Mosby's 2014 Nursing Drug Reference (409 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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triamcinolone (topical-oral) (
OTC
)

(trye-am-sin′oh-lone)

Kenalog in Orabase, Oralone Dental

Func. class.:
Topical anesthetic

Chem. class.:
Synthetic fluorinated adrenal corticosteroid

ACTION:

Binds with steroid receptors, decreases inflammation

USES:

Oral pain

CONTRAINDICATIONS:

Infants <1 yr, hypersensitivity, application to large areas; presence of fungal, viral, or bacterial infections of mouth or throat

Precautions:
Pregnancy (C), children <6 yr, sepsis, denuded skin

DOSAGE AND ROUTES
Calculator

• Adult and child:
TOP
Press 1/4 inch into affected area until film appears, repeat bid-tid

Available forms:
Paste 0.1%

Administer:

• 
After cleansing oral cavity after meals

SIDE EFFECTS

INTEG:
Rash, irritation, sensitization

NURSING CONSIDERATIONS
Assess:

• 
Allergy: rash, irritation, reddening, swelling

• 
Infection: if affected area is infected, do not apply

Evaluate:

• 
Therapeutic response: absence of pain in affected area

Teach patient/family:

• 
To report rash, irritation, redness, swelling

• 
How to apply paste

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

triazolam (Rx)

(trye-ay′zoe-lam)

Apo-Triazo
, Halcion

Func. class.:
Sedative-hypnotic, antianxiety

Chem. class.:
Benzodiazepine, short acting

 

Controlled Substance Schedule IV (USA), Targeted (CDSA IV) (Canada)

Do not confuse:
Halcion
/Haldol/halcinonide

ACTION:

Produces CNS depression at limbic, thalamic, hypothalamic levels of CNS; may be mediated by neurotransmitter γ-aminobutyric acid (GABA); results are sedation, hypnosis, skeletal muscle relaxation, anticonvulsant activity, anxiolytic action

USES:

Insomnia, sedative/hypnotic

CONTRAINDICATIONS:

Pregnancy (X), breastfeeding, hypersensitivity to benzodiazepines, intermittent porphyria

Precautions:
Children <15 yr, geriatric patients, anemia, renal/hepatic disease, suicidal individuals, drug abuse, psychosis, acute closed-angle glaucoma, seizure disorders, angioedema, respiratory disease, depression, sleep-related behaviors (sleep walking)

DOSAGE AND ROUTES
Calculator

• Adult:
PO
0.125-0.5 mg at bedtime, max 0.5 mg/day

• Geriatric:
PO
0.0625-0.125 mg at bedtime, max 0.25 mg/day

Available forms:
Tabs 0.125, 0.25 mg

Administer:

• 
After trying conservative measures for insomnia

• 
1/2 hr before bedtime for sleeplessness

• 
On empty stomach for fast onset; may be taken with food if GI symptoms occur

• 
Avoid use with CNS depressants; serious CNS depression may result

SIDE EFFECTS

CNS:
Headache, lethargy, drowsiness, daytime sedation
, dizziness, confusion, lightheadedness, anxiety, irritability, amnesia, poor coordination,
complex sleep-related reactions: sleep driving, sleep eating

CV:
Chest pain, pulse changes

GI:
Nausea, vomiting, diarrhea, heartburn, abdominal pain, constipation,
hepatic injury

SYST:
Severe allergic reactions

PHARMACOKINETICS

Onset 30-45 min, duration 6-8 hr, metabolized by liver, excreted by kidneys (inactive metabolites), crosses placenta, excreted in breast milk, half-life 2-3 hr

INTERACTIONS

• 
Smoking may decrease hypnotic effect

Increase:
triazolam levels—CYP3A4 inhibitors, protease inhibitors

 
Increase:
effects of cimetidine, disulfiram, erythromycin, clarithromycin, probenecid, isoniazid, oral contraceptives; do not use concurrently

Increase:
action of both products—alcohol, CNS depressants

Decrease:
effect of antacids, theophylline, rifampin, smoking

Drug/Herb

Increase:
CNS depression—chamomile, hops, kava, lavender, valerian

Drug/Food

• 
Grapefruit may increase action, avoid concurrent use

Drug/Lab Test

Increase:
ALT, AST, serum bilirubin

Decrease:
RAI uptake

False increase:
urinary 17-OHCS

NURSING CONSIDERATIONS
Assess:

