Mosby's 2014 Nursing Drug Reference (40 page)

anakinra (Rx)

(an-ah-kin′rah)

Kineret

Func. class.:
Antirheumatic (DMARD), immunomodulator

Chem. class.:
Recombinant form of human interleukin-1 receptor antagonist (IL-1Ra)

Do not confuse:
Anakinra
/amikacin

ACTION:

A form of human interleukin-1 receptor antagonist (IL-1Ra) produced by DNA technology; blocks activity of IL-1, thereby resulting in decreased inflammation, cartilage degradation, bone resorption

USES:

Reduction in signs and symptoms of moderate to severe active rheumatoid arthritis in patients ≥18 yr who have not responded to other disease-modifying agents

Unlabeled uses:
Cryopyrin-associated periodic syndromes

CONTRAINDICATIONS:

Hypersensitivity to
Escherichia-coli
–derived proteins, product, latex; sepsis

Precautions:
Pregnancy (B), breastfeeding, children, geriatric patients, renal impairment, active infections, immunosuppression, neoplastic disease, asthma

DOSAGE AND ROUTES
Calculator

• Adult:SUBCUT
100 mg/day

Renal dose

• Adult:
CCr <30 ml/min
SUBCUT
100 mg every other day

Available form:
Inj 100 mg/0.67 ml prefilled glass syringe

Administer:
SUBCUT route

• 
Do not use if cloudy, discolored, if particulate is present; protect from light

• 
Do not admix with other sol or medications; do not use filter; give at same time each day

• 
Apply cold compress before, after inj, allow sol to warm to room temp before use

• 
Use middle thigh, abdomen (outside 2 inches from navel), upper outer buttocks, upper outer area of arm; rotate sites, give inj at least 1 inch from old site; do not give in skin that is bruised, red, tender, hard; remove needle cover immediately before use, pull gently back on plunger, if no blood appears, inject entire contents of prefilled syringe; discard any unused portion

SIDE EFFECTS

CNS:
Headache

CV:
Cardiac arrest

EENT:
Sinusitis

GI:
Abdominal pain, nausea, diarrhea

HEMA:
Neutropenia

INTEG:
Rash,
inj site reaction
, allergic reaction

MISC:
Flulike symptoms, infection

MS:
Worsening of RA, arthralgia

RESP:
URI

PHARMACOKINETICS

Terminal half-life 4-6 hr; eliminated renally

INTERACTIONS

• 
Do not use rilonacept

Increase:
risk for severe infection—TNF-blocking agents, do not use together

Decrease:
antibody reactions—vaccines, avoid concurrent use

NURSING CONSIDERATIONS
Assess:

• 
Rheumatoid arthritis:
pain, stiffness, ROM, swelling of joints, baseline, periodically during treatment

• 
For inj site pain, swelling; usually occurs after 2 inj (4-5 days)


 
For infections (increased WBC, fever, flulike symptoms); stop treatment if present, do not start if patient has active infection

• 
CBC with differential, neutrophil counts before treatment, monthly × 3 mo, quarterly for up to 1 yr thereafter

• 
For allergic reactions (rash, dyspnea); discontinue if severe

• 
For urinary status: decreasing urinary output

Evaluate:

• 
Therapeutic response: decreased inflammation, pain in joints

Teach patient/family:

• 
Not to receive vaccines while taking this product; to update vaccines before treatment

• 
About self-administration, if appropriate: inj should be made in thigh, abdomen, upper arm; rotate sites at least 1 inch from old site; give at same time of day, store in refrigerator, do not freeze

• 
To notify prescriber if pregnancy is planned, suspected, to avoid breastfeeding; to notify prescriber of allergic reaction, decreasing urine output, signs/symptoms of infection

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

HIGH ALERT
anastrozole (Rx)

(an-a-stroh′zole)

Arimidex

Func. class.:
Antineoplastic

Chem. class.:
Aromatase inhibitor

ACTION:

Highly selective nonsteroidal aromatase inhibitor that lowers serum estradiol concentrations; many breast cancers have strong estrogen receptors

USES:

Advanced breast carcinoma not responsive to other therapy in estrogen-receptor–positive patients (postmenopausal); patients with advanced disease taking tamoxifen, adjunct therapy for early breast cancer

Unlabeled uses:
Uterine leiomyomata, breast cancer (in those who have received tamoxifen for 2-3 yr)

CONTRAINDICATIONS:

Pregnancy (X), breastfeeding, hypersensitivity

Precautions:
Children, geriatric patients, premenopausal women, osteoporosis, hepatic/cardiac disease

DOSAGE AND ROUTES
Calculator

• Adult: PO
1 mg/day

Available forms:
Tabs 1 mg

Administer:

• 
Give without regard to meals at same time of day

SIDE EFFECTS

CNS:
Hot flashes, headache, light-headedness
, depression, dizziness, confusion, insomnia, anxiety, fatigue, mood changes

CV:
Chest pain,
hypertension
,
thrombophlebitis,
edema
, angina,
MI, cerebral infarct, CVA,
vasodilation

GI:
Nausea, vomiting
, altered taste leading to anorexia, diarrhea, constipation, abdominal pain, dry mouth

GU:
Vaginal bleeding, vaginal dryness, pelvic pain, pruritus vulvae, UTI

HEMA:
Leukopenia

INTEG:
Rash
,
Stevens-Johnson syndrome,
anemia

MISC:
Hypercholesterolemia

MS:
Bone pain, myalgia,
asthenia
, bone loss/osteoporosis, arthralgia, fractures

RESP:
Cough, sinusitis, dyspnea,
pulmonary embolism

PHARMACOKINETICS

Peak 2 hr; half-life 50 hr; excreted in feces, urine, terminal half-life 50 hr

INTERACTIONS

• 
Do not use with oral contraceptives, estrogen, tamoxifen, androstenedione, DHEA

Drug/Lab Test

Increase:
GGT, AST, ALT, alk phos, cholesterol, LDL

NURSING CONSIDERATIONS
Assess:

• 
Bone mineral density, cholesterol, lipid panel, periodically

 
Serious skin reactions:
Stevens-Johnson syndrome

• 
Not effective in hormone-receptor–negative disease, use only in postmenopausal women

Perform/provide:

• 
Storage in light-resistant container at room temp

Evaluate:

• 
Therapeutic response: decreased tumor size, spread of malignancy

Teach patient/family:

• 
To report any complaints, side effects to prescriber

• 
That vaginal bleeding, pruritus, hot flashes reversible after discontinuing treatment

• 
To report continued vaginal bleeding immediately

• 
That
tumor flare
—increase in size of tumor, increased bone pain—may occur and will subside rapidly; may take analgesics for pain

• 
To take adequate calcium and vitamin D due to risk for bone loss/fractures

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

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