Mosby's 2014 Nursing Drug Reference (31 page)

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

amifostine (Rx)

(a-mi-foss′teen)

Ethyol

Func. class.:
Cytoprotective agent for cisplatin/radiation

ACTION:

Binds and detoxifies damaging metabolites of cisplatin, alkylating agents, DNA-reactive agents, ionizing radiation by converting this product by alk
phos in tissue to an active free thiol compound

USES:

To reduce renal toxicity when cisplatin is given repeatedly for ovarian cancer; to reduce xerostomia (dry mouth) after radiation therapy for head, neck cancer

Unlabeled uses:
To prevent or reduce cisplatin-induced neurotoxicity, cyclophosphamide-induced granulocytopenia; to prevent or reduce toxicity of radiation therapy; to reduce toxicity of paclitaxel, myelodysplastic syndrome (MDS)

CONTRAINDICATIONS:

Breastfeeding, hypersensitivity to mannitol, aminothiol; hypotension, dehydration

Precautions:
Pregnancy (C), children, geriatric patients, CV disease, hypocalcemia, MI, radiation therapy, stroke, dehydration, hypotension, chemotherapy, exfoliative dermatitis

DOSAGE AND ROUTES
Calculator
Reduction of renal damage with cisplatin

•Adult: IV
910 mg/m
2
/day within 1/2 hr before chemotherapy, give over 15 min; may reduce dose to 740 mg/m
2
if higher dose is poorly tolerated

Xerostomia prophylaxis

•Adult: IV
200 mg/m
2
/day over 3 min as inf 15-30 min before radiation therapy

Bone marrow suppression/nephrotoxicity/neurotoxicity prophylaxis (unlabeled)

•Adult: IV
100-340 mg/m
2
/day over 15 min before each dose of chemotherapy/radiation

Myelodyplastic syndrome (MDS) (unlabeled)

•Adult: IV
100 mg/m
2
3×/wk, max 300 mg/m
2
3×/wk

Available forms:
Powder for inj, lyophilized 500 mg/vial

Administer:
Intermittent IV INF route

• 
Intermittent inf after reconstituting 500 mg/9.7 ml of sterile 0.9% NaCl, further dilute with 0.9% NaCl to concentration of 5-40 mg/ml, give over 15 min within 1/2 hr of chemotherapy, place patient in supine position during inf

• 
Xerostomia:
Give over 3 min 15-30 min before radiation

Y-site compatibilities:
Amikacin, aminophylline, amphotericin B liposome, ampicillin, ampicillin/sulbactam, aztreonam, bivalirudin, bleomycin, bumetanide, buprenorphine, butorphanol, calcium gluconate, carboplatin, carmustine, caspofungin, ceFAZolin, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, cimetidine, ciprofloxacin, clindamycin, cyclophosphamide, cytarabine, dacarbazine, DACTINomycin, DAPTOmycin, DAUNOrubicin, dexamethasone, dexmedetomidine, diltiazem, diphenhydrAMINE, DOBUTamine, DOCEtaxel, DOPamine, DOXOrubicin, doxycycline, droperidol, enalaprilat, epirubicin, ertapenem, etoposide, famotidine, fenoldopam, floxuridine, fluconazole, fludarabine, fluorouracil, furosemide, gallium, gentamicin, granisetron, haloperidol, heparin, hydrocortisone, HYDROmorphone, IDArubicin, ifosfamide, imipenem-cilastatin, leucovorin, levofloxacin, linezolid, LORazepam, magnesium sulfate, mannitol, mechlorethamine, meperidine, mesna, methotrexate, methylPREDNISolone, metoclopramide, metroNIDAZOLE, mezlocillin, milrinone, mitoMYcin, morphine, nalbuphine, nesiritide, netilmicin, octreotide, ondansetron, oxaliplatin, PACLitaxel, palonosetron, pantoprazole, pemetrexed, piperacillin, plicamycin, potassium chloride, promethazine, ranitidine, sodium bicarbonate, streptozocin, tacrolimus, teniposide, thiotepa, ticarcillin, ticarcillin/clavulanate, tigecycline, tirofiban, tobramycin, trastuzumab, trimethoprim-sulfamethoxazole, trimetrexate,
vancomycin, vinBLAStine, vinCRIStine, voriconazole, zidovudine

