Mosby's 2014 Nursing Drug Reference (190 page)

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

fulvestrant (Rx)

(full-vess′trant)

Faslodex

Func. class.:
Antineoplastic

Chem. class.:
Estrogen-receptor antagonist

ACTION:

Inhibits cell division by competitive binding to cytoplasmic estrogen receptors, downregulates estrogen receptors

USES:

Advanced breast carcinoma in estrogen-receptor–positive patients (usually postmenopausal)

Unlabeled uses:
Loading dose for metastatic breast cancer

CONTRAINDICATIONS:

Pregnancy (D), breastfeeding, children, hypersensitivity

Precautions:
Hepatic disease, jaundice, thrombocytopenia, biliary tract disease, coagulopathy

DOSAGE AND ROUTES
Calculator

• Adult:
IM
500 mg as 2, 5-ml injections on days 1, 15, 29 and monthly thereafter

Available forms:
Inj 50 mg/ml

Administer:
IM route

• 
IM 5 ml give one inj in each buttock slowly

• 
Antiemetic 30-60 min before product to prevent vomiting prn

SIDE EFFECTS

CNS:
Headache
, depression, dizziness, insomnia, paresthesia, anxiety

GI:
Nausea, vomiting
, anorexia, constipation, diarrhea, abdominal pain,
hepatitis, hepatic failure, hyperbilirubinemia

HEMA:
Anemia

INTEG:
Rash
, sweating,
hot flashes
, inj site pain

MS:
Bone pain, arthritis, back pain

RESP:
Pharyngitis, dyspnea, cough

SYST:
Angioedema

PHARMACOKINETICS

Half-life 40 days, metabolized by CYP3A4, excretion in feces 90%

INTERACTIONS

Increase:
Bleeding—anticoagulants, do not use concurrently

Drug/Lab Test

Increase:
LFTs

NURSING CONSIDERATIONS
Assess:

• 
For anticoagulant use

• 
For side effects; report to prescriber

Perform/provide:

• 
Liquid diet, if needed, including cola, gelatin; dry toast or crackers may be added if patient is not nauseated or vomiting

• 
Store in refrigerator, protect from light

Evaluate:

• 
Therapeutic response: decreased tumor size, spread of malignancy

Teach patient/family:

• 
To report any complaints, side effects to prescriber

• 
To report vaginal bleeding immediately

• 
That tumor flare (increase in size of tumor, increased bone pain) may occur, will subside rapidly; that analgesics may be taken for pain

• 
That premenopausal women must use mechanical birth control because ovulation may be induced; not to breastfeed

• 
To use contraception to prevent pregnancy; pregnancy category (D)

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

furosemide (Rx)

(fur-oh′se-mide)

Lasix

Func. class.:
Loop diuretic

Chem. class.:
Sulfonamide derivative

Do not confuse:
furosemide
/torsemide
Lasix
/Luvox/Lomotil/Lanoxin

ACTION:

Inhibits reabsorption of sodium and chloride at proximal and distal tubule and in the loop of Henle

USES:

Pulmonary edema; edema with CHF, hepatic disease, nephrotic syndrome, ascites, hypertension

Unlabeled uses:
Hypercalcemia with malignancy, hypertensive emergency/urgency, pulmonary edema or prevention of hemodynamic effects associated with blood product transfusion, ascites

CONTRAINDICATIONS:

Breastfeeding, infants, anuria, hypovolemia, electrolyte depletion

Precautions:
Pregnancy (C), diabetes mellitus, dehydration, severe renal disease, cirrhosis, ascites, hypersensitivity to sulfonamides/thiazides

DOSAGE AND ROUTES
Calculator
Edema

• Adult:
PO
20-80 mg/day in
AM
; may give another dose after 6 hr up to 600 mg/day;
IM/IV
20-40 mg; increase by 20 mg q2hr until desired response

• Child:
PO/IM/IV
2 mg/kg; may increase by 1-2 mg/kg q6-8hr up to 6 mg/kg

Acute pulmonary edema

• Adult:
IV
40 mg given over several min, repeated after 1 hr; increase to 80 mg if needed

