Mosby's 2014 Nursing Drug Reference (17 page)

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

acamprosate

(a-kam-pro′sate)

Campral

Func. class.:
Alcohol deterrent

Chem. class.:
Synthetic amino acid neurotransmitter analog

ACTION:

Not completely understood; in vitro data suggest it has affinity for type A and type B GABA receptors, lowers neuronal excitability, centrally mediated

USES:

Alcohol abstinence management

CONTRAINDICATIONS:

 

Black Box Warning:

Hypersensitivity to this product or sulfites, creatinine clearance ≤30 ml/min

Precautions:
Pregnancy (C), breastfeeding, infants, children, ethanol intoxication, renal impairment, depression, suicidal ideation, driving or operating machinery, geriatric patients

DOSAGE AND ROUTES
Calculator

• Adult: PO
666 mg tid

Renal dosage

• Adult: PO
CCr 30-50 ml/min 333 mg tid; CCr <30 ml/min do not use

Available forms:
Del-rel tabs 333 mg

Administer

• 
Without regard to food; do not crush, chew, break delayed-release tab

• 
Use only after alcohol is stopped

SIDE EFFECTS

CNS:
Anxiety, depression, dizziness, headache, insomnia, paresthesias, suicidal ideation, tremor, abnormal thoughts, chills, drowsiness

CV:
Palpitations, hypertension, peripheral edema

EENT:
Rhinitis, pharyngitis, abnormal vision

GI:
Anorexia, constipation, diarrhea, dry mouth, abdominal pain, flatulence, nausea, vomiting, taste change, weight gain

GU:
Impotence

INTEG:
Rash, pruritus, increased sweating

MISC:
Infection, flulike syndrome

MS:
Back pain, myalgias, arthralgia

RESP:
Dyspnea, bronchitis

PHARMACOKINETICS

Peak 3-8 hr, half-life 20-33 hr

INTERACTIONS

Increase:
LFTs, blood glucose, bilirubin, uric acid

Decrease:
Hgb/Hct, platelets

NURSING CONSIDERATIONS
Assess:

• 
Mental status: depression, abnormal thinking, suicidal thoughts/behaviors, length of alcohol use, date of discontinuing alcohol use

• 
B/P baseline and periodically

Perform/provide:

• 
Storage at room temperature

Evaluate:

• 
Therapeutic response: Continued alcohol abstinence

Teach patient/family:

• 
To notify prescriber of depression, abnormal thoughts, suicidal thoughts/behaviors

• 
To take without regard to food; not to break, crush, chew delayed release tabs

• 
To notify prescriber if pregnancy is planned or suspected, to use effective contraception

• 
Not to engage in hazardous activities until effect is known

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

acarbose (Rx)

(ay-car′bose)

Precose

Func. class.:
Oral antidiabetic

Chem. class.:
α-Glucosidase inhibitor

Do not confuse:
Precose
/preCare

ACTION:

Delays digestion/absorption of ingested carbohydrates by inhibiting α-glucosidase, results in smaller rise in postprandial blood glucose after meals; does not increase insulin production

USES:

Type 2 diabetes mellitus, alone or in combination with a sulfonylurea, metformin

Unlabeled uses:
Adjunct in type 1 diabetes mellitus

CONTRAINDICATIONS:

Breastfeeding, hypersensitivity, diabetic ketoacidosis, cirrhosis, inflammatory bowel disease, ileus, colonic ulceration, partial intestinal obstruction, chronic intestinal disease, serum creatinine >2 mg/dl, CCr <25 ml/min

Precautions:
Pregnancy (B), children, renal/hepatic disease

DOSAGE AND ROUTES
Calculator

• Adult >60 kg (132 lb): PO
25 mg tid initially, with 1st bite of meal; maintenance dose may be increased to 50-100 mg tid; dosage adjustment at 4-8 wk intervals, individualized

• Adult <60 kg (132 lb): PO
max 50 mg tid

Type 1 diabetes mellitus (unlabeled)

• Adult: PO
50 mg tid with meals × 2 wk, then 100 mg tid with meals

Available forms:
Tabs 25, 50, 100 mg

Administer:
PO route

• 
With 1st bite of each meal 3 ×/day

SIDE EFFECTS

GI:
Abdominal pain, diarrhea, flatulence

PHARMACOKINETICS

Poor systemic absorption, peak 1 hr, duration 2-4 hr, metabolized in GI tract, excreted as intact product in urine, half-life 2 hr

INTERACTIONS

Increase:
acetaminophen toxicity—acetaminophen combined with alcohol

Increase or decrease:
glycemic control—androgens, lithium, bortezomib, quinolones

Decrease:
effect of digoxin

• 
Do not use with gatifloxacin

Increase:
hypoglycemia—sulfonylureas, insulin, MAOIs, salicylates, fibric acid derivatives, bile acid sequestrants, ACE inhibitors, angiotensin II receptor antagonists, beta blockers

Decrease:
effect, increase hyperglycemia—digestive enzymes, intestinal absorbents, thiazide diuretics, loop diuretics, corticosteroids, estrogen, progestins, oral contraceptives, sympathomimetics, isoniazid, phenothiazines; protease inhibitors, atypical antipsychotics, carbonic anhydrase inhibitors, cycloSPORINE, tacrolimus, baclofen

Drug/Herb

Increase:
hypoglycemia—chromium, garlic, horse chestnut

Drug/Lab Test

Increase:
ALT, AST

Decrease:
calcium, vit B
6
, Hgb, Hct

NURSING CONSIDERATIONS
Assess:

• 
Hypoglycemia
(weakness, hunger, dizziness, tremors, anxiety, tachycardia, sweating), hyperglycemia; even though product does not cause hypoglycemia, if
patient is on sulfonylureas or insulin, hypoglycemia may be additive; if hypoglycemia occurs, treat with dextrose, or, if severe, with IV glucose or glucagon

• 
For stress, surgery, or other trauma that may require change in dose

• 
Monitor AST, ALT q3mo × 1 yr and periodically thereafter; if elevated, dose may need to be reduced or discontinued, usually increased with doses ≥300mg/day; A1c q3mo, monitor serum glucose, 1 hr PP throughout treatment

• 
GI side effects for tolerability/compliance

Perform/provide:

• 
Storage in tight container in cool environment

Evaluate:

• 
Therapeutic response: improved signs/symptoms of diabetes mellitus (decreased polyuria, polydipsia, polyphagia; clear sensorium, absence of dizziness, stable gait)

Teach patient/family:

• 
The symptoms of hypo/hyperglycemia, what to do about each

• 
That medication must be taken as prescribed; explain consequences of discontinuing medication abruptly; that insulin may need to be used for stress, including trauma, surgery, fever

• 
To avoid OTC medications and herbal supplements unless approved by health care provider

• 
That diabetes is a lifelong illness; that the diet and exercise regimen must be followed; that this product is not a cure

• 
To carry emergency ID and a glucose source; to avoid sugar, because sugar is blocked by acarbose

• 
That blood glucose monitoring is required to assess product effect

• 
To avoid breastfeeding if using acarbose with other antidiabetics

• 
That GI side effects may occur

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

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