Mosby's 2014 Nursing Drug Reference (322 page)

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

pitavastatin (Rx)

(pit′a-va-stat′-in)

Livalo

Func. class.:
Antilipidemic

Chem. class.:
HMG-CoA reductase inhibitor

Do not confuse:
pitavastatin
/pravastatin

ACTION:

Inhibits HMG-CoA reductase enzyme, which reduces cholesterol synthesis; high doses lead to plaque regression

USES:

As an adjunct for primary hypercholesterolemia (types Ia, Ib), dysbetalipoproteinemia, elevated triglyceride levels, prevention of CV disease by reduction of heart risk in those with mildly elevated cholesterol

Unlabeled uses:
Atherosclerosis

CONTRAINDICATIONS:

Pregnancy (X), breastfeeding, hypersensitivity, active hepatic disease, cholestasis

Precautions:
Past hepatic disease, alcoholism, severe acute infections, trauma,
severe metabolic disorders, electrolyte imbalance, seizures, surgery, organ transplant, endocrine disease, females, hypotension, renal disease

DOSAGE AND ROUTES
Calculator

• Adult:
PO
2 mg/day, usual range 1-4, max 4 mg/day

Renal dose

• Adult:
PO
CCr 30-<60 ml/min, 1 mg daily, max 2 mg daily; CCr <30 ml/min on hemodialysis, 1 mg daily, max 2 mg daily; CCr <30 ml/min, not recommended

Atherosclerosis (unlabeled)

• Adult:
PO
4 mg/day

Available forms:
Tabs 1, 2, 4 mg

Administer:

• 
Total daily dose any time of day without regard to meals

• 
Storage in cool environment in tight container protected from light

SIDE EFFECTS

CNS:
Headache

GI:
Constipation, diarrhea

INTEG:
Rash, pruritus, alopecia

MS:
Arthralgia, myalgia,
rhabdomyolysis

RESP:
Pharyngitis

PHARMACOKINETICS

Peak 1 hr; metabolized in liver, excreted in urine, feces; half-life 12 hr; protein binding 99%; concentrations lower in healthy African Americans

INTERACTIONS

Increase:
risk for possible rhabdomyolysis—azole antifungals, cycloSPORINE, erythromycin, niacin, gemfibrozil, clofibrate

Increase:
levels of pitavastatin—erythromycin

Drug/Herb

Increase:
pitavastatin—red yeast rice

Drug/Lab Test

Increase:
bilirubin, alk phos, ALT, AST

Interference:
thyroid function tests

NURSING CONSIDERATIONS
Assess:

• 
Diet;
obtain diet history including fat, cholesterol in diet

• 
Cholesterol, triglyceride levels periodically during treatment; check lipid panel 6 wk after changing dose

• 
Hepatic studies at 12 wk after starting treatment, then q6mo; if AST >3× normal, reduce or discontinue; AST, ALT, LFTs may be increased

• 
Renal studies in patients with compromised renal system: BUN, I&O ratio, creatinine

 
Rhabdomyolysis:
muscle pain, tenderness; obtain CPK baseline; if markedly increased, product may need to be discontinued

Evaluate:

• 
Therapeutic response: decrease in cholesterol to desired level after 6 wk

Teach patient/family:

• 
That blood work will be necessary during treatment

• 
To report blurred vision, severe GI symptoms, headache, muscle pain, weakness, tenderness

• 
That previously prescribed regimen will continue: low-cholesterol diet, exercise program, smoking cessation

• Not to take product if pregnant (X) or if pregnancy is planned or suspected (notify prescriber); to avoid breastfeeding

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

plasma protein fraction (Rx)

Plasmanate

Func. class.:
Hematological agent

Chem. class.:
Plasma volume expander

ACTION:

Exerts similar oncotic pressure as human plasma, expands blood volume

USES:

Hypovolemic shock, hypoproteinemia, ARDS, preoperative cardiopulmonary bypass, acute hepatic failure, nephrotic syndrome, cardiogenic shock

CONTRAINDICATIONS:

Hypersensitivity to this product or albumin; CHF, severe anemia, renal insufficiency, hyponatremia, cardiopulmonary bypass

Precautions:
Pregnancy (C), decreased salt intake, decreased cardiac reserve, lack of albumin deficiency, hepatic disease

DOSAGE AND ROUTES
Calculator
Hypovolemia

• Adult:
IV INF
250-500 ml (12.5-25 g protein), max 10 ml/min

• Child:
IV INF
10-30 ml/kg at max 5-10 ml/min

Hypoproteinemia

• Adult:
IV INF
1000-1500 ml/day, max 8 ml/min

Available forms:
Inj 5%

Administer:
IV route

• 
IV access at distant site from infection or trauma; no dilution required; use inf pump, use large-gauge needle (≥20 G); discard unused portion; infuse slowly to prevent hypotension

• 
Within 4 hr of opening, discard partially used vials

• 
Do not use sol that has been frozen

• 
Adjust rate to changes in B/P

Additive compatibilities:
Carbohydrate and electrolyte sol, whole blood, packed RBCs, chloramphenicol, tetracycline

SIDE EFFECTS

CNS:
Fever, chills, headache, paresthesias, flushing

CV:
Fluid overload,
hypotension, erratic pulse

GI:
Nausea, vomiting, increased salivation

INTEG:
Rash, urticaria, cyanosis

RESP:
Altered respirations, dyspnea,
PE

PHARMACOKINETICS

Metabolized as a protein/energy source

INTERACTIONS
Drug/Lab Test

False increase:
alk phos

NURSING CONSIDERATIONS
Assess:

• 
Blood studies: Hct, Hgb, electrolytes, serum protein; if serum protein declines, dyspnea, hypoxemia can result

• 
B/P (decreased), pulse (erratic), respiration during inf

• 
I&O ratio; urinary output may decrease

• Allergy: fever, rash, itching, chills, flushing, urticaria, nausea, vomiting, hypotension requires discontinuation of inf; use new lot if therapy reinstituted; premedicate with diphenhydrAMINE

 
Increased CVP reading: distended neck veins indicate circulatory overload; SOB, anxiety, insomnia, expiratory crackles, frothy blood-tinged cough, cyanosis indicate pulmonary overload

Perform/provide:

• 
Adequate hydration before administration

• 
Storage at room temp, max 86° F

Evaluate:

• 
Therapeutic response: increased B/P, decreased edema, increased serum albumin

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