Mosby's 2014 Nursing Drug Reference (295 page)

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

HIGH ALERT
norepinephrine (Rx)

(nor-ep-i-nef′rin)

Levophed

Func. class.:
Adrenergic

Chem. class.:
Catecholamine

Do not confuse:
norepinephrine
/EPINEPHrine

ACTION:

Causes increased contractility and heart rate by acting on β-receptors in heart; also acts on α-receptors, thereby causing vasoconstriction in blood vessels; B/P is elevated, coronary blood flow improves, and cardiac output increases

USES:

Acute hypotension, shock

CONTRAINDICATIONS:

Hypersensitivity to this product or cyclopropane/halothane anesthesia, sulfites; ventricular fibrillation, tachydysrhythmias, pheochromocytoma, hypotension, hypovolemia

Precautions:
Pregnancy (C), breastfeeding, geriatric patients, arterial embolism, peripheral vascular disease, hy-pertension, hyperthyroidism, cardiac disease

 

Black Box Warning:

Extravasation

DOSAGE AND ROUTES
Calculator

• Adult:
IV INF
0.5-1 mcg/min titrated to B/P; maintenance 2-4 mcg/min; max 30 mcg/min

• Child:
IV INF
0.1-0.2 mcg/kg/min titrated to B/P; max 2 mcg/kg/min

Available forms:
Inj 1 mg/ml

Administer:

• 
Plasma expanders for hypovolemia

Continuous IV INF route

• 
Dilute with 500-1000 ml D
5
W or D
5
/0.9% NaCl; average dilution 4 mg/1000 ml diluent (4 mcg base/ml); give as inf 2-3 ml/min; titrate to response

Y-site compatibilities:
Alfentanil, amikacin, amiodarone, anidulafungin, argatroban, ascorbic acid, atenolol, atracurium, atropine, aztreonam, benztropine, bivalirudin, bleomycin, bumetanide, buprenorphine, butorphanol, calcium chloride/gluconate, CARBOplatin, caspofungin, cefamandole, ceFAZolin, cefmetazole, cefonicid, cefoperazone, cefotaxime, cefoTEtan, cefOXitin, cefTAZidime, ceftizoxime, ceftobiprole, cefTRIAXone, cefuroxime, cephalothin, chloramphenicol, chlorproMAZINE, cimetidine, cisatracurium, CISplatin, clindamycin, cloNIDine, cyanocobalamin, cyclophosphamide, cycloSPORINE, cytarabine, DAPTOmycin, dexamethasone, digoxin, diltiazem, diphenhydrAMINE, DOBUTamine, DOCEtaxel, DOPamine, doripenem, doxycycline, enalaprilat, ePHEDrine, EPINEPHrine, epirubicin, epoetin alfa, ertapenem, erythromycin, esmolol, etoposide, famotidine, fenoldopam, fentaNYL, fluconazole, fludarabine, gatifloxacin, gemcitabine, gentamicin, glycopyrrolate, granisetron, heparin, hydrocortisone, HYDROmorphone, hydrOXYzine, IDArubicin, ifosfamide, imipenem-cilastatin, irinotecan, isoproterenol, ketorolac, labetalol, lidocaine, linezolid, LORazepam, magnesium sulfate, mannitol, mechlorethamine, meperidine, meropenem, metaraminol, methicillin, methotrexate, methoxamine, methyldopate, methylPREDNISolone, metoclopramide, metoprolol, metroNIDAZOLE, mezlocillin, micafungin, miconazole, midazolam, milrinone, minocycline, mitoXANtrone, morphine, moxalactam, multiple vitamins injection, mycophenolate, nafcillin, nalbuphine, naloxone, netilmicin, niCARdipine, nitroglycerin, nitroprusside, octreotide, ondansetron, oxacillin, oxaliplatin, oxytocin, PACLitaxel, palonosetron, pamidronate, pancuronium, papaverine, PEMEtrexed, penicillin G potassium/sodium, pentamidine, pentazocine, phenylephrine, phytonadione, piperacillin, piperacillin-tazobactam, polymyxin B, potassium chloride, procainamide, prochlorperazine, promethazine, propofol, propranolol, protamine, pyridoxine, quiNIDine, ranitidine, remifentanil, ritodrine, succinylcholine, SUFentanil, tacrolimus, teniposide, theophylline, thiamine, thiotepa, ticarcillin, ticarcillin-clavulanate, tigecycline, tirofiban, tobramycin, tolazoline, trimetaphan, urokinase, vancomycin, vasopressin, vecuronium, verapamil, vinCRIStine, vinorelbine, vitamin B complex with C, voriconazole, zoledronic acid

SIDE EFFECTS

CNS:
Headache
, anxiety, dizziness, insomnia, restlessness, tremor,
cerebral hemorrhage

CV:
Palpitations, tachycardia, hypertension, ectopic beats, angina

GI:
Nausea, vomiting

GU:
Decreased urine output

INTEG:
Necrosis, tissue sloughing with extravasation, gangrene

RESP:
Dyspnea

SYST:
Anaphylaxis

PHARMACOKINETICS

IV:
Onset 1-2 min; metabolized in liver; excreted in urine (inactive metabolites); crosses placenta

INTERACTIONS

Increase:
dysrhythmias—general anesthetics

• 
Incompatible with alkaline solutions: sodium, bicarbonate

• 
Severe hypertension: guanethidine

 
Do not use within 2 wk of MAOIs, antihistamines, ergots, methyldopa, oxytocics, tricyclics, guanethidine because hypertensive crisis may result

