Mosby's 2014 Nursing Drug Reference (438 page)

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

tbo-filgrastim

(fil-gras′tim)

Neutrophil

Func. class.:
Biologic modifier

Chem. class.:
Short-acting granulocyte colony-stimulating factor (G-CSF)

ACTION:

Stimulates proliferation and differentiation of neutrophils by binding to G-CSF receptors

USES:

Chemotherapy-induced neutropenia prophylaxis to reduce the duration of severe neutropenia in nonmyeloid malignancies

CONTRAINDICATIONS:

Hypersensitivity

Precautions:
pregnancy (C), breastfeeding, children, sickle cell disease, chemotherapy, neoplastic disease

DOSAGE AND ROUTES
Calculator

• Adult:
SUBCUT
5 mcg/kg/day

Available forms:
Solution for injection 300 mcg/0.5 ml, 480 mcg/0.8 ml

Administer:
SUBCUT route

• 
Visually inspect for particulate matter and discoloration before use, the solution should be clear; do not shake

• 
Injection sites include the front of the middle thighs, the upper outer areas of the buttocks, the upper back portion of the upper arms, or the abdomen except for the 2 inches around the navel; vary sites daily

• 
After removing the needle shield, expel unneeded volume based on the needed dose, discard unused portions

• 
Inject SUBCUT, avoiding any area that is tender, red, bruised, or hard or that has stretch marks or scars; push the plunger as far as it will go, because injection of the entire contents is necessary to activate the needle guard

• 
Remove needle from skin while keeping plunger depressed; slowly let the plunger go to allow the empty syringe to move inside the device and guard the needle

SIDE EFFECTS

CNS:
Fever, headache

GI:
Nausea, vomiting, diarrhea, anorexia, abdominal pain

HEMA:
Excessive leukocytosis

INTEG:
Alopecia

RESP:
Acute respiratory distress syndrome (ARDS)

SYST:
Anaphylaxis, angioedema, sickle-cell crisis, splenic rupture

PHARMACOKINETICS

Half-life 3.2-3.8 hr

INTERACTIONS

Increase:
adverse reactions—do not use this product concomitantly with antineoplastics, lithium

NURSING CONSIDERATIONS
Assess:

• 
Blood studies: CBC, platelet count before treatment and twice weekly; neutrophil counts may be increased for 2 days after therapy

• 
B/P, respirations, pulse before and during therapy

• 
Bone pain; give mild analgesics

Evaluate:

• 
Absence of severe neutropenia in cancer chemotherapy

Teach patient/family:

• 
About the technique for self-administration: dose, side effects, disposal of containers and needles; provide instruction sheet

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

teriflunomide

(ter′i-floo′noe-mide)

Aubagio

Func. class.:
Multiple sclerosis agent

Chem. class.:
Pyrimidine synthesis inhibitor

ACTION:

Antiproliferative effects including peripheral T- and B-lymphocytes, might reduce inflammatory demyelination

USES:

Reduction of the frequency of relapses or remitting MS

CONTRAINDICATIONS:

Hypersensitivity

 

Black Box Warning:

Pregnancy: X

Precautions:
Breastfeeding, alcoholism, diabetes mellitus, eosinophilic pneumonia, hepatitis, jaundice, male-mediated teratogenicity, pneumonitis, pulmonary disease/fibrosis, sarcoidosis, TB, vaccination

 

Black Box Warning:

Hepatic disease

DOSAGE AND ROUTES
Calculator

• Adult:
PO
7 or 14 mg/day

Available forms:
Tabs 7, 14 mg

Administer:
PO route

• 
May be taken without regard to food

SIDE EFFECTS

CNS:
Anxiety, headache

CV:
Palpitations, hypertension,
MI

EENT:
Blurred vision, conjunctivitis, sinusitis

GI:
Nausea, vomiting, diarrhea, cystitis

HEMA:
Leukopenia, lymphopenia, neutropenia

INTEG:
Acne vulgaris, alopecia, pruritus

META:
Weight loss

MISC:
Infection, cystitis

PHARMACOKINETICS

Protein binding >99%, median half-life 18-19 days, peak 1-4 hr

INTERACTIONS

• 
Do not use with leflunomide, live virus vaccines

Increase:
teriflunomide effect—cycloSPORINE, eltrombopag, gefitinib

Increase:
hepatotoxicity—methotrexate, HMG-CoA reductase inhibitors

Increase:
hematologic toxicity—zidovudine

Increase:
effect of—oral contraceptives, repaglinide, pioglitazone, rosiglitazone, PACLitaxel, naproxen, topotecan, bosentan, furosemide

Decrease:
effect of—warfarin, alosetron, DULoxetine, theophylline, tiZANidine, quiNINE, tamoxifen, bendamustine, rasagiline, rOPINIRole, selegiline, propafenone, mexiletine, lidocaine, anagrelide, cloZAPine, cinacalcet, caffeine, monitor closely

Decrease:
effect of teriflunomide—cholestyramine, activated charcoal

NURSING CONSIDERATIONS
Assess:

• 
CNS symptoms: anxiety, confusion, vertigo

• 
GI status: diarrhea, vomiting, abdominal pain

• 
Cardiac status: tachycardia, palpitations, vasodilation, chest pain

Evaluate:

• 
Therapeutic response: decreased symptoms of MS

Teach patient/family:

