Mosby's 2014 Nursing Drug Reference (200 page)

ACTION:

Inhibitor of pituitary gonadotropin secretion; initially increases LH and FSH, with increases in testoster
one, reduction in sex steroid levels (substitute serum testosterone levels)

USES:

Advanced and locally confined prostate cancer stage B2-C (10.8 mg), endometriosis, advanced breast cancer, endometrial thinning (3.6 mg)

CONTRAINDICATIONS:

Hypersensitivity; pregnancy D (breast cancer), X (endometriosis); breastfeeding, children, nondiagnosed vaginal bleeding; hypersensitivity to LHRH, LHRH-agonist analogs; 10.8 mg dose contraindicated in women

Precautions:
Spinal cord decompression, renal disease, bone mineral density loss, hyperglycemia, diabetes mellitus, CV disease

DOSAGE AND ROUTES
Calculator
Breast cancer

• Adult:
SUBCUT
3.6 mg q28days or 10.8 mg q12wk

Endometrial thinning

• Adult:
SUBCUT
3.6 mg 1-2 depot inj, usually 1 depot, surgery performed at 4 wk; if 2 depots, surgery performed 2-4 wk after 2nd depot

Available forms:
Depot inj 3.6, 10.8 mg

Administer:
Depot

• 
SUBCUT using implant, inserted by qualified person into upper subcutaneous tissue in abdominal wall q28days or q12wk (10.8 mg); do not attempt to remove air bubbles from syringe

SIDE EFFECTS

CNS:
Headaches
,
spinal cord compression,
anxiety, depression, dizziness, insomnia, lethargy
, hot flashes, emotional lability

CV:
Dysrhythmia, cerebrovascular accident,
hypertension, chest pain,
CHF;
MI, sudden cardiac death, stroke (men),
peripheral edema

ENDO:
Gynecomastia, breast tenderness, breast enlargement,
hot flashes;
hyperglycemia, diabetes (men)

GI:
Nausea
, vomiting, constipation, diarrhea, ulcer

GU:
Spotting, breakthrough bleeding, decreased libido
, renal insufficiency, urinary obstruction, urinary tract infection,
impotence

INTEG:
Rash, pain on inj, diaphoresis

MS:
Osteoneuralgia

RESP:
COPD, URI

PHARMACOKINETICS

Peak 12-15 days, half-life 4½ hr, 30% protein bound

INTERACTIONS
Drug/Lab Test

Increase:
alk phos, estradiol, FSH, LH, testosterone levels, triglycerides

Decrease:
testosterone levels, progesterone

NURSING CONSIDERATIONS
Assess:

• 
Reproductive studies:
pelvic ultrasound, pelvic exam, PSA, serum estradiol/testosterone, pregnancy test prior to therapy

• 
I&O ratios; palpate bladder for distention in urinary obstruction

• 
Cancer metastases:
for relief of bone pain (back pain), change in motor function

• 
Blood studies: lipid profile, acid phosphatase; calcium; hypercalcemia may occur

Evaluate:

• 
Therapeutic response: more normal levels of PSA, acid phosphatase, alk phos; testosterone level of <25 ng/dl; thinning of endometrial lining

Teach patient/family:

• 
To continue with appointments monthly

• 
That hyperglycemia may occur in diabetic patients

• 
That gynecomastia and postmenopausal symptoms may occur but will decrease when treatment is discontinued

• 
That bone pain may increase then decrease

• 
To notify prescriber of difficulty urinating, hot flashes

• 
Not to breastfeed; to use effective nonhormonal contraception; to notify prescriber if menstrual period continues

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

granisetron (Rx)

(grane-iss′e-tron)

Granisol, Kytril, Sancuso

Func. class.:
Antiemetic

Chem. class.:
5-HT
3
receptor antagonist

ACTION:

Prevents nausea, vomiting by blocking serotonin peripherally, centrally, and in the small intestine

USES:

Prevention of nausea, vomiting associated with cancer chemotherapy, including high-dose CISplatin, radiation

Unlabeled uses:
Acute nausea, vomiting after surgery

CONTRAINDICATIONS:

Hypersensitivity to this product, benzyl alcohol

Precautions:
Pregnancy (B), breastfeeding, children, geriatric patients, ondansetron/palonosetron/dolasetron hypersensitivity, cardiac dysrhythmias, cardiac/hepatic disease, electrolyte imbalances

DOSAGE AND ROUTES
Calculator
Nausea, vomiting in chemotherapy

• Adult and child ≥2 yr:
IV
10 mcg/kg over 5 min, 30 min before the start of cancer chemotherapy;
TD
apply 1 patch (3.1 mg/24 hr) to upper outer arm 24-48 hr before chemotherapy, patch may be worn up to 7 days

