Mosby's 2014 Nursing Drug Reference (94 page)

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

cinacalcet (Rx)

(sin-a-kal′set)

Sensipar

Func. class.:
Calcium receptor agonist

Chem. class.:
Polypeptide hormone

ACTION:

Directly lowers PTH levels by increasing sensitivity of calcium-sensing receptors to extracellular calcium

USES:

Hypercalcemia with parathyroid carcinoma, secondary hyperparathyroidism with chronic kidney disease for patient on dialysis, primary hyperparathyroidism

CONTRAINDICATIONS:

Hypersensitivity, hypocalcemia

Precautions:
Pregnancy (C), breastfeeding, children, seizure disorders, hepatic disease

DOSAGE AND ROUTES
Calculator
Parathyroid carcinoma

• Adult:
PO
30 mg bid, titrate q2-4wk, with sequential doses of 30 mg bid, 60 mg bid, 90 mg bid, 90 mg tid-qid to normalize calcium levels

Secondary hyperparathyroidism

• Adult:
PO
30 mg/day, titrate no more frequently than q2-4wk with sequential doses of 30, 60, 90, 120, 180 mg/day

Available forms:
Tabs 30, 60, 90 mg

Administer:

• 
Swallow tabs whole; do not break, crush, or chew; use with food or right after a meal

• 
Can be used alone or in combination with vit D sterols, phosphate binders

• 
Storage at <77° F (25° C)

Secondary hyperthyroidism

• 
Titrate q2-4wk to target iPTH consistent with National Kidney Foundation–Kidney Disease Outcomes Quality Initiative (NKF-K/DOQI) for chronic kidney disease patient on dialysis of 150-300 pg/ml; if iPTH <150-300 pg/ml, reduce dose of cinacalcet and/or vit D sterols or discontinue treatment

SIDE EFFECTS

CNS:
Dizziness, asthenia,
seizures,
tetany, hallucinations, depression

CV:
Hypertension, dysrhythmia exacerbation

GI:
Nausea, diarrhea, vomiting, anorexia

MISC:
Access infection, noncardiac chest pain, hypocalcemia

MS:
Myalgia

PHARMACOKINETICS

93%-97% bound to plasma; proteins metabolized by CYP3A4, 2D6, 1A2; half-life 30-40 hr; renal excretion of metabolites (80% renal, 15% in feces)

INTERACTIONS

Increase:
cinacalcet levels: CYP3A4 inhibitors (ketoconazole, erythromycin, itraconazole)

Increase:
levels of CYP2D6 inhibitors (flecainide, vinBLAStine, thioridazine, tricyclics)

Drug/Food

Increase:
action by high-fat meal

NURSING CONSIDERATIONS
Assess:

• 
Hypocalcemia:
cramping, seizures, tetany, myalgia, paresthesia; calcium, phosphorous within 1 wk and iPTH 1-4 wk after initiation or dosage adjustment when maintenance established; measure calcium, phosphorus monthly; iPTH q1-3mo, target range 150-300 pg/ml for iPTH level; biochemical markers of bone formation/resorption; radiologic evidence of fracture; serum testosterone

• 
Renal disease (without dialysis): These patients should not receive treatment with this product, high risk of hypocalcemia

• 
If calcium <8.4 mg/dl, do not start therapy

Evaluate:

• 
Therapeutic response: calcium levels 9-10 mg/dl, decreasing symptoms of hypercalcemia

Teach patient/family:

• 
To take with food or shortly after a meal, to take tabs whole

• 
To report cramping, seizures, muscle pain, tingling, tetany immediately

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

ciprofloxacin (Rx)

(sip-ro-floks′a-sin)

Cipro, Cipro XR

Func. class.:
Antiinfective—broad spectrum

Chem. class.:
Fluoroquinolone

Do not confuse:
ciprofloxacin
/cephalexin

ACTION:

Interferes with conversion of intermediate DNA fragments into high-molecular-weight DNA in bacteria; DNA gyrase inhibitor

USES:

Infection caused by susceptible
Escherichia coli, Enterobacter cloacae, Proteus mirabilis, Klebsiella pneumoniae, Proteus vulgaris, Citrobacter freundii, Serratia marcescens, Pseudomonas aeruginosa, Staphylococcus aureus, Staphylococcus epidermidis, Enterobacter, Campylobacter jejuni, Salmonella;
chronic bacterial prostatitis, acute sinusitis, postexposure inhalation anthrax, infectious diarrhea, typhoid fever, complicated intraabdominal infections, nosocomial pneumonia, urinary tract infections