Solution compatibility:
0.9% NaCl

Additive incompatibilities:
Do not mix with other products

SIDE EFFECTS

CNS:
Dizziness, somnolence, loss of consciousness,
seizures

CV:
Hypotension

EENT:
Sneezing

GI:
Nausea, vomiting
, hiccups,
diarrhea

INTEG:
Flushing, feeling of warmth

MISC:
Hypocalcemia
, rash, chills,
anaphylaxis, toxic epidermal necrolysis, toxicoderma, Stevens-Johnson syndrome, exfoliative dermatitis, erythema multiforme

PHARMACOKINETICS

Metabolized to free thiol compound, half-life 8 min, onset 5-8 min

INTERACTIONS

Increase:
hypotension—antihypertensives

Drug/Lab

Decrease:
calcium

NURSING CONSIDERATIONS
Assess:

• 
B/P before and q5min during inf; antihypertensives should be discontinued 24 hr before inf if severe hypotension occurs, give IV 0.9% NaCl to expand fluid volume, place patient in modified Trendelenburg position

• 
Fluid status before administration; administer antiemetic before administration to prevent severe nausea and vomiting; may also give dexamethasone 20 mg IV and a serotonin antagonist such as ondansetron, dolasetron, granisetron

• 
Calcium levels before and during treatment; may cause hypocalcemia, calcium supplements may be needed

• 
Xerostomia:
mouth lesions, dry mouth during therapy


 
Anaphylaxis:
Rash, pruritus, wheezing, laryngeal edema, discontinue; give antihistamines, EPINEPHrine depending on severity; reactions may be delayed, if severe product should be permanently discontinued; other serious skin disorders (Stevens-Johnson syndrome, toxic epidermal necrolysis, toxicoderma, erythema multiforme, exfoliative dermatitis)

Evaluate:

• 
Therapeutic response: prevention of renal toxicity associated with cisplatin therapy; decreased xerostomia associated with radiation therapy of head, neck cancer

Teach patient/family:

• 
To stay supine during inf, B/P will be monitored often

• 
To drink fluids

• 
To report signs, symptoms, severe reactions

• 
The reason for the medication and expected results

• 
That side effects may include severe nausea, vomiting, decreased B/P, chills, dizziness, somnolence, hiccups, sneezing, skin reactions

• 
Not to breastfeed

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

amikacin (Rx)

(am-i-kay′sin)

Amikin

Func. class.:
Antiinfective

Chem. class.:
Aminoglycoside

Do not confuse:
Amikin
/Amicar
Amikacin
/anakinra

ACTION:

Interferes with protein synthesis in bacterial cells by binding to ribosomal subunits, which causes misreading of genetic code; inaccurate peptide sequence forms in protein chain, thereby causing bacterial death

USES:

Severe systemic infections of CNS, respiratory tract, GI tract, urinary tract, bone, skin, soft tissues caused by
Staphylococcus aureus (MSSA), Pseudomonas aeruginosa, Escherichia coli, Enterobacter, Acinetobacter, Providencia, Citrobacter, Serratia, Proteus, Klebsiella pneumoniae

Unlabeled uses:
Mycobacterium avium
complex (MAC) (intrathecal or intraventricular) in combination; aerosolization, actinomycotic mycetoma, febrile neutropenia

CONTRAINDICATIONS:

Pregnancy (D), mild to moderate infections, hypersensitivity to aminoglycosides, sulfites

Precautions:
Breastfeeding, neonates, geriatric patients, myasthenia gravis, Parkinson’s disease

 

Black Box Warning:

Hearing impairment, renal/neuromuscular disease

DOSAGE AND ROUTES
Calculator
Severe systemic infections

• Adult and child:
IV INF
10-15 mg/kg/day in 2-3 divided doses q8-12hr in 100-200 ml D
5
W over 30-60 min, max 1.5 g; use for 7-10 days; decreased doses are needed with poor renal function as determined by blood levels, renal studies;
pulse dosing
(once-daily dosing) may be used with some infections;
IM
10-15 mg/kg/day in divided doses q8-12hr; daily or extended-interval dosing as an alternative dosing regimen

