Mosby's 2014 Nursing Drug Reference (201 page)

guaiFENesin (
OTC
, Rx)

(gwye-fen′e-sin)

Alfen, Altarussin, Balminil
, Bidex, Diabetic Tussin, Elix Sure EX, Equaline Non-Drowsy Tussin, Equate Tussin Cough, Good Sense Mucus Relief, Good Sense Tussin Chest Congestion, Guaifenesin NR, Guiatuss, Humibid, Iophen NR, Liquibid, Miltuss EX, Mucinex, Mucinex Children’s Mucus Relief, Mucinex Junior Strength, Naldecon Senior EX, Organ-1NR, Organidin NR, Q-Tussin, Robafen, Scot-Tussin Expectorant, Siltussin DAS, Siltussin SA, Top Care Children’s Mucus Relief, Top Care Tussin Chest Congestion Solution, Wal-Tussin Expectorant, XPect

Func. class.:
Expectorant

ACTION:

Increases the volume and reduces the viscosity of secretions in the trachea and bronchi to facilitate secretion removal

USES:

Productive and nonproductive cough

CONTRAINDICATIONS:

Hypersensitivity; chronic, persistent cough

Precautions:
Pregnancy (C), breastfeeding, CHF, asthma, emphysema, fever

DOSAGE AND ROUTES
Calculator

• Adult and adolescent:
PO
200-400 mg q4hr;
EXT REL
600-1200 mg q12hr, max 2.4 g/day

• Child 6-11 yr:
PO
100-200 mg q4hr;
EXT REL
600 mg q12hr, max 1.2 g/day

• Child 2-5 yr:
PO
50-100 mg q4hr; max 600 mg/day; ext rel 300 mg q12hr, max 600 mg/day

Available forms:
Tabs 200, 400 mg; oral sol 100 mg/5 ml; ext rel tabs 600, 1200 mg; syrup 100 mg/5 ml; oral granules 50, 100 mg/packet

Administer:

• 
Do not break, crush, chew ext rel tabs

SIDE EFFECTS

CNS:
Drowsiness, headache, dizziness

GI:
Nausea, anorexia, vomiting, diarrhea

PHARMACOKINETICS

Half-life 1 hr, excreted in urine (metabolites)

NURSING CONSIDERATIONS
Assess:

• 
Cough:
type, frequency, character, including sputum; fluids should be increased to 2 L/day

Perform/provide:

• 
Storage at room temp

• 
Increased fluids, room humidification to liquefy secretions

Evaluate:

• 
Therapeutic response: productive cough, thinner secretions

Teach patient/family:

• 
To avoid driving, other hazardous activities if drowsiness occurs (rare)

• 
To avoid smoking, smoke-filled room, perfumes, dust, environmental pollutants, cleansers

• 
To consult health provider if cough lasts >7 days

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

halcinonide topical

 

haloperidol (Rx)

(hal-oh-pehr′ih-dol)

haloperidol decanoate (Rx)

Haldol Decanoate

haloperidol lactate (Rx)

Haldol

Func. class.:
Antipsychotic, neuroleptic

Chem. class.:
Butyrophenone

Do not confuse:
haloperidol
/Halotestin

ACTION:

Depresses cerebral cortex, hypothalamus, limbic system, which control activity and aggression; blocks neurotransmission produced by DOPamine at synapse; exhibits strong α-adrenergic, anticholinergic blocking action; mechanism for antipsychotic effects unclear

USES:

Psychotic disorders, control of tics, vocal utterances in Gilles de la Tourette’s syndrome, short-term treatment of hyperactive children showing excessive motor activity, prolonged parenteral therapy in chronic schizophrenia, organic mental syndrome with psychotic features, hiccups (short-term), emergency sedation of severely agitated or delirious patients, ADHD

Unlabeled uses:
Nausea, vomiting during surgery; autism; migraine

CONTRAINDICATIONS:

Children <3 yr, hypersensitivity, blood dyscrasias, coma, brain damage, bone marrow depression, alcohol and barbiturate withdrawal states, Parkinson’s disease, angina, epilepsy, urinary retention, closed-angle glaucoma

