Mosby's 2014 Nursing Drug Reference (342 page)

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RABEprazole (Rx)

(rah-bep′rah-zole)

Aciphex, Pariet

Func. class.:
Antiulcer, proton pump inhibitor

Chem. class.:
Benzimidazole

Do not confuse:
Aciphex
/Aricept/Accupril

ACTION:

Suppresses gastric secretion by inhibiting hydrogen/potassium ATPase enzyme system in the gastric parietal cells; characterized as a gastric acid pump inhibitor because it blocks the final step of acid production

USES:

Gastroesophageal reflux disease (GERD), severe erosive esophagitis, poorly responsive systemic GERD, pathologic hypersecretory conditions (Zollinger-Ellison syndrome, systemic mastocytosis, multiple endocrine adenomas); treatment of active duodenal ulcers with/without antiinfectives for
Helicobacter pylori;
daytime, nighttime heartburn

Unlabeled uses:
Gastric ulcer, heartburn,
H. pylori
eradication in children

CONTRAINDICATIONS:

Hypersensitivity to this product or proton pump inhibitors (PPIs)

Precautions:
Pregnancy (C), breastfeeding, children, Asian patients, diarrhea, geriatric patients, gastric cancer, hepatic/GI disease, IBS, osteoporosis, pseudomembranous colitis, ulcerative colitis, vit B
12
deficiency

DOSAGE AND ROUTES
Calculator
Healing of duodenal ulcers

• Adult:
PO
20 mg/day × ≤4 wk; to be taken after breakfast

Healing of erosive esophagitis or ulcerative GERD

• Adult:
PO
20 mg/day × 4-8 wk

• Adolescent and child ≥12 yr:
PO
20 mg/day up to 8 wk

Pathologic hypersecretory conditions

• Adult:
PO
60 mg/day; may increase to 120 mg in 2 divided doses

Gastric ulcer (unlabeled)

• Adult:
PO
20 mg/day after
AM
meal × 3-6 wk

Dyspepsia/heartburn (unlabeled)

• Adult:
PO
20 mg/day × ≤14 days

Available forms:
Del rel tabs 20 mg

Administer:

• 
PO:
Do not break, crush, chew del rel tab; after breakfast daily with full glass of water, without regard to food

SIDE EFFECTS

CNS:
Headache, dizziness, asthenia

CV:
Chest pain, angina, tachycardia, bradycardia, palpitations, peripheral edema

EENT:
Tinnitus, taste perversion

GI:
Diarrhea, abdominal pain, vomiting, nausea, constipation, flatulence, acid regurgitation
, abdominal swelling, anorexia, irritable colon, esophageal candidiasis, dry mouth,
pseudomembranous colitis

GU:
UTI, urinary frequency, increased creatinine,
proteinuria, hematuria,
testicular pain, glycosuria

HEMA:
Pancytopenia, thrombocytopenia, neutropenia, leukocytosis,
anemia

INTEG:
Rash
, dry skin, urticaria, pruritus, alopecia

META:
Hypoglycemia, increased hepatic enzymes, weight gain

MISC:
Back pain
, fever, fatigue, malaise,
Stevens-Johnson syndrome

RESP:
Upper respiratory tract infections, cough
, epistaxis,
pneumonia

PHARMACOKINETICS

Eliminated in urine as metabolites and in feces, terminal half-life 1-2 hr, metabolized by CYP2C19 enzyme system, protein binding 96.3%

INTERACTIONS

Increase:
bleeding risk—warfarin, clopidogrel

Increase:
serum levels of RABEprazole—benzodiazepines, phenytoin, clarithromycin, antacids, other proton pump inhibitors, H
2
blockers

Increase:
levels of—digoxin, nelfinavir/omeprazole

Decrease:
levels of RABEprazole—sucralfate, calcium carbonate, vit B
12

Decrease:
levels of ketoconazole, itraconazole, iron salts, atazanavir/ritonavir, ampicillin

Drug/Herb

Decrease:
RABEprazole—St. John’s wort

Drug/Lab Test

Decrease:
magnesium

NURSING CONSIDERATIONS
Assess:

• 
GI system: bowel sounds, abdomen for pain, swelling, anorexia, emesis/stool for occult blood

• 
Pseudomembranous colitis:
may occur with most antibiotic therapy; watery diarrhea, abdominal pain, fever

• 
Vit B
12
deficiency/cyanocobalamin/hypomagnesemia:
may occur after 3-12 mo of treatment; use magnesium, vit B
12
, cyanocobalamin supplement; if severe, discontinuing of product may be needed

• 
Hepatic studies: AST, ALT, alk phos during treatment; CBC with differential periodically