Unlabeled uses:
Acinetobacter/woffii, Aeromonas hydrophila
, brucellosis,
Burkholderia, pseudomallei
, chancroid, cholera, dental infection,
Edwardsiella tarda
, endocarditis,
Enterobacter aerogenes
, granuloma inguinale,
Klebsiella oxytoca
, Legionnaire’s disease, melioidosis, meningococcal infection prophylaxis,
Pasteurella multocida
, PID, periodontitis, pharyngitis,
Salmonella sp., Stenotrophomonas maltophilia
, tularemia,
Vibrio cholerae/parahaemolyticus/vulnificus, Yersinia enterocolitica

CONTRAINDICATIONS:

Hypersensitivity to quinolones

Precautions:
Pregnancy (C), breastfeeding, children, geriatric patients, renal disease, epilepsy, QT prolongation, hypokalemia

 

Black Box Warning:

Tendon pain/rupture, tendinitis

DOSAGE AND ROUTES
Calculator
Uncomplicated urinary tract infections

• Adult:
PO
250 mg q12hr × 3 days or 500 mg q24hr × 3 days

Complicated/severe urinary tract infections

• Adult:
PO
500 mg q12hr or 1000 mg q24hr × 7-14 days;
IV
400 mg q12hr

Pyelonephritis, acute uncomplicated

• Adult:
PO
1000 mg q24hr × 7-14 days q4-6wk

Respiratory, bone, skin, joint infections

• Adult:
PO
500-750 mg q12hr × 7-14 days;
IV
400 mg q12hr

Nosocomial pneumonia

• Adult:
IV
400 mg q8hr × 10-14 days

Intraabdominal infections, complicated

• Adult:
PO
500 mg q12hr × 7-14 days;
IV
400 mg q12hr × 7-14 days, usually given with metroNIDAZOLE

Acute sinusitis, mild/moderate

• Adult:
PO
500 mg q12hr × 10 days;
IV
400 mg q12hr × 10 days

Inhalational anthrax (postexposure)

• Adult:
PO
500 mg q12hr × 60 days;
IV
400 mg q12hr × 60 days

• Child:
PO
15 mg/kg/dose q12hr × 60 days, max 500 mg/dose;
IV
10 mg/kg q12hr, max 400 mg/dose

Infectious diarrhea

• Adult:
PO
500 mg q12hr × 5-7 days

Chronic bacterial prostatis

• Adult:
PO
500 mg q12hr × 28 days;
IV
400 mg q12hr × 28 days

Renal disease

• Adult:
CCr 30-50 ml/min,
PO
250-500 mg q12hr; CCr 5-29 ml/min,
PO
250-500 mg q18hr;
IV
200-400 mg q18-24hr

Available forms:
Tabs 100, 250, 500, 750 mg; ext rel tabs (XR) 500, 1000 mg; inj 200 mg/20 ml, 400 mg/40 ml, 200 mg/100 ml D
5
, 400 mg/200 ml D
5
; oral susp 250 mg, 500 mg/5 ml

Administer:

• 
Obtain C&S before use

• 
Do not use theophylline with this product, will cause toxicity

• 
Use caution when giving with antidysrhythmics IA, III

PO route

• 
Do not break, crush, chew XR (ext rel) product, use adequate fluids to prevent crystalluria

• 
2 hr before or 2 hr after antacids, zinc, iron, calcium

• 
Do not give oral susp by GI tube

IV route

• 
Over 1 hr as an inf, comes in premixed plastic inf container or diluted 20- or 40-ml vial to a final conc of 0.5-2 mg/ml of NS or D
5
W; give through
Y
-tube or 3-way stopcock

Y-site compatibilities:
Amifostine, anakinra, anidulafungin, atenolol, aztreonam, bivalirudin, bleomycin, calcium gluconate, CARBOplatin, caspofungin, cefTAZidime, cisatracurium, CISplatin, clarithromycin, codeine, cytarabine, DACTINomycin, DAPTOmycin, dexmedetomidine, digoxin, diltiazem, diphenhydrAMINE, DOBUTamine, DOCEtaxel, doripenem, DOPamine, doxacurium, DOXOrubicin, epirubicin, eptifibatide, ertapenem, etoposide, fenoldopam, fludarabine, gallium, gemcitabine, gentamicin, granisetron, HYDROmorphone, hydrOXYzine, IDArubicin, ifosfamide, irinotecan, lidocaine, linezolid, LORazepam, LR, mechlorethamine, meperidine, methotrexate, metoclopramide, metroNIDAZOLE, midazolam, midodrine, milrinone, mitoXANtrone, mycophenolate, nesiritide, octreotide, ondansetron, oxaliplatin, oxytocin, PACLitaxel, palonosetron, pamidronate, pancuronium, piperacillin, potassium acetate/chloride, promethazine, ranitidine, remifentanil, rocuronium, sodium chloride, tacrolimus, teniposide, thiotepa, tigecycline, tirofiban, TNA, tobramycin, trastuzumab, vasopressin, vecuronium, verapamil, vinCRIStine, vinorelbine, voriconazole

