY  Hypomanic episode (hypomania) TALKING MORE-LESS ENERGY  Major depressive episode (depression)  Mixed episode Characteristics of Bipolar Disorder
Drug Therapy-Mood stabilizers Lithium, divalproex sodium, and carbamazepine • Relieve symptoms during manic and depressive episodes • Prevent recurrence of manic and depressive episodes • Do not worsen symptoms of mania or depression; do not accelerate the rate of cycling
Drug Therapy Antipsychotics • Given during severe manic episodes  Antidepressants • Given during depressive episodes Promoting adherence  Short-term hospitalization  Long-term prophylactic therapy  Education for both patient and family
Lithium [Lithonate, Lithotabs] Chemistry  Simple inorganic ion  Found naturally in animal tissues NARROW THERAPEUTIC INDEX Therapeutic uses  BPD Other uses • Alcoholism • Bulimia • Schizophrenia • Glucocorticoid-induced psychosis
Lithium [Lithonate, Lithotabs] Pharmacokinetics  Absorption and distribution  Excretion • Short half-life • Excreted by the kidneys • Sodium levels: Lithium excretion reduced when sodium level low  Plasma levels • 0.8 to 1.4 mEq/L
Adverse effects TOXICITY= diarrhea, anorexia, muscle weakness, nausea, vomiting, tremors, slurred speech, and drowsiness. Later signs include blurred vision, seizures, trembling, confusion, and ataxia. > 1.5 mEq/L • Monitor levels Q2-3D at initiation of therapy and then Q3-6MNTHS • Levels >2.5mEq/L = death  Therapeutic lithium levels • GI effects • Tremors • Polyuria • Renal toxicity • Goiter and hypothyroidism • Teratogenesis
Drug interactions Aspirin is safe to use as an analgesic with lithium. DECREASE LITHIUM EXCRETION WITH Diuretics(THIAZIDES)  Nonsteroidal anti-inflammatory drugs  Anticholinergic drugs
Preparations, dosage, and administration  Lithium carbonate  Lithium citrate  Dosage is highly individualized
Divalproex sodium [Valproate]  Carbamazepine Reduces symptoms  Protects against recurrence of mania and depression  Target trough plasma level: 4 to 12 mcg/mL
Lamotrigine Indicated for long-term maintenance  Can be used alone or in Combination with other drugs To minimize the risk of serious rash, dosage should be low initially (25 to 50 mg/day) and then gradually increased.
Antipsychotic Drugs APPROVED: Olanzapine [Zyprexa], quetiapine [Seroquel], risperidone [Risperdal], aripiprazole [Abilify], and ziprasidone [Geodon Used to acutely control SYMPTOMS during manic episodes  CAN BE USED FOR long term to help stabilize mood  Benefit patients with or without psychotic SYMPTOMS  Can be combined with mood stabilizer
Nondrug Therapy Education  EDUCATE Patient and family  Psychotherapy  Individual, group, and family  Electroconvulsive therapy  Last resort
IMPORTANT PT W/ bipolar depression, using an antidepressant alone may induce mania— To minimize risk of mania, antidepressants should not be routinely used alone; rather, they should be combined with a mood stabilizing drug.
IMPORTANT To minimize the risk of toxicity, lithium levels must be monitored. The trough level, measured 12 hours after the evening dose, should be less than 1.5 mEq/L
IMPORTANT avoid LITHIUM during the first trimester of pregnancy. Unless the benefits outweigh the risks, lithium should be avoided during the second and third trimesters too. ■ A reduction in sodium levels will reduce lithium excretion
A 24-year-old woman has been diagnosed with BPD. The patient has an order to receive lithium. Before administering the medication, it is most appropriate for the nurse to assess what? baseline patient’s cardiac status, serum electrolyte levels, renal function, hematologic status, and thyroid function. assess FOR pregnanCY or plans to become pregnant, because lithium should be avoided during the first trimester of pregnancy.