 
Serious skin reactions: Stevens-Johnson syndrome

• 
CBC with differential before, periodically during treatment; blood dyscrasias may occur (rare)

• 
Obtain susceptibility testing if
H. Pylori
treatment is ineffective, another anti-infective may be needed

Evaluate:

• 
Therapeutic response: absence of epigastric pain, swelling, fullness; decreased symptoms of GERD after 4-8 wk

Teach patient/family:

• 
To report severe diarrhea or black, tarry stools; product may have to be discontinued

• 
That hypoglycemia may occur if patient is diabetic

• 
To avoid hazardous activities because dizziness, drowsiness may occur

• 
To avoid alcohol, salicylates, NSAIDs because they may cause GI irritation; to avoid other OTC, herbal products unless approved by prescriber

• 
To use as directed for length of time prescribed; to take missed dose when remembered; not to double dose

• 
To notify prescriber if pregnancy planned, suspected

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

radioactive iodine
(sodium iodide)
131
I (Rx)

Func. class.:
Antithyroid

Chem. class.:
Radiopharmaceutical

ACTION:

Converted to protein-bound iodine by thyroid gland for use when needed

USES:

High dose:
Thyroid cancer, hyperthyroidism

Low dose:
Visualization to determine thyroid cancer, diagnostic aid for thyroid function studies

CONTRAINDICATIONS:

Pregnancy (X), breastfeeding, age <30 yr, recent MI, large nodular goiter, vomiting/diarrhea, acute hyperthyroidism, use of thyroid products

DOSAGE AND ROUTES
Calculator
Thyroid cancer

• Adult:
PO
50-150 mCi; may repeat, depending on clinical status

Hyperthyroidism

• Adult:
PO
4-10 mCi, depending on serum thyroxine level

Available forms:
Caps 1-50, 0.8-100 mCi; oral sol 7.05 mCi/ml, 3.5-150 mCi/vial; concentrated oral solution 1000 mCi/ml

Administer:

• 
Only after discontinuing all other antithyroid agents × 5-7 days

• 
After NPO overnight; food delays action

• 
During or within 10 days of menstruation

• 
Do not take antithyroid agents except propranolol, which decreases hyperthyroid symptoms, until total effect of taking
131
I has occurred (about 6 wk)

SIDE EFFECTS

CV:
Chest pain, tachycardia

EENT:
Sore throat, cough

ENDO:
Hypothyroidism,
hyperthyroid adenoma,
transient thyroiditis, goiter

GI:
Nausea, diarrhea, vomiting

HEMA:
Eosinophilia, lymphedema, leukemia, bone marrow depression, leukopenia,
anemia, lymph node swelling

INTEG:
Alopecia, rash, pruritus

RESP:
Cough

PHARMACOKINETICS

PO:
Onset 3-6 days; excreted in urine, sweat, feces, breast milk; crosses placenta; excreted in 56 days

INTERACTIONS

Increase:
Hypothyroidism—lithium

Decrease:
effect of I
131
—amiodarone

Decrease:
uptake—recent intake of stable iodine, thyroid, antithyroid products

Drugj/Lab Test

Decrease:
Hgb, T4, TSH

NURSING CONSIDERATIONS
Assess:

• 
Weight daily with same clothing, scale, time of day

• 
Blood work, including CBC for blood dyscrasias (leukopenia, thrombocytopenia, agranulocytosis)

• 
Overdose:
peripheral edema, heat intolerance, diaphoresis, palpitations, dysrhythmias, severe tachycardia, increased temp, delirium, CNS irritability

• 
Hypersensitivity:
rash, enlarged cervical lymph nodes; product may have to be discontinued

• 
Hypoprothrombinemia:
bleeding, petechiae, ecchymosis

• 
Clinical response: after 3 wk should include increased weight, pulse; decreased T
4

• 
Bone marrow depression:
sore throat, fever, fatigue

Perform/provide:

• 
Limited contact with patient: 1/2 hr/day for each person

• 
Adequate rest after treatment

• 
Fluids to 3-4 L/day for 48 hr to remove agent from body

Evaluate:

• 
Therapeutic response: weight gain, decreased pulse, decreased T
4
, B/P

Teach patient/family:

• 
To fast overnight before treatment, consume increased fluids for 48 hr after therapy

• 
To empty bladder often during treatment; to avoid irradiation of gonads

• 
To report redness, swelling, sore throat, mouth lesions; may indicate blood dyscrasias

• 
To avoid extended contact with children, spouse for 1 wk

• 
That bathroom may be used by entire family; to flush toilet several times

• 
To avoid coughing, expectorating for 24 hr (saliva and vomitus highly radioactive for 6-8 hr)

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