Mosby's 2014 Nursing Drug Reference (20 page)

BOOK: Mosby's 2014 Nursing Drug Reference
3.86Mb size Format: txt, pdf, ePub

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

activated charcoal (
OTC
)

Actidose-Aqua, Actidose with Sorbitol, Charcoal Plus, Charcoal Plus DS, Charcocaps, EZ Char

Func. class.:
Antiflatulent; antidote

Do not confuse:
Actidose
/Actos

ACTION:

Binds poisons, toxins, irritants; increases adsorption in GI tract; inactivates toxins and binds until excreted

USES:

Poisoning, overdose

Unlabeled uses:
Diarrhea, flatulence

CONTRAINDICATIONS:

Hypersensitivity to this product, unconsciousness, semiconsciousness, cyanide poisoning, mineral acids, alkalis, gag reflex depression, ethanol intoxication, intestinal obstruction, absent bowel sounds

Precautions:
Pregnancy (C), hypersensitivity to quiNIDine, quiNINE

DOSAGE AND ROUTES
Calculator

Children should not get more than 1 dose of products that contain sorbitol

Poisoning

• 
Tabs/caps should not be used for poisonings

• Adult/adolescents: PO
(activated charcoal aqueous susp) 5-10 × estimated weight of drug/chemical ingested or 50-100 g dose, may repeat q4-6hr as needed; (activated charcoal with sorbitol susp) 50 g as a single dose, do not use multiple dosing

• Child: PO
(activated charcoal aqueous susp) 1-2 g/kg/dose or 25-50 g dose, may repeat as needed q4-6hr

• Infant: PO
(activated charcoal aqueous susp) 1 g/kg/dose, may repeat as needed q4-6hr

Diarrhea/flatulance (unlabeled)

• Adult: PO
(CharcoCaps) 520 mg (2 caps) after meals or prn, max 4.16 g (16 cap)/day

Available forms:
Powder 15, 25
, 30, 40, 120, 240 g/container; oral susp 12.5 g/60 ml, 15 g/72 ml, 15 g/120 ml, 25 g/120 ml, 30 g/120 ml, 50 g/240 ml; 15 g/120 ml
, 25 g/125 ml, 50 g/225 ml, 50 g/250 ml

Administer:

• 
Storage in tightly closed container to prevent absorption of gases

• 
Use stool softener or laxative to lessen constipation unless sorbitol has been given

PO route

• 
Give orally to those with intact gag reflexes, protected airways

• 
After inducing vomiting unless vomiting contraindicated (i.e., cyanide or alkalis)

• 
After mixing with water or fruit juice to form thick syrup; do not use dairy products, chocolate syrup to mix charcoal

• 
Repeat dose if vomiting occurs soon after dose; give with a laxative to promote elimination

• 
After spacing at least 2 hr before or after other products or absorption will be decreased

• 
Do not use tabs, caps to treat overdose

NG route

• 
Through nasogastric tube if patient unable to swallow

SIDE EFFECTS

GI:
Nausea, black stools
, vomiting, constipation, diarrhea, abdominal pain

OTHER:
Pulmonary aspiration

PHARMACOKINETICS

PO:
Excreted in feces, not absorbed, excreted unchanged in feces

INTERACTIONS

• 
Inactivation of acetylcysteine

Decrease:
effects of acarbose, carBAMazepine, digoxin, ipecac, phenytoin, acetaminophen, barbiturates, furosemide, methotrexate, phenothiazine, salicylates, tricyclics; use for overdose

NURSING CONSIDERATIONS
Assess:

• 
Respiration, pulse, B/P to determine charcoal effectiveness if taken for barbiturate/opiate poisoning; intact gag reflex, serum

• 
Not used for all types of overdose

Evaluate:

• 
Therapeutic response: LOC alert (poisoning)

Teach patient/family:

• 
That stools will be black

• 
How to prevent further poisonings

• 
To drink 8 glasses of water to prevent constipation

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

acyclovir (Rx)

(ay-sye′kloe-veer)

Zovirax

Func. class.:
Antiviral

Chem. class.:
Purine nucleoside analog

Do not confuse:
Zovirax
/Zyvox/Valtrex/Zostrix

ACTION:

Interferes with DNA synthesis by conversion to acyclovir triphosphate, thereby causing decreased viral replication

USES:

Mucocutaneous herpes simplex virus, herpes genitalis (HSV-1, HSV-2), varicella infections, herpes zoster, herpes simplex encephalitis

Unlabeled uses:
Bell’s palsy, prevention of CMV, Epstein-Barr virus, esophagitis, hairy leukoplakia, prevention of herpes labialis, herpes simplex, herpes simplex ocular prophylaxis, keratoconjunctivitis, pharyngitis, pneumonitis, prevention of postherpetic neuralgia, proctitis, stomatitis, tracheobronchitis, varicella prophylaxis

CONTRAINDICATIONS:

Hypersensitivity to this product, valacyclovir

Precautions:
Pregnancy (B), breastfeeding, renal/hepatic/neurologic disease, electrolyte imbalance, dehydration, hypersensitivity to famciclovir, ganciclovir, penciclovir, valganciclovir