• Adult:
PO
1 mg bid, give 1st dose 1 hr before chemotherapy and next dose 12 hr after 1st or 2 mg as a single dose anytime within 1 hr prior to chemotherapy

Nausea, vomiting in radiation therapy

• Adult:
PO
2 mg/day 1 hr before radiation

Available forms:
Inj 1 mg/ml; tab 1 mg; oral sol 2 mg/10 ml; patch TD 3.1 mg/24 hr

Administer:

• 
Chemotherapy/radiation: given on day of chemotherapy or radiation

PO route

• 
Give dose 1 hr before chemotherapy/radiation and another 12 hr after 1st dose

Direct IV route

• 
May give undiluted over 30 sec via
Y
-site

Intermittent IV INF route

• 
Dilute in 0.9% NaCl for inj or D
5
W (20-50 ml); give over 5-15 min 30 min before chemotherapy

Additive compatibilities:
Dexamethasone, methylPREDNISolone

Solution compatibilities:
D
5
W, 0.9% NaCl

Y-site compatibilities:
Acyclovir, allopurinol, amifostine, amikacin, aminophylline, amphotericin B cholesteryl, ampicillin, ampicillin/sulbactam, amsacrine, aztreonam, bleomycin, bumetanide, buprenorphine, butorphanol, calcium gluconate, CARBOplatin, carmustine, ceFAZolin, cefepime, cefonicid, cefoperazone, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, cefTRIAXone, cefuroxime, chlorproMAZINE, cimetidine, ciprofloxacin, CISplatin, cladribine, clindamycin, cyclophosphamide, cytarabine, dacarbazine, DACTINomycin, DAUNOrubicin, dexamethasone, diphenhydrAMINE, DOBUTamine, DOPamine, DOXOrubicin, DOXOrubicin liposome, doxycycline, droperidol, enalaprilat, etoposide, famotidine, filgrastim, fluconazole, fluorouracil, floxuridine, fludarabine, furosemide, gallium, ganciclovir, gentamicin,
haloperidol, heparin hydrocortisone, HYDROmorphone, hydrOXYzine, IDArubicin, ifosfamide, imipenem-cilastatin, leucovorin, LORazepam, magnesium sulfate, melphalan, meperidine, mesna, methotrexate, methylPREDNISolone, metoclopramide, metroNIDAZOLE, mezlocillin, miconazole, minocycline, mitoMYcin, mitoXANtrone, morphine, nalbuphine, netilmicin, ofloxacin, PACLitaxel, piperacillin, piperacillin/tazobactam, plicamycin, potassium chloride, prochlorperazine, promethazine, propofol, ranitidine, sargramostim, sodium bicarbonate, streptozocin, teniposide, thiotepa, ticarcillin, ticarcillin/clavulanate, tobramycin, trimethoprim-sulfamethoxazole, vancomycin, vinBLAStine, vinCRIStine, vinorelbine, zidovudine

Transdermal route

• 
Apply to dry, clean, intact skin of upper outer arm 24-48 hr before chemotherapy, firmly press on skin, keep on during chemotherapy; can bathe, avoid swimming, whirlpool; remove ≥24 hr after chemotherapy completion, do not cut patch

SIDE EFFECTS

CNS:
Headache, asthenia
, anxiety, dizziness

CV:
Hypertension,
QT prolongation

GI:
Diarrhea,
constipation
, increased AST, ALT,
nausea

HEMA:
Leukopenia,
anemia,
thrombocytopenia

MISC:
Rash,
bronchospasm

PHARMACOKINETICS

Metabolized in liver to an active metabolite, half-life 10-12 hr, protein binding 65%

INTERACTIONS

Increase:
EPS—antipsychotics

Increase:
QT prolongation—amoxapine, β-blockers, chloroquine, class IA, III antidysrhythmics, clozapine, dasatinib, dolasetron, dronedarone, droperidol, erythromycin, flecainide, halogenated/local anesthetics, haloperidol, lapatinib, maprotiline, methadone, octreotide, ondansetron, palonosetron, pentamidine, phenothiazines, pimozide, propafenone, ranolazine, risperiDONE, sertindole, SUNItinib, tacrolimus, telithromycin, tricyclics, troleandomycin, vardenafil, vorinostat, ziprasidone

NURSING CONSIDERATIONS
Assess:

• 
For absence of nausea, vomiting during chemotherapy

• 
Hypersensitivity reaction:
rash, bronchospasm

Perform/provide:

• 
Storage at room temp for 24 hr after dilution

Evaluate:

• 
Therapeutic response: absence of nausea, vomiting during cancer chemotherapy

Teach patient/family:

• 
To report diarrhea, constipation, rash, changes in respirations

• 
That headache requiring an analgesic is common

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

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