• Child:
IV/IM
1-2 mg/kg q6-12hr, max 6 mg/kg/dose

• Premature neonate >32 wk postconceptional age:
IV/IM
1-2 mg/kg q12-24hr

• Premature neonate ≤32 wk postconceptional age:
IV/IM
max 1 mg/kg initially

Antihypercalcemia

• Adult:
IM/IV
80-100 mg q1-4hr or
PO
120 mg/day or divided bid

• Child:
IM/IV
25-50 mg, repeat q4hr if needed

Acute/chronic renal failure

• Adult:
PO
80 mg/day, increase by 80-120 mg/day to desired response;
IV
100-200 mg, max 600-800 mg

Hypertensive emergency/urgency (unlabeled)

• Adult:
IV
40-80 mg

Pulmonary edema/prevention of adverse hemodynamic effects associated with blood product transfusion (unlabeled)

• Adult:
IV
40 mg injected slowly then 80 mg injected slowly after 2 hr if needed

• Child:
IM/IV
1-2 mg/kg q6-12hr

• Premature neonate >32 wk postconceptional age:
IM/IV
1-2 mg/kg q12-24hr

• Premature neonate ≤32 wk postconceptional age:
IM/IV
Max 1 mg/kg, give no more frequently than q24hr

Available forms:
Tabs 20, 40, 80 mg; oral sol 8 mg/ml, 10 mg/ml; inj 10 mg/ml

Administer:

• 
In
AM
to avoid interference with sleep if using product as diuretic

• 
Potassium replacement if potassium <3 mg/dl

PO route

• 
PO with food if nausea occurs; absorption may be decreased slightly; tabs may be crushed

IV route

• 
Undiluted; may be given through
Y
-tube or 3-way stopcock; give ≤20 mg/min

Intermittent IV Infusion route

• 
May be added to NS or D
5
W; if large doses required and given as IV inf, max 4 mg/min; use inf pump

Y-site compatibilities:
Acyclovir, alfentanil, allopurinol, alprostadil, amifostine, amikacin, aminocaproic acid, aminophylline, amphotericin B cholesteryl/lipid complex/liposome, anidulafungin, argatroban, ascorbic acid, atenolol, atropine, azaTHIOprine, aztreonam, bivalirudin, bleomycin, bumetanide, calcium chloride/gluconate, CARBOplatin, cefamandole, ceFAZolin, cefepime, cefme-tazole, cefonicid, cefoperazone, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, ceftobiprole, cefTRIAXone, cefuroxime, cephalothin, cephapirin, chloramphenicol, CISplatin, cladribine, clindamycin, cyanocobalamin, cyclophosphamide, cycloSPORINE, cytarabine, DACTINomycin, DAPTOmycin, dexamethasone, dexmedetomidine, digoxin, DOCEtaxel, doripenem, doxacurium, DOXOrubicin liposome, enalaprilat, ePHEDrine, EPINEPHrine, etoposide, fentaNYL, fludarabine, fluorouracil, folic acid, foscarnet, gallium nitrate, ganciclovir, granisetron, heparin, hydrocortisone, HYDROmorphone, ifosfamide, imipenem-cilastatin, indomethacin, insulin (regular), isosorbide, kanamycin, leucovorin, lidocaine, linezolid, LORazepam, LR, mannitol, mechlorethamine, melphalan, meropenem, methicillin, methotrexate, methylPREDNISolone, metoprolol, metroNIDAZOLE, mezlocillin, micafungin, miconazole, mitoMYcin, moxalactam, multiple vitamin injection, nafcillin, naloxone, nitroprusside, octreotide, oxacillin, oxaliplatin, oxytocin, PACLitaxel, palonosetron, pamidronate, pantoprazole, PEMEtrexed, penicillin G, PENTobarbital, PHENobarbital, phytonadione, piperacillin, piperacillin-tazobactam, potassium chloride, procainamide,
propofol, propranolol, ranitidine, remifentanil, Ringer’s, ritodrine, sargramostim, sodium acetate/bicarbonate, succinylcholine, SUFentanil, temocillin, teniposide, theophylline, thiopental, thiotepa, ticarcillin, ticarcillin-clavulanate, tigecycline, tirofiban, TNA, tobramycin, urokinase, vit B/C, voriconazole, zoledronic acid

