Mosby's 2014 Nursing Drug Reference (43 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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INTEG:
Rash

META:
Hyperglycemia, dyslipidemia

RESP:
Cough

SYST:
Death among geriatric patients with dementia

PHARMACOKINETICS

PO:
Absorption 87%; extensively metabolized by liver to a major active metabolite; plasma protein binding >99%; terminal half-life 75-146 hr; excretion via urine 25%, feces 55%; clearance decreased in geriatric patients

INTERACTIONS

Increase:
effects of ARIPiprazole—CYP3A4 inhibitors (ketoconazole, erythromycin), CYP2D6 inhibitors (quiNIDine, FLUoxetine, PARoxetine); reduce dose of ARIPiprazole

Increase:
sedation—other CNS depressants, alcohol

Increase:
EPS—other antipsychotics, lithium

Decrease:
ARIPiprazole level—famotidine, valproate

Decrease:
effects of ARIPiprazole—CYP3A4 inducers (carBAMazepine)

Drug/Herb

Decrease:
ARIPiprazole effect—St. John’s wort

NURSING CONSIDERATIONS
Assess:

 

Black Box Warning:

Mental status
before initial administration, children/young adults may exhibit suicidal thoughts/behaviors, therefore smallest amount of product should be given; elderly patients with dementia-related psychosis are at increased risk of death

• 
Swallowing of PO medication; check for hoarding, giving of medication to other patients

• 
I&O ratio; palpate bladder if urinary output is low

• 
Bilirubin, CBC, LFTs, weight, lipid profile, fasting blood glucose q mo

• 
Affect, orientation, LOC, reflexes, gait, coordination, sleep pattern disturbances

• 
B/P standing and lying; also pulse, respirations; take q4hr during initial treatment; establish baseline before starting treatment; report drops of 30 mm Hg; watch for ECG changes

• 
Dizziness, faintness, palpitations, tachycardia on rising

• 
EPS,
including akathisia (inability to sit still, no pattern to movements), tardive dyskinesia (bizarre movements of the jaw, mouth, tongue, extremities), pseudoparkinsonism (rigidity, tremors, pill rolling, shuffling gait)

 
Neuroleptic malignant syndrome:
hyperthermia, increased CPK, altered mental status, muscle rigidity; notify prescriber immediately

• 
Constipation, urinary retention daily; if these occur, increase bulk, water in diet; stool softeners, laxatives may be needed

Perform/provide:

• 
Supervised ambulation until patient is stabilized on medication; do not involve patient in strenuous exercise program because fainting is possible; patient should not stand still for a long time

• 
Storage in tight, light-resistant container

Evaluate:

• 
Therapeutic response: decrease in emotional excitement, hallucinations, delusions, paranoia; reorganization of patterns of thought, speech

Teach patient/family:

• 
That orthostatic hypotension may occur; to rise from sitting or lying position gradually

• 
To avoid hot tubs, hot showers, tub baths; hypotension may occur


 
To avoid abrupt withdrawal of this product; EPS may result; product should be withdrawn slowly

• 
To avoid OTC preparations (cough, hay fever, cold) unless approved by prescriber because serious product interactions may occur; to avoid use with alcohol, CNS depressants because increased drowsiness may occur

• 
To avoid hazardous activities if drowsy, dizzy

• 
About compliance with product regimen

• 
To report impaired vision, tremors, muscle twitching, urinary retention


 
That heat stroke may occur in hot weather; to take extra precautions to stay cool

• 
To notify prescriber if pregnant or intending to become pregnant; not to breastfeed

 

Black Box Warning:

To report suicidal thoughts/behaviors immediately

TREATMENT OF OVERDOSE:

Lavage if orally ingested; provide airway;
do not induce vomiting

Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

RARELY USED
armodafinil (Rx)

(ar-moe-daf′in-il)

Nuvigil

 

Controlled Substance Schedule IV
USES:

Narcolepsy, obstructive sleep apnea/hypoapnea syndrome, circadian rhythm disruption (shift-work sleep problems)

CONTRAINDICATIONS:

Hypersensitivity to this product or modafinil

DOSAGE AND ROUTES
Calculator
Narcolepsy, obstructive sleep apnea/hypoapnea syndrome

• Adult and adolescent

17 yr: PO
150-250 mg in
AM

Circadian rhythm disruption (shift work sleep problems)

• Adult and adolescent

17 yr: PO
150 mg at start of shift

Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

ascorbic acid (vit C) (
OTC,
Rx)

(a-skor′bic)

Acerola C, Apo-C
, Ascor L-500, Cenolate, Equaline Vitamin C, Walgreens Gold Seal, and many more

Func. class.:
Vit C—water-soluble vitamin

ACTION:

Wound healing, collagen synthesis, antioxidant, carbohydrate metabolism

USES:

Vit C deficiency, scurvy; delayed wound, bone healing; chronic disease; urine acidification; before gastrectomy; dietary supplement

Unlabeled uses:

Common cold prevention

CONTRAINDICATIONS:

Tartrazine, sulfite sensitivity; G6PD deficiency

Precautions:
Pregnancy (C), gout, diabetes, renal calculi (large doses)

DOSAGE AND ROUTES
Calculator
Dietary supplementation

• Adult:
50-500 mg/day

• Child 14-18 yr: PO
65 mg (female), 75 mg (male)

• Child 9-13 yr: PO
45 mg/day

• Child 4-8 yr: PO
25 mg/day

• Child 1-3 yr: PO
15 mg/day

• Infant: PO
40-50 mg/day

Scurvy

• Adult: PO/SUBCUT/IM/IV
100-250 mg/day × 2 wk then 50 mg or more daily

• Child: PO/SUBCUT/IM/IV
100-300 mg/day × 2 wk then 35 mg or more daily

Wound healing/chronic disease/fracture (may be given with zinc)

• Adult: SUBCUT/IM/IV/PO
200-500 mg/day for 1-2 mo

• Child: SUBCUT/IM/IV/PO
100-200 mg added doses for 1-2 mo

Urine acidification

• Adult:
4-12 g/day in divided doses

• Child:
500 mg q6-8hr

Available forms:

Tabs 25, 50, 100, 250, 500, 1000, 1500 mg; effervescent tabs 1000 mg; chewable tabs 100, 250, 500 mg; timed-release tabs 500, 750, 1000, 1500 mg; timed-release caps 500 mg; crys 4 g/tsp; powder 4 g/tsp; liq 35 mg/0.6 ml; sol 100 mg/ml; syr 20 mg/ml, 500 mg/5 ml; inj SUBCUT, IM, IV 100, 250, 500 mg/ml

Administer:
PO route

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