Increase:
B/P—oxytocics

Increase:
pressor effect—tricyclics, MAOIs

Decrease:
norepinephrine action—α-blockers

NURSING CONSIDERATIONS
Assess:

• 
I&O ratio; notify prescriber if output <30 ml/hr

• 
B/P, pulse q2-3min after parenteral route, ECG during administration continuously; if B/P increases, product is decreased, CVP or PWP during inf if possible

• 
Paresthesias and coldness of extremities; peripheral blood flow may decrease

 

Black Box Warning:

Extravasation:
inj site: tissue sloughing

• 
Sulfite sensitivity, which may be life-threatening

Perform/provide:

• 
Storage of reconstituted sol in refrigerator ≤24 hr, protect from light, store unopened product at room temp, do not use discolored sol

Evaluate:

• 
Therapeutic response: increased B/P with stabilization, adequate tissue perfusion

Teach patient/family:

• 
About the reason for product administration; to report dyspnea, dizziness, chest pain

TREATMENT OF OVERDOSE:

Administer fluids, electrolyte replacement

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

norethindrone (Rx)

(nor-eth-in′drone)

Aygestin, Camila, Errin
, Heather, Jolivette, Micronor, Nora-BE, Nor-QD, Ortho Micronor

Func. class.:
Progestogen

ACTION:

Inhibits the secretion of pituitary gonadotropins, which prevents follicular maturation and ovulation; stimulates growth of mammary tissue; antineoplastic action against endometrial cancer

USES:

Uterine bleeding (abnormal), amenorrhea, endometriosis, contraception

CONTRAINDICATIONS:

Pregnancy (X), breast cancer, hypersensitivity, thromboembolic disorders, reproductive cancer, genital bleeding (abnormal, undiagnosed), liver tumors, hepatic disease

Precautions:
Breastfeeding, hypertension, asthma, blood dyscrasias, CHF, diabetes mellitus, depression, migraine headache, seizure disorders, bone/gallbladder/renal/hepatic disease, family history of breast or reproductive tract cancer, smoking, HIV

DOSAGE AND ROUTES
Calculator
Amenorrhea, abnormal uterine bleeding (Aygestin)

• Adult:
PO
2.5-10 mg/day on days 5-25 of menstrual cycle

Endometriosis (Aygestin)

• Adult:
PO
5 mg/day × 2 wk then increased by 2.5 mg/day × 2 wk up to 15 mg/day, may continue for 6-9 mo

Contraception

• Adult:
PO
0.35 mg on 1st day of menses then 0.35 mg/day

Available forms:
Tabs (Aygestin) 5 mg; tabs 0.35 mg

Administer:

• 
Titrated dose; use lowest effective dose

• 
One dose in
AM
; do not interrupt between pill packs, give at roughly same time of day

• 
Without regard to meals

SIDE EFFECTS

CNS:
Dizziness, headache
, migraines, depression, fatigue

CV:
Hypotension,
thrombophlebitis,
edema,
thromboembolism, CVA, stroke, PE, MI

EENT:
Diplopia

GI:
Nausea
, vomiting, anorexia, cramps, increased weight,
cholestatic jaundice

GU:
Amenorrhea, cervical erosion, breakthrough bleeding, dysmenorrhea, vaginal candidiasis, breast changes, (gynecomastia, testicular atrophy, impotence), endometriosis,
spontaneous abortion,
breast tenderness

INTEG:
Rash, urticaria, acne, hirsutism, alopecia, oily skin, seborrhea, purpura, melasma

META:
Hyperglycemia

PHARMACOKINETICS

Duration 24 hr, excreted in urine, feces; metabolized in liver

INTERACTIONS

Decrease:
progestin effect—barbiturates, carBAMazepine, fosphenytoin, phenytoin, rifampin

Drug/Herb

Decrease:
contraception—St. John’s wort

Drug/Food

Increase:
caffeine level—caffeine

Drug/Lab Test

Increase:
LDL

Decrease:
GTT, HDL, alk phos

NURSING CONSIDERATIONS
Assess:

• 
Weight daily: notify prescriber of weekly weight gain >5 lb

• 
B/P at beginning of treatment and periodically

• 
I&O ratio; be alert for decreasing urinary output, increasing edema

• 
Hepatic studies: ALT, AST, bilirubin periodically during long-term therapy

• 
Edema, hypertension, cardiac symptoms, jaundice, thromboembolism

• 
Mental status: affect, mood, behavioral changes, depression

• 
Hypercalcemia

• 
Breast exam, pap smear

Perform/provide:

• 
Storage in dark area

Evaluate:

• 
Therapeutic response: decreased abnormal uterine bleeding, absence of amenorrhea

Teach patient/family:

• 
About cushingoid symptoms

 
To report breast lumps, vaginal bleeding, amenorrhea, edema, jaundice, dark urine, clay-colored stools, dyspnea, headache, blurred vision, abdominal pain, numbness or stiffness in legs, chest pain; impotence or gynecomastia (men)

• 
To take at same time of day; not to interrupt between pill packs

• 
To report suspected pregnancy immediately, to wait ≥3 mo after stopping product to become pregnant, (X), use backup contraception methods for 48 hr, if treatment is not begun on the first day of menstruation

• 
To avoid smoking; CV reactions may occur

• 
That product does not protect against HIV, STDs

• 
That product may mask onset of menopause

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