SIDE EFFECTS

CNS:
Headache, fatigue, weakness, vertigo, paresthesias

CV:
Orthostatic hypotension, chest pain, ECG changes,
circulatory collapse

EENT:
Loss of hearing, ear pain, tinnitus, blurred vision

ELECT:
Hypokalemia, hypochloremic alkalosis, hypomagnesemia, hyperuricemia, hypocalcemia, hyponatremia
, metabolic alkalosis

ENDO:
Hyperglycemia

GI:
Nausea
, diarrhea, dry mouth, vomiting, anorexia, cramps, oral, gastric irritations, pancreatitis

GU:
Polyuria
,
renal failure,
glycosuria

HEMA:
Thrombocytopenia, agranulocytosis, leukopenia, neutropenia, anemia

INTEG:
Rash, pruritus
, purpura,
Stevens-Johnson syndrome,
sweating, photosensitivity, urticaria

MS:
Cramps, stiffness

PHARMACOKINETICS

PO:
Onset 1 hr, peak 1-2 hr, duration 6-8 hr, absorbed 70%

IV:
Onset 5 min; peak 1/2 hr; duration 2 hr (metabolized by the liver 30%); excreted in urine, some as unchanged product, and feces; crosses placenta; excreted in breast milk; half-life 1/2-1 hr

INTERACTIONS

Increase:
toxicity—lithium, nondepolarizing skeletal muscle relaxants, digoxin

Increase:
hypotensive action of antihypertensives, nitrates

Increase:
ototoxicity—aminoglycosides, CISplatin, vancomycin

Increase:
effects of anticoagulants, salicylates

Decrease:
furosemide effect—probenecid

Drug/Lab Test

Interference:
GTT

Increase:
LDL

NURSING CONSIDERATIONS
Assess:

• 
CHF:
weight, I&O daily to determine fluid loss; effect of product may be decreased if used daily

• 
Hypertension:
B/P lying, standing; postural hypotension may occur

• 
Metabolic alkalosis: drowsiness, restlessness

• 
Hypokalemia:
postural hypotension, malaise, fatigue, tachycardia, leg cramps, weakness

• 
Rashes, temp elevation daily

• 
Confusion, especially in geriatric patients; take safety precautions if needed

• 
Hearing,
including tinnitus and hearing loss, when giving high doses for extended periods

• 
Rate, depth, rhythm of respiration, effect of exertion, lung sounds

• 
Electrolytes (potassium, sodium, chloride); include BUN, blood glucose, CBC, serum creatinine, blood pH, ABGs, uric acid

• 
Glucose in urine if patient diabetic

• 
Allergies to sulfonamides, thiazides

Perform/provide:

• 
Increased fluid intake 2-3 L/day unless contraindicated

Evaluate:

• 
Therapeutic response: improvement in edema of feet, legs, sacral area (CHF); increase urine output, decreased B/P; decreased calcium levels (hypercalcemia)

Teach patient/family:

• 
To discuss the need for a high-potassium diet or potassium replacement with prescriber

• 
To rise slowly from lying or sitting position because orthostatic hypotension may occur

• 
To recognize adverse reactions that may occur: muscle cramps, weakness, nausea, dizziness

• 
About the entire treatment regimen, including exercise, diet, stress relief for hypertension

• 
To take with food or milk for GI symptoms

• 
To use sunscreen or protective clothing to prevent photosensitivity

• 
To take early in the day to prevent sleeplessness

• 
To avoid OTC medications unless directed by prescriber

TREATMENT OF OVERDOSE:

Lavage if taken orally; monitor electrolytes; administer dextrose in saline; monitor hydration, CV, renal status

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