Mosby's 2014 Nursing Drug Reference (121 page)

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

demecarium ophthalmic

See
Appendix B

 

denosumab (Rx)

(den-oh′sue-mab)

Prolia, Xgeva

Func. class.:
Bone resorption inhibitor

Chem. class.:
Monoclonal antibody, bone resorption

ACTION:

Neutralizes activity of receptor activator nuclear factor kappa-B ligand (RANKL) by binding to it and blocking its interaction with cell-surface receptors; use of a RANKL inhibitor may reduce bone turnover and decrease tumor burden

USES:

Osteoporosis in postmenopausal women or men at high risk for fractures; increase bone mass in men who are receiving androgen deprivation therapy for prostate cancer and women receiving aromastase inhibitor therapy for breast cancer at high risk for fractures; prevention of skeletal-related events in bone metastases from solid tumors (Xgeva)

CONTRAINDICATIONS:

Hypersensitivity, hypocalcemia

Precautions:
Pregnancy (C), breastfeeding, child/infant/neonate, anemia, coagulopathy, diabetes mellitus, dialysis, eczema, hypoparathyroidism, immunosuppression, latex hypersensitivity, malabsorption syndrome, neoplastic disease, pancreatitis, parathyroid disease, dental/renal/thyroid disease, TB, vit D deficiency

DOSAGE AND ROUTES
Calculator
Postmenopausal osteoporosis

• Adult female: SUBCUT
60 mg q6mo with 1000 mg calcium and 400 international units vitamin D, max 60 mg q6mo

Bone metastases from solid tumors (Xgeva)


Adult: SUBCUT
120 mg q4wk, max 120 mg q4wk; administer with calcium and vitamin D as necessary to prevent hypocalcemia

Prevention of skeletal-related events with bone metastases from solid tumors


Adult: SUBCUT
(Xgeva): 120 mg q4wk

Available forms:
Sol for inj 60 mg/ml (Prolia); 120 mg/1.7 ml (Xgeva)

Administer:
SUBCUT route

• 
Give acetaminophen before and for 72 hr after to decrease pain

• 
Do not use if particulate matter or discoloration is present; sol is clear and colorless to slightly yellow with small white/opalescent particles; remove from refrigerator and allow to warm to room temp (15-30 min)

• 
Use of prefilled syringe with needle safety guard:
leave green guard in original position until after administration, remove and discard needle cap immediately before inj, give by subcut inj in upper arm/thigh or abdomen; after inj, point needle away from people and slide green guard over needle

• 
Use of single-use vials:
use 27G needle, give in upper arm/thigh or abdomen, do not reinsert needle in vial, discard supplies as appropriate

• 
Store and use out of direct sunlight/heat; do not freeze, use within 14 days after removal from refrigerator, store unopened containers in refrigerator

SIDE EFFECTS

CNS:
Chills, fever, flushing, headache, vertigo, neuropathic pain

CV:
Angina,
atrial fibrillation

GI:
Abdominal pain, constipation,
diarrhea
, flatulence, GERD,
vomiting, nausea

GU:
Cystitis, lactation suppression

HEMA:
Anemia, neutropenia

INTEG:
Atopic dermatitis, pruritus

META:
Hypercholesterolemia, hypocalcemia, hypophosphatemia

MS:
Back, bone pain; MS pain, myalgia,
osteonecrosis of the jaw,
atypical low trauma femoral fractures

RESP:
Cough,
dyspnea

SYST:
Infection, secondary malignancy

PHARMACOKINETICS

Terminal half-life 25.4 days, bioavailability 62%, max serum concentration 3-21 days, steady state 6 mo

INTERACTIONS

Increase:
infection, possible—immunosupressives, corticosteroids

Increase:
osteonecrosis of the jaw, possible—antineoplastics, corticosteroids

NURSING CONSIDERATIONS
Assess:


