Mosby's 2014 Nursing Drug Reference (345 page)

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

ranibizumab (Rx)

(ran-ih-biz′oo-mab)

Lucentis

Func. class.:
Ophthalmic

Chem. class.:
Selective vascular endothelial growth factor antagonist

ACTION:

Binds to receptor-binding site of active forms of vascular endothelial growth factor A (VEGF-A) that causes angiogenesis and cell proliferation

USES:

Macular degeneration (neovascular) (wet), macular edema after retinal vein occlusion (RVO), diabetic macular edema

CONTRAINDICATIONS:

Hypersensitivity, ocular infections

Precautions:
Pregnancy (C), breastfeeding, children, retinal detachment, increased intraocular pressure

DOSAGE AND ROUTES
Calculator
Macular degeneration/macular edema after retinal vein occlusion (RVO)

• Adult:
INTRAVITREAL
0.5 mg (0.05 ml) monthly

Diabetic macular edema

• Adults:
INTRAVITREAL
0.5 mg then prompt (within 1 wk) or deferred (≥24 wk) laser

Available forms:
Sol for inj 0.5 mg/0.05 ml

Administer:

• 
By ophthalmologist via intravitreal injection using adequate anesthesia; use 19-gauge filter

SIDE EFFECTS

CNS:
Dizziness, headache

EENT:
Blepharitis, cataract, conjunctival hemorrhage/hyperemia, detachment of retinal pigment epithelium, dry/irritation/pain in eye, visual impairment, vitreous floaters, ocular infection

GI:
Constipation, nausea

MISC:
Hypertension, UTI,
thromboembolism, nonocular bleeding

RESP:
Bronchitis, cough, sinusitis, URI

PHARMACOKINETICS

Elimination half-life 9 days

INTERACTIONS

Increase:
severe inflammation—verteporfin photodynamic therapy (PDT)

NURSING CONSIDERATIONS
Assess:

• 
Eye changes:
redness; sensitivity to light, vision change; increased intraocular pressure change; report infection to ophthalmologist immediately

Perform/provide:

• 
Storage in refrigerator; do not freeze

• 
Protect from light

Evaluate:

• 
Therapeutic response: prevention of increasing macular degeneration

Teach patient/family:

• That, if eye becomes red, sensitive to light, painful, or if there is a change in vision, to seek immediate care from ophthalmologist

• 
About reason for treatment, expected results

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

ranitidine (Rx,
OTC
)

(ra-nit′i-deen)

Equaline Heartburn Relief, Nu-Ranit
, Top Care Heartburn Relief, Wal-zan, Zantac, Zantac C

ranitidine bismuth
citrate

Tritec

Func. class.:
H
2
-Histamine receptor antagonist

Do not confuse:
ranitidine
/amantadine/rimantadine
Zantac
/Xanax/Zofran/ZyrTEC

ACTION:

Inhibits histamine at H
2
-receptor site in parietal cells, which inhibits gastric acid secretion

USES:

Duodenal ulcer, Zollinger-Ellison syndrome, gastric ulcers, hypersecretory conditions, gastroesophageal reflux disease, stress ulcers, erosive esophagitis (maintenance), active duodenal ulcers with
Helicobacter pylori
in combination with clarithromycin, systemic mastocytosis, multiple endocrine adenoma syndrome, heartburn

Unlabeled uses:
Prevention of aspiration pneumonitis, upper GI bleeding, angioedema, gastritis, urticaria, NSAID-induced ulcer prophylaxis

CONTRAINDICATIONS:

Hypersensitivity

Precautions:
Pregnancy (B), breastfeeding, child <12 yr, renal/hepatic disease

DOSAGE AND ROUTES
Calculator
Ranitidine
Duodenal ulcer

• Adult:
PO
150 mg bid or 300 mg/day after
PM
meal or at bedtime; maintenance 150 mg at bedtime

• Infant and child:
PO
2-4 mg/kg bid, max 300 mg/day

Zollinger-Ellison syndrome

• Adult:
PO
150 mg bid, may increase if needed

Gastric ulcer

• Adult:
PO
150 mg bid × 6 wk then 150 mg at bedtime

• Infant and child:
PO
2-4 mg/kg bid, max 300 mg/day

GERD

• Adult:
PO
150 mg bid

Erosive esophagitis

• Adult:
PO
150 mg qid for up to 12 wk

• Child ≥1 mo:
PO
5-10 mg/kg/day in 2-3 divided doses

Renal dose

• Adult:
CCr <50 ml/min, give 50% of dose or extend dosing interval

NSAID-induced ulcer prophylaxis (unlabeled)

• Adult:
PO
150 mg bid

Stress gastritis prophylaxis (unlabeled)

• Adult:
IM/INT IV INF
50 mg q6-8hr

Severe, acute urticaria/angioedema (unlabeled)

• Adult:
INT IV INF
50 mg with H
1
-blocker

Ranitidine bismuth citrate

• Adult:
PO
400 mg bid × 4 wk with clarithromycin 500 mg tid × 1st 2 wk

Available forms:
Ranitidine:
tabs 75, 150, 300 mg; sol for inj 25 mg/ml; caps 150, 300 mg; syr 15 mg/ml;
ranitidine bismuth citrate:
tabs 400 mg

Administer:
PO route

• 
Antacids 1 hr before or 1 hr after ranitidine

• 
Without regard to meals;
EFFERdose tab:
dissolve 25 mg/≥5 ml, give after dissolved; swallow whole or dissolve on tongue, do not chew