Precautions:
Pregnancy (C), breastfeeding, geriatric patients, seizure disorders, hypertension, pulmonary/cardiac/hepatic disease, QT prolongation, torsade de pointes

 

Black Box Warning:

Increased mortality in elderly patients with dementia-related psychosis

DOSAGE AND ROUTES
Calculator
Acute psychosis

• Adult:
IM/IV
(lactate) 2-10 mg, may repeat q1hr, convert to
PO
as soon as possible,
PO
should be 150% of total parenteral dose required

• Child 6-12 yr:
IM/IV
(lactate) (unlabeled) 1-3 mg q4-8hr, max 0.15 mg/kg/day, switch to
PO
as soon as possible

Chronic schizophrenia

• Adult:
IM
(decanoate) 50-100 mg q4wk, max 100 mg for 1st inj

• Child 3-12 yr:
PO/IM
0.05-0.15 mg/kg/day

Tourette’s syndrome

• Adult and adolescent:
PO
0.5-2 mg bid-tid, increase until desired response occurs

• Child 3-12 yr or weighing 15-40 kg:
PO
0.25-0.5 mg/day in 2-3 divided doses, increase by 0.25-0.5 mg q5-7days, max 0.15 mg/kg/day

ADHD

• Child 3-12 yr:
PO
0.25-0.5 mg/day in 2-3 divided doses, may increase by 0.025-0.5 mg q5-7days; maintenance 0.01-0.03 mg/kg/day as a single dose

Autism (unlabeled)

• Child:
PO
0.04 mg/kg/day or 1-3 mg/day, max 4 mg/day

Migraine (unlabeled)

• Adult:
PO/IM
(lactate) 5 mg at onset, may repeat once

Available forms:
Tabs 0.5, 1, 2, 5, 10, 20 mg;
lactate:
oral sol 2 mg/ml; inj 5 mg/ml,
decanoate:
50 mg/ml, 100 mg/ml

Administer:

• 
Reduced dose to geriatric patients

• 
Antiparkinsonian agent if EPS occurs

• 
Avoid use with CNS depressants

PO route

• 
Oral liquid:
use calibrated device; do not mix in coffee or tea

• 
PO with food or milk

• 
Avoid skin contact with oral suspension or solution—may cause contact dermatitis

IM route

• 
IM inj into large muscle mass, use 21G, 2-in needle; give no more than 3 ml/inj site; patient should remain recumbent for 30 min

IV route (lactate)

• 
Give undiluted for psychotic episode at 5 mg/min

• 
Only use lactate for IV

Intermittent IV INF route

• 
Dilute in 30-50 ml of D
5
W, give over 30 min

Y-site compatibilities:
Amifostine, amsacrine, cisatracurium, cladribine, DOXOrubicin liposome, filgrastim, fludarabine, granisetron, LORazepam, melphalan, milrinone, PACLitaxel, palonosetron, pamidronate, pancuronium, propofol, remifentanil, riTUXimab, rocuronium, tacrolimus, teniposide, thiotepa, tigecycline, tirofiban, TPN, trastuzumab, vecuronium, vinCRIStine, vinorelbine, voriconazole, zoledronic acid

SIDE EFFECTS

CNS:
EPS: pseudoparkinsonism, akathisia, dystonia, tardive dyskinesia, drowsiness, headache
,
seizures, neuroleptic malignant syndrome,
confusion

CV:
Orthostatic hypotension
, hypertension,
cardiac arrest,
ECG changes,
tachycardia, QT prolongation, sudden death, torsades de pointes

EENT:
Blurred vision, glaucoma, dry eyes

GI:
Dry mouth, nausea, vomiting, anorexia, constipation
, diarrhea, jaundice, weight gain,
ileus, hepatitis

GU:
Urinary retention, dysuria, urinary frequency, enuresis, impotence, amenorrhea, gynecomastia

INTEG:
Rash
, photosensitivity, dermatitis

RESP:
Laryngospasm,
dyspnea,
respiratory depression

SYST:
Risk for death (dementia)