 
Acute acute-phase reaction:
fever, myalgia, headache, flulike symptoms for 72 hr after inj, usually resolves after 72 hr

• 
Blood tests:
serum calcium, creatitine, BUN, magnesium, phosphate

• 
Hypocalcemia:
paresthesia, twitching, laryngospasm, Chvostek’s and Trouseau’s signs; preexisting hypocalcemia should be corrected before treatment; patient with vit D deficiency may require higher doses of vit D

• 
Hypercalcemia:
nausea, vomiting, anorexia, weakness, thirst, constipation, dysrhythmias


 
Dental status:
correct dental complications before product use; good oral hygiene should be maintained; if dental work is to be performed, antiinfectives should be given to prevent osteonecrosis of the jaw


 
Infection:
do not start treatment in patients with active infections; infections should be resolved first

Evaluate:

• 
Therapeutic response: increased/maintained bone density, decreased calcium levels

Teach patient/family:

• 
To report hypercalcemic relapse: nausea, vomiting, bone pain, thirst

• 
To continue with dietary recommendations, including additional calcium and vit D

• 
To avoid use during pregnancy and breastfeeding; to notify prescriber if pregnancy is planned, suspected

• 
To use acetaminophen before and for 72 hr after inj to lessen bone pain

• 
About the purpose of this product and its expected results

• 
To avoid OTC, Rx medications and herbs and supplements unless approved by prescriber

• 
To exercise regularly, stop smoking, and avoid alcohol to maintain bone health

• 
To inform all health care providers of product use; to avoid dental procedures/surgery if possible; to practice good oral hygiene

• 
That lab tests and follow-up exams will be required

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

desipramine (Rx)

(dess-ip′ra-meen)

Norpramin

Func. class.:
Antidepressant, tricyclic

Chem. class.:
Dibenzazepine, secondary amine

ACTION:

Blocks reuptake of norepinephrine, serotonin into nerve endings, thereby increasing action of norepinephrine, serotonin in nerve cells

USES:

Depression

Unlabeled uses:
Chronic pain, postherpetic neuralgia, ADHD, bulimia, diabetic neuropathy, panic disorder, social phobia

CONTRAINDICATIONS:

Hypersensitivity to tricyclics, closed-angle glaucoma, acute MI

Precautions:
Pregnancy (C), breastfeeding, geriatric patients, severe depression, increased intraocular pressure, seizure disorder, CV disease, urinary retention, cardiac dysrhythmias, cardiac conduction disturbances, family history of sudden death, prostatic hypertrophy, thyroid disease

 

Black Box Warning:

Children <18 yr, suicidal patients

DOSAGE AND ROUTES
Calculator
Major depression


Adult: PO
50-75 mg/day in 1-4 divided doses, titrate by 25-50 mg weekly up to 300 mg/day in single or divided doses

• Geriatric: PO
25 mg/day at bedtime, titrate weekly, may increase to 150 mg/day


Adolescent: PO
25-50 mg/day in divided doses, max 150 mg/day


Child 6-12 yr: PO
1-3 mg/kg/day in divided doses; give >3 mg/kg/day with close medical monitoring; max 5 mg/kg/day

Bulimia nervosa (unlabeled)


Adult: PO
25 mg tid, may titrate to 200 mg/day by 25-50 mg/day at weekly intervals

ADHA (unlabeled)


Child ≥5 yr: PO
up to 3.5 mg/kg/day divided BID

Neuropathic pain/postherpetic neuralgia (unlabeled)


Adult: PO
10-25 mg at bedtime, titrate to relief

Diabetic neuropathy (unlabeled)


Adult: PO
75-150 mg

Available forms:
Tabs 10, 25, 50, 75, 100, 150 mg

Administer:

• 
Increased fluids, bulk in diet for constipation, especially in geriatric patients; with food or milk for GI symptoms; crushed if patient is unable to swallow medication whole

• 
Dosage at bedtime if oversedation occurs during day; may take entire dose at bedtime; geriatric patients may not tolerate once-daily dosing