IM route

• 
No dilution needed; inject in large muscle mass, aspirate

Direct IV route

• 
Dilute to max 2.5 mg/ml (50 mg/20 ml) using 0.9% NaCl (nonpreserved) or D
5
W, give dose over ≥5 min (max 4 mg/ml)

Intermittent IV INF route

• 
Dilute to max 0.5 mg/ml with D
5
W, NS, give over 15-20 min (5-7 ml/min); premixed ready-to-use bags as 1 mg/ml (50 mg/50 ml), inf over 15-20 min

Continuous 24 hr IV INF route

• dilute 150 mg/250 ml of D
Adult:
5
W or NS, run over 24 hr (6.25 mg/hr or as directed); use inf device, use within 48 hr;
Zollinger-Ellison Syndrome:
dilute in D
5
W, NS; max conc 2.5 mg/ml, use inf device

Y-site:
Acyclovir, aldesleukin, alemtuzumab, alfentanil, allopurinol, amifostine, amikacin, aminophylline, amphotericin B liposome, amsacrine, anikinra, anidulafungin, ascorbic acid, atracurium, atropine, aztreonam, bivalirudin, bumetanide, buprenorphine, butorphanol, calcium chloride/gluconate, CARBOplatin, ceFAZolin, cefepime, cefonicid, cefoperazone, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, chloramphenicol, chlorproMAZINE, cimetidine, ciprofloxacin, cisatracurium, CISplatin, clindamycin, cyanocobalamin, cyclophosphamide, cycloSPORINE, cytarabine, DACTINomycin, DAPTOmycin, dexamethasone, dexmedetomidine, digoxin, diltiazem, DOBUTamine, DOCEtaxel, DOPamine, doripenem, doxacurium, doxapram, DOXOrubicin, DOXOrubicin liposome, doxycycline, enalaprilat, ePHEDrine, EPINEPHrine, epirubicin, epoetin alfa, ertapenem, erythromycin, esmolol, etoposide, etoposide phosphate, famotidine, fenoldopam, fentaNYL, filgrastim, fluconazole, fludarabine, fluorouracil, folic acid, foscarnet, furosemide, ganciclovir, gemcitabine, gentamicin, glycopyrrolate, granisetron, heparin, hydrocortisone, HYDROmorphone, IDArubicin, ifosfamide, imipenem/cilastatin, inamrinone, indomethacin, 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, multivitamin, nalbuphine, naloxone, nesiritide, niCARdipine, nitroglycerin, nitroprusside, norepinephrine, octreotide, ondansetron, oxacillin, oxaliplatin, oxytocin, PACLitaxel, palonosetron, pancuronium, papaverine, PEMEtrexed, penicillin G, pentamidine, pentazocine, PENTobarbital, PHENobarbital, phentolamine, phenylephrine, phytonadione, piperacillin/tazobactam, potassium chloride, procainamide, prochlorperazine, promethazine, propofol, propranolol, protamine, pyrdoxime, remifentanil, riTUXimab, rocuronium, sargramostim, sodium
acetate/bicarbonate, succinylcholine, SUFentanil, tacrolimus, teniposide, theophylline, thiamine, thiopental, thiotepa, ticarcillin/clavulanate, tigecycline, tirofiban, tobramycin, tolazoline, trastuzumab, trimethaphan, urokinase, vancomycin, vecuronium, vinCRIStine, vinorelbine, warfarin, zidovudine, zoledronic acid

SIDE EFFECTS

CNS:
Headache, sleeplessness, dizziness, confusion, agitation, depression, hallucination (geriatric patients)

CV:
Tachycardia, bradycardia, PVCs

EENT:
Blurred vision, increased ocular pressure

GI:
Constipation, abdominal pain, diarrhea, nausea, vomiting,
hepatotoxicity

GU:
Impotence,
acute interstitial nephritis (rare)

INTEG:
Urticaria, rash, fever

RESP:
Pneumonia

SYST:
Anaphylaxis (rare)

PHARMACOKINETICS

PO:
Peak 2-3 hr; duration 8-12 hr; metabolized by liver; excreted in urine (30% unchanged, PO), breast milk; half-life 2-3 hr; protein binding 15%

INTERACTIONS

Increase:
effect of pramipexole, procainamide, trospium, triazolam, calcium channel blockers, memantine, saquinavir, adefovir

 
Increase:
GI obstruction risk—NIFEdipine ext rel products

Increase:
toxicity—sulfonylureas, procainamide, benzodiazepines, calcium channel blockers

Decrease:
absorption of ranitidine—antacids, anticholinergics

Decrease:
effects of cephalosporins, iron salts, ketoconazole, itraconazole

Increase:
GI obstruction risk—NIFEdipine ext rel products

Drug/Lab Test

Increase:
AST, ALT, creatinine

False positive:
urine protein (Multistix)

NURSING CONSIDERATIONS
Assess:

• 
GI complaints:
nausea, vomiting, diarrhea, cramps, abdominal discomfort, jaundice; report immediately

• 
I&O ratio, BUN, creatinine, LFTs, serum, stool guaiac before, periodically during therapy

Perform/provide:

• 
Storage at room temp

Evaluate:

• 
Therapeutic response: decreased abdominal pain, heartburn

Teach patient/family:

• 
To avoid driving, other hazardous activities until stabilized on product

• 
That product must be continued for prescribed time to be effective

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

• 
Not to take maximum OTC daily dose for >2 wk

• 
To take once daily dose before bedtime

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