Mosby's 2014 Nursing Drug Reference (127 page)

BOOK: Mosby's 2014 Nursing Drug Reference
12.16Mb size Format: txt, pdf, ePub

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

dextromethorphan (
OTC
)

(dex-troe-meth-or′fan)

Balminil
, Benylin
, Buckley’s DM, Buckley’s Mixture, Delsym 12-Hour, ElixSure Cough, Koffex
, Robitussin, Robitussin Cough with honey, Robitussin Long Acting Strength, Scot-Tussin Diabetes CF, Silphen-DM, Top Care Day Time Cough, Top Care Tussin Cough Suppressant Long-Acting, Triaminic Long Acting Cough, Tylenol Children’s Simply Cough, Vicks DayQuil Cough, Vicks Formula 44, Wal-Tussin

Func. class.:
Antitussive, nonopioid

Chem. class.:
Levorphanol derivative

ACTION:

Depresses cough center in medulla by direct effect

USES:

Nonproductive cough caused by colds or inhaled irritants

CONTRAINDICATIONS:

Hypersensitivity

Precautions:
Pregnancy (C), fever, hepatic disease, asthma/emphysema, chronic cough

DOSAGE AND ROUTES
Calculator

• Adult and child ≥12 yr: PO
10-20 mg q4hr or 30 mg q6-8hr, max 120 mg/day;
SUS-REL LIQ
60 mg q12hr, max 120 mg/day

• Child 6-12 yr: PO
5-10 mg q4hr;
SUS REL LIQ
30 mg bid,
LOZ
5-10 mg q1-4hr; max 60 mg/day

• Child 4-6 yr: PO
2.5-7.5 mg q4-8hr, max 30 mg/day;
SUS REL LIQ
15 mg bid


Child <2-5 yr:
2.5-5 mg q4hr or 7.5 mg q6-8hr, max 30 mg/day;
EXT REL
not recommended

Available forms:
Liq 7.5, 15 mg/5 ml; syr 10 mg/5 ml, 15 mg/5 ml, 30 mg/15
ml; gel caps 15 mg; caps 15 mg; ext rel susp: 30 mg/5 ml

Administer:

• 
Chew tabs:
chew well;
syrup:
use calibrated measuring device;
ext rel susp:
shake well, use calibrated measuring device

• 
Decreased dose for geriatric patients; metabolism may be slowed

SIDE EFFECTS

CNS:
Dizziness
, sedation, confusion, ataxia, fatigue

GI:
Nausea

PHARMACOKINETICS

PO:
Onset 15-30 min, duration 3-6 hr

SUS:
Duration 12 hr, terminal half-life 11 hr, metabolized by the liver, excreted via kidneys

INTERACTIONS

• 
Do not give with MAOIs or within 2 wk of MAOIs; avoid furazolidone, linezolid, procarbazine (MAOI activity)

Increase:
CNS depression—alcohol, antidepressants, antihistamines, opioids, sedative/hypnotics

Increase:
adverse reactions—amiodarone, quiNIDine, serotonin receptor agonist, sibutramine, SSRI

NURSING CONSIDERATIONS
Assess:

• 
Cough:
type, frequency, character, including sputum

• 
Increase fluids to liquify secretions

Evaluate:

• 
Therapeutic response: absence of cough

Teach patient/family:

• 
To avoid driving, other hazardous activities until stabilized on medication

• 
To avoid smoking, smoke-filled rooms, perfumes, dust, environmental pollutants, cleaners that increase cough

• 
To avoid alcohol, CNS depressants

• 
To notify prescriber if cough persists over a few days

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

dextrose (
D
-glucose) (Rx)

Func. class.:
Caloric, parenteral solution

ACTION:

Needed for adequate utilization of amino acids; decreases protein, nitrogen loss; prevents ketosis

USES:

Increases intake of calories; increases fluids in patients unable to take adequate fluids, calories orally; acute hypoglycemia

CONTRAINDICATIONS:

Hyperglycemia, delirium tremens, hemorrhage (cranial/spinal), CHF, anuria, allergy to corn products (concentrated products)

Precautions:
Cardiac/renal/hepatic disease, diabetes mellitus, carbohydrate intolerance

DOSAGE AND ROUTES
Calculator
Hypoglycemia


Adult: PO/IV
10-25 mg g/dose (20-50 ml of a 50% sol), may need subsequent continuous IV infusion of 10% dextrose

Acute symptomatic hypoglycemia (infants/neonates)

• Neonate/infant: IV
250-500 mg/kg/dose (25% sol)

Available forms:
Inj 2.5%, 5%, 10%, 20%, 25%, 30%, 38.5%, 40%, 50%, 60%, 70%; oral gel 40%; chew tab 5 g

Administer:

• Do not use concentrated solutions IM/IV; 25%, 50% may be used IV

• 
Only (4%) protein and dextrose (up to 12.5%) via peripheral vein; stronger sol: central IV administration

• 
May be given undiluted via prepared sol; give 10% sol, 5 ml/15 sec; 10% sol, 1000 ml/3 hr or more; 20% sol, 500 ml/1/2-1 hr; 50% sol, 10 ml/min; control rate, rapid inf may cause fluid shifts, do not use same inf set as used for blood,
never discontinue hypertonic products abruptly

• 
To reduce contamination, all IV sets should be replaced ≤24 hr

• 
Oral glucose preparations (gel, chew tabs) to be used in conscious patients only; check serum blood glucose 10 min after 1st dose

SIDE EFFECTS

CNS:
Confusion,
loss of consciousness,
dizziness

CV:
Hypertension,
CHF, pulmonary edema, intracranial hemorrhage

ENDO:
Hyperglycemia, rebound hypoglycemia, hyperosmolar syndrome, hyperglycemic nonketotic syndrome, aluminum toxicity, hypokalemia, hypomagnesium

GI:
Nausea

GU:
Glycosuria, osmotic diuresis

INTEG:
Chills, flushing, warm feeling, rash, urticaria, extravasation necrosis

RESP:
Pulmonary edema

INTERACTIONS

Increase:
fluid retention/electrolyte excretion—corticosteroids

Drug/Lab Test

Increase:
glucose

NURSING CONSIDERATIONS
Assess:

• 
Electrolytes (potassium, sodium, calcium, chlorine, magnesium), blood glucose, ammonia, phosphate

• 
Inj site for extravasation: redness along vein, edema at site, necrosis, pain; hard, tender area; site should be changed immediately

• 
Monitor temp for increased fever, indicating infection; if infection suspected, discontinue inf, culture tubing, bottle, catheter tip cultured

• 
Monitor glucose level, I&O, weight, fluid overload

• 
Nutritional status: calorie count by dietitian

Evaluate:

• 
Therapeutic response: increased weight

Teach patient/family:

• 
About the reason for dextrose inf

• 
To review hypoglycemia/hyperglycemia symptoms

• 
To review blood glucose monitoring procedures

Other books

Savage Spirit by Cassie Edwards
Ashes and Memories by Deborah Cox
Fourth Down by Kirsten DeMuzio
Gone The Next by Rehder, Ben
The Quirk by Gordon Merrick
The Stares of Strangers by Jennifer L. Jennings