SIDE EFFECTS

CNS:
Headache
, dizziness, fatigue, insomnia, depression,
restlessness
,
seizures,
confusion

GI:
Nausea, diarrhea
, increased ALT/AST, dry mouth, flatulence, heartburn,
vomiting
, oral candidiasis, dysphagia,
pseudomembranous colitis

GU:
Crystalluria, interstitial neuritis

HEMA:
Bone marrow depression

INTEG:
Rash
, pruritus, urticaria, photosensitivity, flushing, fever, chills,
toxic epidermal necrolysis

MISC:
Anaphylaxis, Stevens-Johnson syndrome,
visual impairment,
QT prolongation, pseudotumor cerebri

MS:
Tremor, arthralgia, tendinitis,
tendon rupture

PHARMACOKINETICS

PO:
Peak 1 hr; half-life 3-4 hr; excreted in urine as active product, metabolites 35%-40%, 20%-40% protein binding

INTERACTIONS

 

Black Box Warning:

Increase:
tendonitis, tendon rupture—Corticosteroids

Increase:
nephrotoxicity—cycloSPORINE

Increase:
ciprofloxacin levels—probenecid; monitor for toxicity

Increase:
levels of theophylline, warfarin, monitor blood levels, reduce dose

Increase:
QT prolongation—astemizole, droperidol, class IA/III antidysrhythmics, tricyclics, tetracyclines, local anesthetics, phenothiazines, haloperidol, risperiDONE, sertindole, ziprasidone, alfuzosin, arsenic trioxide, b-agonists, chloroquine, cloZAPine, cyclobenzapine, dasatinib, dolasetron, droperidol, flecainide, halogenated anesthetics, lapatinib, levomethadyl, macrolides, methadone, octreotide, ondansetron, paliperidone, palonosetron, pentamidine, propafenone, ranolazine, SUNItinib, tacrolimus, terfenadine, vardenafil, vorinostat; less likely than other quinolones

Decrease:
ciprofloxacin absorption—antacids that contain magnesium, aluminum; zinc, iron, sucralfate, enteral feedings, calcium

Drug/Food

Increase:
effect of caffeine

Decrease:
absorption—dairy products, food

Drug/Lab Test

Increase:
AST, ALT, BUN, creatinine, LDH, bilirubin, alk phos, glucose, proteinuria, albuminuria

Decrease:
WBC, glucose

NURSING CONSIDERATIONS
Assess:

• 
Infection:
WBC, temperature before treatment, periodically

 

Black Box Warning:

Myasthenia gravis:
Avoid use in these patients, increases muscle weakness

• 
CNS symptoms:
headache, dizziness, fatigue, insomnia, depression

• 
Renal, hepatic studies: BUN, creatinine, AST, ALT

• 
I&O ratio, urine pH <5.5 is ideal

 

Black Box Warning:

Tendonitis, tendon rupture:
Discontinue as first sign of tendon pain, inflammation; increased in those >60 yr, those taking corticosteroids, organ transplants

 
Anaphylaxis:
fever, flushing, rash, urticaria, pruritus, dyspnea

• 
Pseudomotor Cerebri:
May occur at excessive doses

Perform/provide:

• 
Limited intake of alkaline foods, products: milk, dairy products, alkaline antacids, sodium bicarbonate; caffeine intake if excessive cardiac or CNS stimulation

• 
Increase in fluids to 3 L/day to avoid crystallization in kidneys

Evaluate:

• 
Therapeutic response: decreased pain, frequency, urgency, C&S; absence of infection

Teach patient/family:

• 
Not to take any products that contain magnesium, calcium (such as antacids), iron, aluminum with this product or within 2 hr of product, to drink fluids to prevent crystals in urine

 

Black Box Warning:

To report tendon pain, chest pain, palpitations

• 
To ambulate, perform activities with assistance if dizziness occurs

• 
To complete full course of product therapy; not to double or miss doses

• 
To notify prescriber if rash occurs, discontinue product

• 
To notify prescriber if pregnancy is planned or suspected pregnancy (C), do not breastfeed

• 
To frequently rinse mouth; use sugarless candy, gum for dry mouth

• 
To contact prescriber if taking theophylline

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