• Infant: IV/IM
10 mg/kg initially then 7.5 mg/kg q12hr

• Neonate:
IV/IM
10 mg/kg initially then 7.5 mg/kg q12hr

• Premature neonate:
10 mg/kg initially then 7.5 mg/kg q8-12hr

Severe urinary tract infections

• Adult:IM
10-15 mg/kg/day divided q8-12hr

Hemodialysis

• Adult:IM/IV
7.5 mg/kg followed by 5 mg/kg 3×/wk after each dialysis session (for TIW dialysis)

Renal dose (pulse dosing)

•Adult: IV
CCr 40-59 ml/min 15 mg/kg q36hr; CCr 20-39 ml/min 15 mg/kg q48hr; <20 ml/min adjust based on serum concentrations and MIC

Mycobacterium avium complex (MAC) (unlabeled)

• Adult and adolescent:
IV
7.5-15 mg/kg divided q12-24hr as part of multiple-drug regimen

• Child:
IV
15-30 mg/kg/day divided q12-24hr as part of multiple-drug regimen, max 1.5 g/day

Actinomycotic mycetoma (unlabeled)

• Adult:IM/IV
15 mg/kg/day in 2 divided doses × 3 wk with co-trimoxazole for 5 wk; repeat cycle once, may be repeated 2×

Available forms:
Inj 50, 250 mg/ml

Administer:
IM route

• 
Inj in large muscle mass; rotate inj sites

• 
Obtain C&S before administration, begin treatment before results

• 
Obtain peak 1 hr after IM, trough before next dose

Intermittent IV INF route

• 
Dilute 500 mg of product/100-200 ml of D
5
W, 0.9% NaCl and give over 1/2-1 hr; dilute in sufficient volume to allow for inf over 1-2 hr (infants); flush after administration with D
5
W or 0.9% NaCl; sol clear or pale yellow; discard if precipitate or dark color develops

• 
In children, amount of fluid will depend on ordered dose; in infants, infuse over 1-2 hr

• 
In evenly spaced doses to maintain blood level, separate from penicillins by at least 1 hr

Y-site compatibilities:
Acyclovir, aldesleukin, alfentanil, amifostine, aminophylline, amiodarone, amsacrine, anidulafungin, ascorbic acid, atracurium, atropine, aztreonam, benztropine, bivalirudin, bumetanide, buprenorphine, butorphanol, calcium chloride/gluconate, CARBOplatin, caspofungin, ceFAZolin, cefepime, cefonicid, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, chloramphenicol, chlorproMAZINE, cimetidine, cisatracurium, CISplatin, clindamycin, codeine, cyanoco
balamin, cyclophosphamide, cycloSPORINE, cytarabine, DACTINomycin, DAPTOmycin, dexamethasone, dexmedetomidine, digoxin, diltiazem, diphenhydrAMINE, DOBUTamine, DOCEtaxel, DOPamine, doripenem, doxacurium, DOXOrubicin, doxycycline, eftifibatide, enalaprilat, ePHEDrine, EPINEPHrine, epirubicin, epoetin alfa, ertapenem, erythromycin, esmolol, etoposide, famotidine, fentaNYL, filgrastim, fluconazole, fludarabine, fluorouracil, foscarnet, furosemide, gemcitabine, gentamicin, glycopyrrolate, granisetron, hydrocortisone, HYDROmorphone, IDArubicin, ifosfamide, IL-2, imipenem/cilastin, isoproterenol, ketorolac, labetalol, levofloxacin, lidocaine, linezolid, LORazepam, magnesium sulfate, mannitol, mechlorethamine, melphalan, meperidine, metaraminol, methotrexate, methoxamine, methyldopate, methylPREDNISolone, metoclopramide, metoprolol, metroNIDAZOLE, midazolam, milrinone, mitoXANtrone, morphine, multivitamins, nafcillin, nalbuphine, naloxone, niCARdipine, nitroglycerin, nitroprusside, norepinephrine, octreotide, ondansetron, oxaliplatin, oxytocin, PACLitaxel, palonosetron, pantoprazole, papaverine, PEMEtrexed, penicillin G, pentazocine, perphenazine, PHENobarbital, phenylephrine, phytonadione, piperacillin/tazobactam, potassium chloride, procainamide, prochlorperazine, promethazine, propranolol, protamine, pyridoxime, quinupristin/dalfopristin, rantidine, remifentanil, riTUXimab, rocuromium, sargramostim, sodium acetate, sodium bicarbonate, succinylcholine, SUFentanil, tacrolimus, teniposide, theophylline, thiamine, thiotepa, ticarcillin/clavulanate, tigecycline, tirofiban, tobramycin, tolazoline, trimethaphan, urokinase, vancomycin, vasopressin, vecuronium, verapamil, vinCRIStine, vinorelbine, voriconazole, warfarin, zidovudine