• 
Blood studies: Hct, Hgb, RBC if blood dyscrasias suspected (rare)

• 
Hepatic studies: AST, ALT, bilirubin if hepatic damage has occurred

• 
Mental status: mood, sensorium, affect, memory (long, short term), insomnia, withdrawal symptoms, excessive sedation, impaired coordination

• 
Blood dyscrasias: fever, sore throat, bruising, rash, jaundice, epistaxis (rare)

• 
Type of sleep problem: falling asleep, staying asleep

Perform/provide:

• 
Assistance with ambulation after receiving dose

• 
Cool storage in tight container

Evaluate:

• 
Therapeutic response: ability to sleep at night, decreased amount of early morning awakening if taking product for insomnia

Teach patient/family:

• 
To use reliable contraception; pregnancy category (X)

• 
That dependence is possible after long-term use

• 
To avoid driving, other activities requiring alertness until product is stabilized

• 
To avoid alcohol ingestion

• 
That effects may take 2 nights for benefits to be noticed; that product is for short-term use only; to use for 7-10 continuous nights

• 
About alternative measures to improve sleep: reading, exercise several hours before bedtime, warm bath, warm milk, TV, self-hypnosis, deep breathing

• 
That complex sleep-related behaviors (sleep eating/driving) may occur

• 
That hangover common in geriatric patients but less common than with barbiturates; that rebound insomnia may occur for 1-2 nights after discontinuing product; to discontinue by decreasing dose by 50% q2 nights until 0.125 mg for 2 nights, then stop

TREATMENT OF OVERDOSE:

Lavage, activated charcoal; monitor electrolytes, VS

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

trifluridine ophthalmic

 

trimethobenzamide (Rx)

(trye-meth-oh-ben′za-mide)

Tigan

Func. class.:
Antiemetic, anticholinergic

Chem. class.:
Ethanolamine derivative

ACTION:

Acts centrally by blocking chemoreceptor trigger zone, which in turn acts on vomiting center

USES:

Nausea, vomiting

CONTRAINDICATIONS:

Children (parenterally), hypersensitivity to opioids, shock

Precautions:
Pregnancy (C), children, geriatric patients, cardiac dysrhythmias, acute febrile illness, encephalitis, gastroenteritis, dehydration, electrolyte imbalances, Reye’s syndrome

DOSAGE AND ROUTES
Calculator
Nausea/vomiting

• Adult:
IM
200 mg 3-4×/day;
PO
300 mg 3-4×/day

Postoperative

• Adult:
IM
200 mg followed by 2nd dose 1 hr later

Renal dose

• Adult:
IM
CCr 15-30 ml/min, give 50% of dose

Available forms:
Caps 300 mg; inj 100 mg/ml

Administer:
PO route

• 
Capsules may be swallowed whole, chewed, allowed to dissolve

IM route

• 
Inj in large muscle mass; aspirate to avoid IV administration; inj not to be used in children or infants

Syringe compatibilities:
Butorphanol, glycopyrrolate, HYDROmorphone, midazolam, nalbuphine

SIDE EFFECTS

CNS:
Drowsiness
, headache, dizziness, confusion, disorientation,
coma, seizures,
depression,
vertigo
, EPS

CV:
Hypo/hypertension, palpitation,
cardiac dysrhythmias

EENT:
Dry mouth, blurred vision, photosensitivity

GI:
Nausea, diarrhea, vomiting, difficulty swallowing

INTEG:
Rash, urticaria, fever, chills, flushing, hyperpyrexia

PHARMACOKINETICS

Metabolized by liver, excreted by kidneys

PO:
Onset 20-40 min, duration 3-4 hr

IM:
Onset 15-35 min, duration 2-3 hr

INTERACTIONS

Increase:
effect—CNS depressants, alcohol

NURSING CONSIDERATIONS
Assess:

• 
Nausea, vomiting before, after treatment

• 
VS, B/P; check patients with cardiac disease more often

• 
Signs of toxicity of other products or masking of symptoms of disease: brain tumor, intestinal obstruction

• 
Observe for drowsiness, dizziness

Evaluate:

• 
Therapeutic response: decreased nausea, vomiting

Teach patient/family:

• 
To avoid hazardous activities, activities requiring alertness because dizziness may occur; to request assistance with ambulation

• 
To avoid alcohol, other depressants

• 
To keep out of children’s reach

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