• 
That blurred vision can occur

• 
To notify prescriber if pregnancy is planned or suspected

• 
Not to change dosing or stop taking without advice of prescriber

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

tofacitinib

(toe′fa-sye′ti-nib)

Xeljanz

Func. class.:
Antirheumatic agent (disease modifying), immunomodulator/biologic DMARD

Chem. class.:
Janus kinase inhibitor

ACTION:

Affects the signaling pathway of Janus kinase

USES:

Rheumatoid arthritis (moderately to severely active) in those who have taken methotrexate with inadequate response or intolerance

CONTRAINDICATIONS:

Hypersensitivity

Precautions:
Pregnancy (C), breastfeeding, neonates, infants, children, geriatric patients, neoplastic disease, ulcerative colitis, neutropenia, peptic ulcer disease

Active infections, risk of lymphomas/leukemias, TB, posttransplant lymphoproliferative disorder (PTLD), kidney disease, diabetes mellitus, HIV, hypercholesterolemia

 

Black Box Warning:

Infection, secondary malignancy

DOSAGE AND ROUTES
Calculator

• Adult:
PO
5 mg/day with or without methotrexate or other nonbiologic DMARDs

Available forms:
Tabs 5 mg

Administer:
PO route

• 
Without regard to food

SIDE EFFECTS

CNS:
Headache, paresthesias, insomnia, fatigue

CV:
Hypertension

GI:
Abdominal pain, nausea,
liver damage,
dyspepsia, vomiting, diarrhea, gastritis,
GI perforation, steatosis

HEMA:
Anemia,
lymphocytosis, lymphopenia,
neutropenia

INTEG:
Rash, pruritus

MISC:
Increased cancer risk, risk of infection (TB, invasive fungal infections, other opportunistic infections), may be fatal, posttransplant lymphoproliferative disorder (PTLD)

PHARMACOKINETICS

Bioavailability 70%, protein binding 40% (albumin), metabolism mediated by CYP3A4, half-life 3 hr, peak 0.5-1 hr

INTERACTIONS


 
Do not use with TNF modifiers, vaccines, potent immunosuppressants, other biologic DMARDS

Increase:
tofacinib effect—CYP3A4 inhibitors (amprenavir, boceprevir, delavirdine, ketoconazole, indinavir, itraconazole, dalfopristin/quinupristin, ritonavir, tipranavir, fluconazole, isoniazid, miconazole)

Decrease:
tofacinib effect—CYP3A4 inducers (rifampin, rifapentine, rifabutin, primidone, phenytoin, PHENobarbital, nevirapine, nafcillin, modafinil, griseofulvin, etravirine, efavirenz, barbiturates, bexarotene, bosentan, carBAMazepine, enzalutamide, dexamethasone)

Drug/Lab Test

Increase:
LFTs, cholesterol

Decrease:
neutrophils, lymphocytes, Hct, Hgb

NURSING CONSIDERATIONS
Assess:

• 
Monitor lipid profile, Hct/Hgb WBC, LFTs

• 
RA:
Pain, stiffness, ROM, swelling of joints before, during treatment

 

Black Box Warning:

Active infection, including localized infection:
evaluate and test patients for latent or active TB before use; treat with antimycobacterials before use of product; this product increases the risk of serious including fatal infections (pulmonary or extrapulmonary TB; invasive fungal infections; and bacterial, viral, and opportunistic infections); during and after use, monitor for infection including TB in those who tested negative for latent TB before use; if a serious infection develops, interrupt receipt until the infection is controlled

 

Black Box Warning:

Secondary malignancy:
lymphoma and other malignancies have been noted with product use

 
Epstein–Barr virus–associated posttransplant lymphoproliferative disorder (PTLD):
in kidney transplant patients when used with this product and immunosupressives

• 
Liver disease:
not recommended in severe liver disease, impairment; dose modification is needed with moderate liver impairment, monitor LFTs

 
GI perforation:
assess in those with diverticulitis, peptic ulcer disease, or ulcerative colitis

 
Immunosuppression:
obtain neutrophil and lymphocyte counts before use, do not start the product in lymphocyte count <500 cells/mm
3
or ANC <1000 cells/mm
3
; for ANC >1000 cells/mm
3
, monitor neutrophil counts after 4–8 wk and every 3 mo thereafter; lymphocyte count >500 cells/mm
3
, monitor lymphocyte counts every 3 mo

 
Anemia:
determine Hgb, do not start in Hgb <9 g/dl; in Hgb ≥9 g/dl, monitor Hgb after 4–8 wk and every 3 mo thereafter

 
Pregnancy (C)/breastfeeding:
use during pregnancy only if the potential benefit justifies the potential risk to the fetus; if pregnancy occurs, enrollment in the pregnancy registry is encouraged by calling 1–877–311–8972; discontinue product or breastfeeding, serious adverse reactions can occur in nursing infants

 

Black Box Warning:

Neoplastic disease (lymphomas/leukemias)

Evaluate:

• 
Therapeutic response: decreased inflammation, pain in joints, decreased joint destruction

Teach patient/family:

• 
Not to have vaccines while taking this product

• 
Not to take any live virus vaccines during treatment

• 
To report signs of infection, allergic reaction

 
Pregnancy C:
teach patient to report if pregnancy is planned or suspected, do not breastfeed

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