Mosby's 2014 Nursing Drug Reference (174 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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ferrous fumarate (Rx)

Ferretts, Ferrimin, Ferro-Sequels, Hemocyte, Palafer
, Walgreens Finest Iron

ferrous gluconate (Rx)

Apo-Ferrous Gluconate
, Ferate, Walgreens Gold Seal Ferrous Gluconate

ferrous sulfate (Rx)

Apo-Ferrous Sulfate
, Equaline Ferrous Sulfate, Leader Ferrous Sulfate, Slow Release Iron, Walgreens Gold Seal Ferrous Sulfate

ferrous sulfate, dried (Rx)

Slow Fe

carbonyl iron (
OTC
)

(kar′bo-nil)

ICAR Pediatric, Iron Chews

iron polysaccharides
(
OTC
)

iFerex, Niferex, Nu-Iron

Func. class.:
Hematinic

Chem. class.:
Iron preparation

ACTION:

Replaces iron stores needed for red blood cell development as well as energy and O
2
transport and use; fumarate contains 33% elemental iron; gluconate, 12%; sulfate, 20%; iron, 30%; ferrous sulfate exsiccated

USES:

Iron deficiency anemia, prophylaxis for iron deficiency in pregnancy, nutritional supplementation

CONTRAINDICATIONS:

Sideroblastic anemia, thalassemia, hemosiderosis/hemochromatosis

Precautions:
Pregnancy (B) (ferric gluconate complex), (C) (iron dextran, oral products), anemia (long term), ulcerative colitis/regional enteritis, peptic ulcer disease, hemolytic anemia, cirrhosis, sulfite sensitivity

 

Black Box Warning:

Accidental exposure

DOSAGE AND ROUTES
Calculator
Fumarate

• Adult:
PO
200-325 mg tid

• Child:
PO
3 mg/kg/day (elemental iron) tid-qid

• Infant:
PO
10-25 mg/day (elemental iron) in 3-4 divided doses, max 15 mg/day

Gluconate

• Adult:
PO
50-100 mg elemental iron tid

• Child:
PO
3 mg/kg/day in divided doses

Sulfate

• Adult:
PO
0.75-1.5 g/day in divided doses tid

• Child 6-12 yr:
PO
3 mg/kg/day in divided doses

Pregnancy

• Adult:
PO
300-600 mg/day in divided doses

Iron polysaccharide

• Adult:
PO
100-200 mg tid

• Child:
PO
4-6 mg/kg/day in 3 divided doses (severe iron deficiency)

Available forms:
Fumarate:
tabs 63, 195, 200, 324, 325 mg; chewable tabs 100 mg; cont rel tabs 300 mg; oral susp 100 mg/5 ml, 45 mg/0.6 ml;
gluconate:
tabs 300, 320, 325 mg; caps 86, 325,
435 mg; film-coated tabs 300 mg; elix 300 mg/5 ml;
sulfate:
tabs 195, 300, 325 mg; enteric-coated tabs 325 mg; ext rel tabs, time-rel caps, 525 mg;
dried:
tabs 200 mg; ext rel tabs 160 mg; ext rel caps 160 mg;
iron polysaccharide:
tabs 50 mg; caps 150 mg; sol 100 mg/5 ml

Administer:
PO route

• 
Swallow tabs whole; do not break, crush, or chew unless labeled as chewable

• 
Between meals for best absorption; may give with juice; do not give with antacids or milk, delay at least 1 hr; if GI symptoms occur, give after meals even if absorption is decreased; eggs, milk products, chocolate, caffeine interfere with absorption

• 
Liquid
through plastic straw to avoid discoloration of tooth enamel; dilute thoroughly

• 
At least 1 hr before bedtime; corrosion may occur in stomach; ferrous gluconate is less irritating of GI tract than ferrous sulfate

• 
For <6 mo for anemia

SIDE EFFECTS

GI:
Nausea, constipation, epigastric pain, black and red tarry stools
, vomiting, diarrhea

INTEG:
Temporarily discolored tooth enamel and eyes

SYST:
Hypersensitivity reactions (Ferrlecit)

PHARMACOKINETICS

PO:
Excreted in feces, urine, skin, breast milk; enters bloodstream; bound to transferrin; crosses placenta

INTERACTIONS

Increase:
action of iron preparation—ascorbic acid, chloramphenicol

Decrease:
absorption of penicillamine, levodopa, methyldopa, fluoroquinolones,
L
-thyroxine, tetracycline

Decrease:
absorption of iron preparations—antacids, H
2
-antagonists, proton pump inhibitors, cholestyramine, vit E