DOSAGE AND ROUTES
Calculator
Herpes simplex (recurrent)

• Adult: PO
400 mg 3 ×/day for 5 days or 200 mg 5 ×/day × 5 days

• Adult and child >12 yr: IV INF
5 mg/kg over 1 hr q8hr × 7 days, use ideal body weight for patients with obesity

• Infant >3 mo/child <12 yr: IV INF
10 mg/kg q8hr × 7 day; if HIV infected 5-10 mg/kg q8hr (moderate to severe)

• Neonate: IV INF
10 mg/kg q8hr × 10 days, may use higher dose

Genital herpes

• Adult: PO
200 mg q4hr (5 ×/day while awake) for 5 days to 6 mo depending on whether initial, recurrent, or chronic;
IV
5 mg/kg q8hr × 5 days

Genital herpes, initial limited, mucocutaneous HSV in immunocompromised patients, non-life-threatening

• Adult/child ≥12 yr:
top cover lesions q3hr 6 times/day

Herpes simplex encephalitis

•Adult: IV
10 mg/kg over 1 hr q8hr × 10 days

• Child 3 mo-12 yr: IV
20 mg/kg q8hr × 10 days

• Child birth-3 mo: IV
10 mg/kg q8hr × 10 days

Herpes labialis, recurrent

• Adult/child ≥12 yr:
top apply cream 5 ×/day for 4 days, start as soon as symptoms appear

Herpes zoster

• Adult: PO
800 mg q4hr while awake × 7-10 days;
IV
10 mg/kg q8hr × 7 days

Herpes zoster (shingles) immunocompromised patients

• Adult/adolescent: PO
800 mg q4hr 5×/day for 7-10 days;
IV
10 mg/kg q8hr × 7 days

• Child

12 yr: IV
10 mg/kg/dose q8hr × 7 days

• Infant/child <12 yr: IV
20 mg/kg/dose q8hr × 7-10 days

Herpes zoster (shingles) immunocompetent

• Adult: PO
800 mg q4hr 5×/day × 7-10 days; start within 48-72 hr of rash onset

Varicella (chickenpox) immunocompetent

• Adult/adolescent/child >40 kg: PO
800 mg 4×/day × 5 days

• Child ≥2 yr and ≤40 kg: PO
20 mg/kg/dose (max 800 mg) 4×/day × 5 days

Mucosal/cutaneous herpes simplex infections in immunosuppressed patients

• Adult and child
>
12 yr: IV
5 mg/kg q8hr × 7 days

• Infant >3 mo/child <12: IV
10 mg/kg q8hr × 7 days

Renal dose

• Adult and child: PO/IV
CCr >50 ml/min 100% dose q8hr, CCr 25-50 ml/min 100% dose q12hr, CCr 10-25 ml/min 100% dose q24hr, CCr 0-10 ml/min 50% dose q24hr

Recurrent ocular herpes, prevention (unlabeled)

• Adult/child ≥12 yr: PO
600-800 mg every day × 8-12 mo

CMV prophylaxis (unlabeled)

•Adult: IV
500 mg/m
2
q8hr

Herpes simplex in pneumonitis/esophagitis/tracheobronchitis/proctitis/stomatitis/pharyngitis (unlabeled)

• Adult and adolescent: IV
5-10 mg/kg q8hr × 2-7 days or
PO
200 mg q4hr 5×/day × 7-10 days or 400 mg 3-5 ×/day × ≥10 days

• Child 6 mo-12 yr: IV
1000 mg/day in 3-5 divided doses × 7-14 days

Herpes simplex prophylaxis for chronic suppression therapy (unlabeled)

• Adult and adolescent: PO
400 mg bid up to 12 mo

• Child: PO
800-1000 mg/day in 2-5 divided doses, max 80 mg/kg/day

Available forms:
Caps 200 mg; tabs 400, 800 mg; powder for inj 500, 1000 mg; sol for inj 50 mg/ml; oral susp 200 mg/5 ml; ointment/cream 5%

Administer:
PO route

• 
Do not break, crush, or chew caps

• 
May give without regard to meals, with 8 oz of water

• 
Shake susp before use

Intermittent IV INF route

• 
Increase fluids to 3 L/day to decrease crystalluria; most critical during first 2 hr after IV

• 
Reconstitute with 10 ml compatible sol/500 mg or 20 mg/1 g of product, conc of 50 mg/ml, shake, further dilute in 50-125 ml compatible sol; use within 12 hr; give over at least 1 hr (constant rate) by inf pump to prevent nephrotoxicity; do not reconstitute with sol containing benzyl alcohol in neonates

Topical route

• 
Use finger cot or glove to cover all lesions completely, do not get in eye, wash hands after use

