Mosby's 2014 Nursing Drug Reference (343 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

raloxifene (Rx)

(ral-ox′ih-feen)

Evista

Func. class.:
Bone resorption inhibitor

Chem. class.:
Hormone modifier, selective estrogen receptor modulator (SERM)

ACTION:

Tissue-selective estrogen agonist/antagonist; agonist activity in bone and on lipid metabolism; antagonist activity on breast and uterus; reduces resorption of bone and decreases bone turnover

USES:

Prevention, treatment of osteoporosis in postmenopausal women; breast cancer prophylaxis in postmenopausal women with osteoporosis or in postmenopausal women at high risk for developing the disease

Unlabeled uses:
Uterine leiomyomata in postmenopausal women with osteoporosis or in postmenopausal women who are at high risk for developing the disease

CONTRAINDICATIONS:

Pregnancy (X), breastfeeding, hypersensitivity

 

Black Box Warning:

Women with active or history of venous thromboembolic events

Precautions:
CV/hepatic disease, cervical/uterine cancer, elevated triglycerides, pulmonary embolism

 

Black Box Warning:

Stroke

DOSAGE AND ROUTES
Calculator

• Adult:
PO
60 mg/day, max 60 mg/day

Available forms:
Tabs 60 mg

Administer:

• 
PO: without regard to meals, vit D

• 
Add calcium supplement if inadequate

SIDE EFFECTS

CNS:
Insomnia

CV:
Hot flashes, peripheral edema,
thromboembolism, stroke

EENT:
Retinal vein occlusion (rare)

GI:
Nausea
, vomiting, diarrhea, dyspepsia

GU:
Vaginitis, leukorrhea, cystitis,
hot flashes
, vaginal bleeding

INTEG:
Rash, sweating

META:
Weight gain, peripheral edema

MS:
Arthralgia, myalgia,
leg cramps
, arthritis

RESP:
Sinusitis, pharyngitis, increased cough, pneumonia, laryngitis, bronchitis,
pulmonary embolism,
flulike symptoms

PHARMACOKINETICS

Elimination half-life 28-32 hr; excreted in feces, breast milk; highly bound to plasma proteins

INTERACTIONS

• 
Administer cautiously with other highly protein-bound products, systemic estrogens

Decrease:
action of anticoagulants, dessicated thyroid, levothyroxine, liotrix

Decrease:
action of raloxifene—ampicillin, cholestyramine

Drug/Food

Decrease:
raloxifene—soy

Drug/Lab Test

Increase:
apolipoprotein A-1, hormone-binding globulin

Decrease:
total cholesterol, LDL, lipoprotein, apolipoprotein B, serum calcium, albumin, total protein

NURSING CONSIDERATIONS
Assess:

 

Black Box Warning:

History of stroke, TIA, thrombosis, atrial fibrillation, hypertension, smoking; venous thrombosis may occur, avoid prolonged sitting; discontinue 3 days before surgery, other immobilization

• 
Bone density test at baseline, throughout treatment, bone-specific alk phos, osteocalcin

Evaluate:

• 
Therapeutic response: prevention, treatment of osteoporosis in postmenopausal women; prevention of breast can
cer in postmenopausal women with osteoporosis or in those who are at high risk for developing the disease

Teach patient/family:

 

Black Box Warning:

To discontinue product 72 hr before prolonged bedrest; to avoid staying in one position for long periods

• 
To take calcium supplements, vit D if intake is inadequate

• 
To increase exercise using weights

• 
To stop smoking; to decrease alcohol consumption

• 
That product does not help to control hot flashes

 
To report fever, acute migraine, insomnia, emotional distress; urinary tract infection, vaginal burning/itching; swelling, warmth, pain in calves

 
To notify prescriber if pregnancy planned, suspected, pregnancy category (X); to avoid breastfeeding

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

raltegravir (Rx)

(ral-teg′ra-vir)

Isentress

Func. class.:
Antiretroviral

Chem. class.:
HIV integrase strand transfer inhibitor (ISTIs)

ACTION:

Inhibits catalytic activity of HIV integrase, which is an HIV-encoded enzyme needed for replication

USES:

HIV in combination with other antiretrovirals

CONTRAINDICATIONS:

Breastfeeding, hypersensitivity

Precautions:
Pregnancy (C), children, geriatric patients, hepatic disease, immune reconstitution syndrome, hepatitis, antimicrobial resistance, lactase deficiency

DOSAGE AND ROUTES
Calculator

• Adult and adolescent ≥16 yr:
PO
400 mg bid; if using with rifampin, give 800 mg bid; max 800 mg/day with/without food

Available forms:
Tabs 400 mg

Administer:

• 
Do not break, crush, chew tabs

• 
May give without regard to meals, with 8 oz of water

SIDE EFFECTS

CNS:
Fatigue
, fever,
dizziness, headache
, asthenia,
suicidal ideation

CV:
MI

GI:
Nausea
, vomiting, diarrhea, abdominal pain, asthenia, gastritis,
hepatitis

GU:
Oliguria, proteinuria, hematuria, glomerulonephritis, acute renal failure, renal tubular necrosis

HEMA:
Anemia, neutropenia

INTEG:
Rash, urticaria, pruritus, pain or phlebitis at IV site, unusual sweating, alopecia

META:
Hyperamylasia, hyperglycemia

MS:
Myopathy,
rhabdomyolysis

SYST:
Immune reconstitution syndrome

PHARMACOKINETICS

Max absorption 3 hr if taken on an empty stomach; terminal half-life 9 hr; metabolized in the liver by uridine diphosphate glucuronosyltransferase (UGT A1A enzyme system); excreted in feces 51%, urine 32%

INTERACTIONS

Increase:
raltegravir effect—proton pump inhibitors, H
2
blockers; UGT1A1 inhibitors (atazanavir)

 
Increase:
rhabdomyolysis, myopathy, elevated CPK—fibric acid derivatives, HMG-CoA reductase inhibitors

Decrease:
raltegravir levels—rifampin, efavirenz, tenofovir, tipranavir/ritonavir

Drug/Lab Test

Increase:
AST, ALT, GGT, total bilirubin, alk phos, amylase/lipase, CK, serum glucose, total/HDL/LDL cholesterol

Decrease:
Hgb, platelets, ANC

NURSING CONSIDERATIONS
Assess:

• 
HIV infection:
CD4, T-cell count, plasma HIV RNA, viral load; resistance testing before therapy, at treatment failure

 
Rhabdomyolysis:
Assess for calf pain, increased CPK, product should be discontinued

• 
Skin eruptions: rash, urticaria, itching

• 
Suicidal thoughts/behaviors:
monitor for depression; more common in those with mental illness

• Immune reconstitution syndrome, usually during initial phase of treatment, may give anti-infective before starting

• 
Monitor total/HDL/LDL cholesterol baseline and periodically, all may be elevated

Perform/provide:

• 
Storage at room temp

Evaluate:

• 
Therapeutic response: improvement in CD4 counts, T-cell counts

Teach patient/family:

• 
To take as prescribed; if dose missed, to take as soon as remembered up to 1 hr before next dose; not to double dose; not to share with others

• 
That sexual partners need to be told that patient has HIV; that product does not cure infection, just controls symptoms, does not prevent infecting others

 
To report sore throat, fever, fatigue (may indicate superinfection)

• 
That product must be taken in equal intervals 2×/day to maintain blood levels for duration of therapy

 
To notify prescriber immediately of suicidal thoughts/behaviors

• 
To notify prescriber if pregnancy planned, suspected; to avoid breastfeeding

• 
To continue with follow-up exams, blood work

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