When providing patient teaching regarding lithium therapy, what are some of the specifics the nurse should include related to this medication Take the medication W/ MEAL OR MILK as prescribed, even when you are feeling well. Encourage family members to oversee lithium administration. NEVER CRUSH SUSTAINED TABLETS
The patient tells the nurse that she is afraid to take lithium because she has heard that she must have blood work done every day she takes the medication, and she doesn’t like needles. What is the most therapeutic response by the nurse? LITHIUM LEVEL monitored to ensure the therapeutic range (0.8 to 1.4 mEq/L for initial therapy and 0.4 to 1 mEq/L for maintenance). Levels should be measured every 2 to 3 days during initial therapy and only every 3 to 6 months during maintenance.
A patient who is diagnosed with BPD is prescribed lithium. To monitor for lithium toxicity, the nurse should observe the patient for which signs and symptoms? Polydipsia, slurred speech, and fine hand tremors nausea, vomiting, persistent gastrointestinal upset, diarrhea, clonic movements, hyperirritability of muscles, muscle weakness, and hypotension.
CHAPTER 34
Sedative-Hypnotic Drugs Drugs that depress central nervous system (CNS) function Primarily used to treat anxiety and insomnia Antianxiety (LOWER DOSE)agents or anxiolytics OR TRANQUILIZERS HYPNOTICS(HIGHEST DOSE)
Benzodiazepines Drugs of choice to treat insomnia and anxiety  Used to induce general anesthesia  Used to manage seizure disorders, muscle spasms, panic disorder, and withdrawal from alcohol
BENZODIAZEPINES Diazepam [Valium], Lorazepam [Ativan] and alprazolam [Xanax ARE much safer - have a low abuse potential, cause less tolerance and dependence, and don’t induce drug-metabolizing enzymes.
pharmacologic effects CNS=Reduce anxiety and promote sleep CVS=Oral – almost no effect • Intravenous – profound hypotension and cardiac arrest RESPIRATORY=Weak respiratory depressants unless combined with other respiratory depressants(OPIOID, ALCOHOL)
Benzodiazepines NOT USED IN PREGNANCY Therapeutic uses  Anxiety  Insomnia  Seizure disorders  Muscle spasm  Alcohol withdrawal  Perioperative applications
Adverse effects CNS depression-DAYTIME SEDATION  Anterograde amnesia-DIFFICULTY MAKING MEMORIES  Sleep driving  Paradoxical effects  Respiratory depression  Abuse NOT Use in pregnancy and lactation
Drug interactions CNS depressants NOT TAKEN WITH ALCOHOL
IMPORTANT (except in patients who have undergone prolonged high-dose therapy). ■ To minimize withdrawal symptoms, benzodiazepines should be discontinued gradually, over several weeks or even months Tolerance and physical dependence  Tolerance • With prolonged use, tolerance develops to some effects but not others  Physical dependence • Can cause physical dependence, but the incidence of substantial dependence is low
Acute toxicity Oral overdose: Drowsiness, lethargy, and confusion  Intravenous toxicity: Life-threatening reactions, profound hypotension, respiratory arrest, and cardiac arrest
General treatment measures Oral: Gastric lavage, activated charcoal, saline cathartic, and dialysis IV= flumazenil [Romazicon] ANTIDOTE Reverses the sedative effects of benzodiazepines but may not reverse respiratory depression(WATCH O2)
Zolpidem [Ambien] benzodiazepine-like drugs Sedative-hypnotic FOR hypnotic  Short-term management of insomnia  Long-term use: No apparent tolerance or increase in adverse effects  Side effects: Daytime drowsiness and dizziness  Pt teaching LET FMILY KNOW THAT THEY ON THIS, TO MONITOR PT
Barbiturates Cause tolerance and dependence  High abuse potential  Multiple drug interactions  Powerful respiratory depressants that can be fatal with overdose  No specific antidote  Replaced by benzodiazepines and the benzodiazepine-like drugs