SIDE EFFECTS

CNS:
Dizziness, drowsiness
, confusion, headache, anxiety, tremors, stimulation, weakness, insomnia, nightmares, EPS (geriatric patients), increased psychiatric symptoms, paresthenia,
suicidal ideation

CV:
Orthostatic hypotension, ECG changes, tachycardia, hypertension
, palpitations

EENT:
Blurred vision
, tinnitus, mydriasis, ophthalmoplegia

GI:
Diarrhea
,
dry mouth
, nausea, vomiting,
paralytic ileus,
increased appetite, cramps, epigastric distress, jaundice,
hepatitis,
stomatitis, constipation, weight gain

GU:
Retention
,
acute renal failure

HEMA:
Agranulocytosis, thrombocytopenia, eosinophilia, leukopenia

INTEG:
Rash, urticaria, sweating, pruritus, photosensitivity

PHARMACOKINETICS

Well absorbed, widely distributed, protein binding 92%, extensively metabolized in the liver to active metabolite of imipramine, half-life 7-60 hr

INTERACTIONS

Increase:
serotonin syndrome, neuroleptic malignant syndrome—SSRIs, SNRIs, serotonin-receptor agonists, other tricyclic antidepressants

Increase:
CNS depression—alcohol, barbiturates, opioids, CNS depressants

Increase:
desipramine level—cimetidine, diltiazem, fluvoxaMINE, FLUoxetine, PARoxetine, sertraline, verapamil

Increase:
life-threatening B/P elevations, do not use concurrently—cloNIDine

Increase:
hypertension—EPINEPHrine, norepinephrine

Increase:
hyperpyrexia, seizures, excitation; do not use within 14 days of MAOIs

Increase:
QT interval—tricyclics, SUNItinib, vorinostat, ziprasidone, gatifloxacin, levofloxacin, moxifloxacin, sparfloxacin, class IA/III antidysrhythmics

Drug/Herb

Increase:
serotonin syndrome, avoid concurrent use—St. John’s wort

Increase:
CNS depression—kava, valerian

Drug/Lab Test

Increase:
serum bilirubin, blood glucose, alk phos

NURSING CONSIDERATIONS
Assess:

• 
B/P (lying, standing), pulse q4hr; if systolic B/P drops 20 mm Hg, hold product, notify prescriber; take VS q4hr in patients with cardiovascular disease

• 
Hepatic studies: AST, ALT, bilirubin; thyroid function studies

• 
Weight weekly; appetite may increase with product


 
ECG
for flattening T wave, bundle branch block, AV block, dysrhythmias in cardiac patients

• 
EPS
primarily in geriatric patients: rigidity, dystonia, akathisia


 
Seizure activity
in those with a history of seizures

 

Black Box Warning:

Mental status: mood, sensorium, affect,
suicidal tendencies
, increase in psychiatric symptoms (depression, panic); this product is not indicated for children

• 
Urinary retention, constipation; constipation most likely in children

• 
Withdrawal symptoms:
headache, nausea, vomiting, muscle pain, weakness; not usual unless product discontinued abruptly

• 
Alcohol consumption; if consumed, hold dose until morning

• 
Check to confirm that PO medication is swallowed

Evaluate:

• 
Therapeutic response: decreased depression

Teach patient/family:

• 
That therapeutic effects may take 2-3 wk

 

Black Box Warning:

That suicidal thoughts/behaviors may occur; to notify prescriber immediately

• 
To use caution when driving, performing other activities requiring alertness because of drowsiness, dizziness, blurred vision

• 
To avoid alcohol, other CNS depressants

• 
Not to discontinue medication abruptly after long-term use because this may cause nausea, headache, malaise

• 
To wear sunscreen or large hat because photosensitivity occurs

TREATMENT OF OVERDOSE:

ECG monitoring; lavage, activated charcoal; administer anticonvulsant

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