PHARMACOKINETICS

Metabolized by liver; excreted in urine, bile; crosses placenta; enters breast milk; protein binding 92%; terminal half-life 12-36 hr (metabolites)

PO:
Onset erratic, peak 2-6 hr, half-life 24 hr

IM:
Onset 15-30 min, peak 15-20 min, half-life 21 hr

IM (Decanoate):
Peak 4-11 days, half-life 3 wk

INTERACTIONS

Increase:
serotonin syndrome, neuroleptic malignant syndrome—SSRIs, SNRIs

Increase:
QT prolongation—class IA, III antidysrhythmics, tricyclics, amoxapine, maprotiline, phenothiazines, pimozide, risperiDONE, sertindole, ziprasidone, β-blockers, chloroquine, cloZAPine, dasatinib, dolasetron, droperidol, dronedarone, flecainide, halogenated/local anesthetics, lapatinib, methadone, erythromycin, telithromycin, troleandomycin, octreotide, ondansetron, palonosetron, pentamidine, propafenone, ranolazine, SUNItinib, tacrolimus, vardenafil, vorinostat, usually with IV use

Increase:
oversedation—other CNS depressants, alcohol, barbiturate anesthetics

Increase:
toxicity—EPINEPHrine, lithium

Increase:
both drugs effects—β-adrenergic blockers, alcohol

Increase:
anticholinergic effects—anticholinergics

Decrease:
effects—lithium, levodopa

Decrease:
haloperidol effects—PHENobarbital, carBAMazepine

Drug/Lab Test

Increase:
LFTs

NURSING CONSIDERATIONS
Assess:

• 
Prolactin, CBC, urinalysis, ophthalmic exam before and during prolonged therapy

 

Black Box Warning:

Dementia, affect, orientation, LOC, reflexes, gait, coordination, sleep pattern disturbances, risk for death in dementia-related psychosis

• 
B/P standing, lying; take pulse, respirations q4hr during initial treatment; establish baseline before starting treatment; report drops of 30 mm Hg

• 
Dizziness, faintness, palpitations, tachycardia on rising

• 
EPS
including akathisia (inability to sit still, no pattern to movements), tardive dyskinesia (bizarre movements of jaw, mouth, tongue, extremities), pseudoparkinsonism (rigidity, tremors, pill rolling, shuffling gait)

 
Neuroleptic malignant syndrome/serotonin syndrome:
hyperthermia, muscle rigidity, altered mental status, increased CPK, seizures, hypo/hypertension, tachycardia; notify prescriber immediately

• 
Constipation, urinary retention daily; if these occur, increase bulk, water in diet

• 
Abrupt discontinuation:
do not withdraw abruptly, taper

• 
QT prolongation:
more common with IV use at high doses; monitor ECG in those with CV disease

Perform/provide:

• 
Supervised ambulation until patient stabilized on medication; do not involve patient in strenuous exercise program, fainting is possible; patient should not stand still for long periods

• 
Sips of water, sugarless candy, gum for dry mouth

• 
Storage in tight, light-resistant container

Evaluate:

• 
Therapeutic response: decrease in emotional excitement, hallucinations, delusions, paranoia, reorganization of patterns of thought, speech; improvement in specific behaviors

Teach patient/family:

• 
That orthostatic hypotension occurs often; to rise from sitting or lying position gradually; to remain lying down after IM inj for at least 30 min

• 
To avoid hazardous activities until stabilized on medication and effects are known

• 
To avoid abrupt withdrawal of this product because EPS may result; to withdraw slowly

• 
To avoid OTC preparations (cough, hay fever, cold) unless approved by prescriber, serious product interactions may occur; to avoid use with alcohol, increased drowsiness may occur

• 
About EPS and necessity of meticulous oral hygiene because oral candidiasis may occur

• 
To report impaired vision, jaundice, tremors, muscle twitching

TREATMENT OF OVERDOSE:

Activated charcoal, lavage if orally ingested; provide an airway; do not induce vomiting

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