Three classifications Ultrashort-acting (thiopental)  Short- to intermediate-acting (secobarbital)  Long-acting (phenobarbital) Mechanism of action  Binds to the GABA receptor–chloride channel complex
Pharmacologic effects CNS depression  Cv  Induction of hepatic drug-metabolizing enzymes  Tolerance and physical dependence • Develops to many—but not all—of the CNS effects • Very little tolerance develops to respiratory depression  Physical dependence
Adverse effects Respiratory depression  Suicide  Abuse respiratory depression, risk of suicide, risk of abuse, and hangover (sedation, impaired judgment, and reduced motor skills)
Management of Insomnia Basic management principles  Cause-specific therapy  Nondrug therapy  Sleep Hygiene Table 34.5, p.394
Antidepressants Trazodone [Oleptro] • Atypical antidepressant with strong sedative actions • Can decrease sleep latency and prolong sleep duration • Does not cause tolerance or physical dependence
Doxepin Old tricyclic antidepressant with strong sedative actions • Used to treat patients who have trouble staying asleep
Antihistamines Diphenhydramine  Can be purchased without a prescription  Less effective than others  Tolerance develops quickly (in 1 to 2 weeks)  Adverse effects: Daytime drowsiness and anticholinergic effects
Drugs used for treatment Melatonin appears to be moderately effective  Valerian root, chamomile, passionflower, lemon balm, and lavender have very mild sedative effects; proof of benefits for insomnia is lacking
IMPORTANT Benzodiazepines , the benzodiazepine-like drugs— zaleplon [Sonata], eszopiclone [Lunesta], and zolpidem [Ambien, others] produce their effects by enhancing the actions of GABA, the principal inhibitory neurotransmitter in the CNS.
IMPORTANT ■ Benzodiazepines and the benzodiazepine-like drugs (zolpidem, zaleplon, eszopiclone) are drugs of choice for insomnia. ■ When benzodiazepines are used for transient insomnia, treatment should last only 2 to 3 weeks.
IMPORTANT Cognitive behavioral therapy is highly effective for insomnia, and hence is considered first-line treatment, even if drugs are also employed Exercise daily, but not later than 7:00 PM. Regular exercise helps deepen sleep.
IMPORTANT When insomnia has a treatable cause (e.g., pain, depression, schizophrenia), primary therapy should be directed at the underlying illness; hypnotics should be used only as adjuncts
Sleep Phases Stage I: 5% • Stage II: 50% to 60% • Stages III and IV: 10% to 20% • REM: 20% to 25
36
Central Nervous System Stimulants Increase the activity of central nervous system (CNS) neurons  Enhance neuronal excitation; a few suppress neuronal inhibition  In sufficient doses, all can cause convulsions  Limited clinical applications
Amphetamines Mechanism of action  Release norepinephrine  Release dopamine
Pharmacologic effects ABUSE  High potential for abuse due to euphoria Physical dependence  Abstinence syndrome with abrupt withdrawal CNS: prominent effects on mood and arousal  CVS: Increased HR, AV conduction, and force of contraction  Tolerance  W/ regular use, tolerance develops to elevation of mood, suppression of appetite, and stimulation of the heart and blood vessels
Adverse effects  CNS stimulation  Weight loss INSOMNIA  Cardiovascular effects((dysrhythmias, angina, hypertension)  Psychosis-LOSE CNTACT W/ REALITY
Acute toxicity Dizziness, confusion, hallucinations, paranoid delusions, palpitations, dysrhythmias, and hypertension  Death is rare Fatal overdose: Convulsions, coma, and cerebral hemorrhage
Treatment Hallucinations: Chlorpromazine • Hypertension: Alpha-adrenergic blocker (eg, phentolamine); chlorpromazine helps lower blood pressure • Seizures: Diazepam
TYPES OF AMPHETAMINES Dextroamphetamine sulfate  Immediate release  Extended release Amphetamine/dextroamphetamine mixture  Immediate release  Extended release  Lisdexamfetamine [Vyvanse]  Methamphetamine [Desoxyn]