SIDE EFFECTS

CNS:
Confusion, depression, numbness, tremors,
seizures,
muscle twitching,
neurotoxicity,
dizziness, vertigo, tinnitus,
neuromuscular blockade with respiratory paralysis

CV:
Hypo/hypertension, palpitations

EENT:
Ototoxicity
, deafness, visual disturbances

GI:
Nausea, vomiting, anorexia;
increased ALT, AST, bilirubin; hepatomegaly,
hepatic necrosis,
splenomegaly

GU:
Oliguria, hematuria, renal damage, azotemia, renal failure, nephrotoxicity

HEMA:
Agranulocytosis, thrombocytopenia, leukopenia, eosinophilia, anemia

INTEG:
Rash
, burning, urticaria, dermatitis, alopecia

PHARMACOKINETICS

IM:
Onset rapid, peak 1-2 hr, leads to unpredictable concentrations, IV preferred

IV:
Onset immediate, peak 15-30 min; half-life 2-3 hr, prolonged up to 7 hr in infants; not metabolized; excreted unchanged in urine; crosses placenta; removed by hemodialysis

INTERACTIONS

• 
Mask ototoxicity: dimenhyDRINATE, ethacrynic acid

Increase:
serum trough and peak—NSAIDs

Increase:
nephrotoxicity—cephalosporins, acyclovir, vancomycin, amphotericin B, cycloSPORINE, loop diuretics, cidofovir

Increase:
neuromuscular blockade, respiratory depression—anesthetics, nondepolarizing neuromuscular blockers

Drug/Lab Test

Increase:
BUN, creatinine

NURSING CONSIDERATIONS
Assess:

• 
Weight before treatment; calculation of dosage is usually based on ideal body weight but may be calculated on actual body weight

• 
I&O ratio; urinalysis daily for proteinuria, cells, casts; report sudden change in urine output

• 
VS during infusion; watch for hypotension, change in pulse

• 
IV site for thrombophlebitis including pain, redness, swelling q30min; change site if needed; apply warm compresses to discontinued site

 

Black Box Warning:

Renal impairment by securing urine for CCr, BUN, serum creatinine; lower dosage should be given with renal impairment; nephrotoxicity may be reversible if product stopped at 1st sign

 

Black Box Warning:

Deafness: audiometric testing, ringing, roaring in ears, vertigo; assess hearing before, during, after treatment

• 
Dehydration: high specific gravity, decrease in skin turgor, dry mucous membranes, dark urine

• 
Overgrowth of infection: increased temp, malaise, redness, pain, swelling, perineal itching, diarrhea, stomatitis, change in cough, sputum

• 
Vestibular dysfunction: nausea, vomiting, dizziness, headache; product should be discontinued if severe

 

Black Box Warning:

Neuromuscular blockade; respiratory paralysis may occur

Perform/provide:

• 
Adequate fluids of 2-3 L/day, unless contraindicated, to prevent irritation of tubules

Evaluate:

• 
Therapeutic response: absence of fever, draining wounds, negative C&S after treatment

Teach patient/family:

• 
To report headache, dizziness, symptoms of overgrowth of infection, renal impairment; symptoms of neurotoxicity, hepatotoxicity

 
To report loss of hearing; ringing, roaring in ears; feeling of fullness in head

• 
To report hypersensitivity: rash, itching, trouble breathing, facial edema; notify health care provider

TREATMENT OF HYPERSENSITIVITY:

Hemodialysis, exchange transfusion in the newborn, monitor serum levels of product, may give ticarcillin or carbenicillin

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