Solution compatibilities:
D
5
W, LR, or NaCl (D
5
0.9% NaCl, 0.9% NaCl) sol

Y-site compatibilities:
Alemtuzumab, alfentanil, allopurinol, amikacin, aminophylline, amphotericin B cholesteryl, amphotericin B liposome, ampicillin, anidulafungin, argatroban, atracurium, bivalirudin, buprenorphine, busulfan, butorphanol, calcium chloride/gluconate, CARBOplatin, cefazolin, cefonicid, cefoperazone, cefotaxime, cefoxitin, ceftazidime, ceftizoxime, cefTRIAXone, cefuroxime, cephapirin, chloramphenicol, cholesteryl sulfate complex, cimetidine, clindamycin, dexamethasone sodium phosphate, dimenhyDRINATE, DOXOrubicin, doxycycline, erythromycin, famotidine, filgrastim, fluconazole, gallium, gentamicin, granisetron, heparin, hydrocortisone sodium succinate, hydromorphone, imipenem/cilastatin, LORazepam, magnesium sulfate, melphalan, methylPREDNISolone sodium succinate, metoclopramide, metroNIDAZOLE, multivitamin, nafcillin, oxacillin, paclitaxel, penicillin G potassium, PENTobarbital, perphenazine, piperacillin, potassium chloride, propofol, ranitidine, remifentanil, sodium bicarbonate, tacrolimus, teniposide, theophylline, thiotepa, ticarcillin, tobramycin, trimethoprim-sulfamethoxazole, vancomycin, vasopressin, voriconazole, zidovudine

SIDE EFFECTS

CNS:
Tremors, confusion, lethargy, hallucinations,
seizures,
dizziness, headache, encephalopathic changes

EENT:
Gingival hyperplasia

GI:
Nausea, vomiting, diarrhea, increased ALT/AST, abdominal pain, glossitis, colitis

GU:
Oliguria, proteinuria, hematuria,
vaginitis, moniliasis,
glomerulonephritis, acute renal failure,
changes in menses, polydipsia

HEMA:
Thrombotic thrombocytopenia purpura, hemolytic uremic syndrome
(immunocompromised patients)

INTEG:
Rash, urticaria, pruritus, pain or phlebitis at IV site, unusual sweating, alopecia,
Stevens-Johnson syndrome

MS:
Joint pain, leg pain, muscle cramps

PHARMACOKINETICS

Distributed widely; crosses placenta; CSF concentrations are 50% plasma; protein binding 9%-33%

PO:
Absorbed minimally, onset unknown, peak 1.5-2 hr, terminal half-life 2.5-3.3 hr

IV:
Onset immediate, peak immediate, duration unknown, half-life 20 min-3 hr (terminal); metabolized by liver, excreted by kidneys as unchanged product (95%)

INTERACTIONS

Increase:
CNS side effects; zidovudine

Increase:
levels, toxicity—probenecid

Increase:
nephrotoxicity—aminoglycosides

Increase:
concentrations of—entecavir, pemetrexed, tenofovir

Decrease:
action of—hydantoins, valproic acid

Drug/Lab Test

Increase:
BUN, creatinine

NURSING CONSIDERATIONS
Assess:

• 
Signs of infection, anemia


 
Toxicity
: any patient with compromised renal system because product is excreted slowly with poor renal system function; toxicity may occur rapidly


 
Hepatic, renal studies: AST, ALT; urinalysis, protein, BUN, creatinine, CCr, watch for increasing BUN and serum creatinine or decreased CCr; I&O ratio; report hematuria, oliguria, fatigue, weakness; may indicate
nephrotoxicity;
check for protein in urine during treatment

• 
Bowel pattern before, during treatment; if severe abdominal pain with bleeding occurs, product should be discontinued

• 
Skin eruptions: rash, urticaria, itching

• 
Allergies before treatment, reaction of each medication; place allergies on chart in bright red letters

• 
Neurologic status with herpes encephalitis

Perform/provide:

• 
Storage at room temp for up to 12 hr after reconstitution; if refrigerated, sol may show a precipitate that clears at room temp; yellow discoloration does not affect potency

• 
Adequate intake of fluids (2 L) to prevent deposits in kidneys, more likely to occur with rapid administration or in dehydration

Evaluate:

• 
Therapeutic response: absence of itching, painful lesions; crusting and healed lesions; decreased symptoms of chickenpox; healing, decreased pain with herpes zoster

Teach patient/family:

• 
To take as prescribed; if dose is missed, take as soon as remembered up to 1 hr before next dose; do not double dose

• 
That product may be taken orally before infection occurs; product should be taken when itching or pain occurs, usually before eruptions

• 
That sexual partners need to be told that patient has herpes because they can become infected; condoms must be worn to prevent reinfections

• 
Not to touch lesions to avoid spreading infection to new sites

• 
That product does not cure infection, just controls symptoms and does not prevent infecting others

• 
That product must be taken in equal intervals around the clock to maintain blood levels for duration of therapy

• 
To seek dental care during treatment to prevent gingival hyperplasia

• 
That women with genital herpes are more likely to develop cervical cancer; to keep all gynecologic appointments

TREATMENT OF OVERDOSE:

Discontinue product, hemodialysis, resuscitate if needed

Other books

Across the Pond by Terry Eagleton
Subculture by Sarah Veitch
The Tyrant's Novel by Thomas Keneally
Maybe This Christmas by Sarah Morgan
The Departed by Templeton, J. A.
Alien by Laurann Dohner, Leora Gonzales, Jaid Black, Tara Nina
Lords of Salem by Rob Zombie