Methylphenidate-Pharmacology nearly identical to that of amphetamines T.USE ADHD and narcolepsy  Trade names  Ritalin, Metadate, Methylin, Concerta, and Daytrana
 Preparations, dosage, and administration  Immediate release • Ritalin and Methylin  Sustained release • Ritalin SR, Metadate ER, and Quillivant XR  Once-daily dosing • Concerta, Metadate CD, Ritalin LA, Daytrana, and Biphentin (Canadian)
Methylxanthines Derivatives of xanthine  Caffeine • Few clinical applications • Widespread ingestion for nonmedical purposes Dietary sources • Chocolate • Soft drinks
Mechanism of action  Reversible blockade of adenosine receptors  Calcium permeability  Accumulation of cyclic adenosine monophosphate
DOSES Low doses  Decrease drowsiness and fatigue  Increase capacity for prolonged intellectual exertion  Increasing doses  Nervousness, insomnia, and tremors  Seizures with very large amounts
Modafinil [Provigil, Alertec] (Miscellaneous CNS Stimulants) T.use • Promotes wakefulness • Narcolepsy • Shift-work sleep disorder • Obstructive sleep apnea/hypopnea syndrome MOA  Pharmacokinetics • Rapidly absorbed in the gastrointestinal tract • Elimination by hepatic metabolism • Half-L: About 15 hours
Adverse effects Headache • Nausea • Nervousness • Diarrhea • Rhinitis  Drug interactions • Oral contraceptives • Cyclosporine
ADHD in Children Signs and symptoms  Inattention  Hyperactivity  Impulsivity  Fidgety  Unable to concentrate
ADHD in Children Unable to wait his or her turn  Switches excessively from one activity to another  Calls out excessively in class  Present before the age of 7 years  Present for at least 6 months
Stimulants Adverse effects:  Gastrointestinal reactions  Reduced appetite  Dizziness  Somnolence  Mood swings  Trouble sleeping
Non-stimulants- (Atomoxetine/Strattera) Norepinephrine uptake inhibitor  Alpha2 Adrenergic agonist ■ In treatment of ADHD, the nonstimulants may be used alone or as add-on therapy with a stimulant less effective in ADHD, but also are safer and have a lower potential for abuse
ADHD in Adults 60% of ADHD cases persist into adulthood  Symptoms • Poor concentration • Stress intolerance • Antisocial behavior • Outbursts of anger • Inability to maintain a routine  Drug therapy • Methylphenidate
IMPORTANT Caffeine has two principal uses: treatment of apnea in premature infants and reversal of drowsiness LOW DOSE-decrease drowsiness and fatigue HIGH DOSE-nervousness, insomnia, and tremors HUGE DOSE- cause convulsions.
A nurse instructs a parent about the administration schedule for Adderall XR (amphetamine/dextroamphetamine mixture) to treat the child’s ADHD. The nurse determines that teaching is successful if the parent makes which statement? “The drug should be given in the morning, before school.” Adderall XR is a long-acting drug that should be administered once in the morning, after breakfast.
A child takes Adderall XR (amphetamine/dextroamphetamine mixture) for ADHD. The nurse should assess the child for which adverse effects? Weight loss, restlessness, and chest pain
A child with ADHD has been prescribed Daytrana (a transdermal methylphenidate patch). When teaching the child’s caregiver how to administer the medication, which instruction should the nurse include in the teaching? Remove the patch within 9 hours of application. patch within 9 hours of application. blood level peak within about 9 hours, after which time the patch should be removed. PT should apply the patch to the hip in the morning and alternate hips QD.
The nurse teaches a 16-year-old female patient about methylphenidate (Ritalin). Which statement by the patient indicates that more teaching is needed? “Decaffeinated coffee has a small amount of caffeine.” Caffeine is also present in many noncola soft drinks (eg, orange soda, Mountain Dew, Jolt Energy Drink). Eight ounces of decaffeinated coffee or tea may contain 1 to 5 mg of caffeine.
Created by: Seka_nurse
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