Drug/Food

Decrease:
absorption—dairy products, caffeine, eggs

Drug/Lab Test

False positive:
occult blood

NURSING CONSIDERATIONS
Assess:

• 
Blood studies: Hct, Hgb, reticulocytes, bilirubin before treatment, at least monthly; iron studies (Iron, TIBC, ferritin)

 
Toxicity:
nausea, vomiting, diarrhea (green then tarry stools), hematemesis, pallor, cyanosis, shock, coma

• 
Elimination; if constipation occurs, increase water, bulk, activity

• 
Nutrition:
amount of iron in diet (meat, dark green leafy vegetables, dried beans, dried fruits, eggs)

• 
Cause of iron loss or anemia, including salicylates, sulfonamides, antimalarials, quiNIDine

Perform/provide:

• 
Storage in tight, light-resistant container

Evaluate:

• 
Therapeutic response: improvement in Hct, Hgb, reticulocytes; decreased fatigue, weakness

Teach patient/family:

• 
That iron will turn stools black or dark green

• 
Accidental exposure:
to keep out of reach of children, pets; iron poisoning may occur if increased beyond recommended level

• 
Not to substitute 1 iron salt for another; that elemental iron content differs (e.g., 300 mg ferrous fumarate contains about 100 mg elemental iron; 300 mg ferrous gluconate contains only about 30 mg elemental iron)

• 
To avoid reclining position for 15-30 min after taking product to avoid esophageal corrosion

• 
To follow a diet high in iron; to avoid taking iron, dairy products, calcium
supplements, and vit C together because they compete for absorption

TREATMENT OF OVERDOSE:

Induce vomiting; give eggs, milk until lavage can be done

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

fesoterodine (Rx)

(fess′oh-ter-oh-deen)

Toviaz

Func. class.:
Overactive bladder product

Chem. class.:
Muscarinic receptor antagonist

ACTION:

Relaxes smooth muscles in urinary tract by inhibiting acetylcholine at postganglionic sites

USES:

Overactive bladder (urinary frequency, urgency), urinary incontinence

CONTRAINDICATIONS:

GI obstruction, ileus, pyloric stenosis, urinary retention, gastric retention, hypersensitivity, closed-angle glaucoma

Precautions:
Pregnancy (C), breastfeeding, children, renal/hepatic disease, urinary tract obstruction, ambient temperature increase, autonomic neuropathy, constipation, contact lenses, hazardous activity, GERD, gastroparesis, myasthenia gravis, prostatic hypertrophy, toxic megacolon, ulcerative colitis, possible cross-sensitivity with tolterodine

DOSAGE AND ROUTES
Calculator

• Adult and geriatric:
PO EXT REL
4 mg/day, may increase to 8 mg/day based on response, max 4 mg/day in those taking potent CYP3A4 inhibitors

Renal dose

• Adult:
PO
EXT REL CCr <30 ml/min, max 4 mg/day in severe renal impairment

Available forms:
EXT REL TABS
4, 8 mg

Administer:

• 
Do not break, crush, or chew ext rel product

• 
Give without regard to meals

SIDE EFFECTS

CV:
Chest pain, angina,
QT prolongation

EENT:
Xerophthalmia

GI:
Nausea, vomiting
, abdominal pain, constipation, dry mouth

GU:
Dysuria, urinary retention

INTEG:
Rash,
angioedema

MISC:
Peripheral edema, insomnia

MS:
Back pain

RESP:
Cough

SYST:
Infection

PHARMACOKINETICS

Peak 5 hr, rapidly absorbed, protein binding 50%, excreted in urine/feces, half-life 7 hr

INTERACTIONS

Increase:
action of fesoterodine—CYP3A4 inhibitors (antiretroviral protease inhibitors, macrolide antiinfectives, azole antifungals)

Increase:
anticholinergic effect—antimuscarinics, anticholinergics

Increase:
urinary frequency—diuretics

Drug/Herb

Decrease:
fesoterodine—caffeine, green tea, guarana

Drug/Food

Increase:
fesoterodine level—grapefruit juice

Decrease:
fesoterodine level—cola, coffee, tea

NURSING CONSIDERATIONS
Assess:

• 
Urinary patterns:
distention, nocturia, frequency, urgency, incontinence

• 
Allergic reactions:
rash; if this occurs, product should be discontinued

Perform/provide:

• 
Storage at room temp; protect from moisture

Evaluate:

• 
Therapeutic response: absence of urinary frequency, urgency, incontinence

Teach patient/family:

• 
Not to drink liquids before bedtime

• 
About the importance of bladder maintenance

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