Mosby's 2014 Nursing Drug Reference (334 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

propafenone (Rx)

(pro-paff′e-nown)

Rythmol, Rythmol SR

Func. class.:
Antidysrhythmic (class IC)

ACTION:

Slows conduction velocity; reduces membrane responsiveness; inhibits automaticity; increases ratio of effective refractory period to action potential duration; β-blocking activity

USES:

Sustained ventricular tachycardia, atrial fibrillation (single dose), paroxysmal supraventricular tachycardia (PSVT) prophylaxis, supraventricular dysrhythmias

Unlabeled uses:
Wolff-Parkinson-White (WPW) syndrome

CONTRAINDICATIONS:

2nd/3rd-degree AV block, right bundle branch block, cardiogenic shock, hypersensitivity, bradycardia, uncontrolled CHF, sick-sinus syndrome, marked hypotension, bronchospastic disorders, electrolyte imbalance

Precautions:
Pregnancy (C), breastfeeding, children, geriatric patients, CHF, hypo/hyperkalemia, nonallergic bronchospasm, renal/hepatic disease, hematologic disorders, myasthenia gravis

 

Black Box Warning:

Recent MI, cardiac arrhythmias, QT prolongation, torsades de pointes

DOSAGE AND ROUTES
Calculator

• Adult:
PO
150 mg q8hr; allow 3-4 day interval before increasing dose, max 900 mg/day

Atrial fibrillation

• Adult:
PO
450 or 600 mg as single dose; SR 225 mg q12hr, may increase to 325 q12hr, max 425 mg q12hr

Available forms:
Tabs 150, 225, 300 mg; SR cap 225, 325, 425 mg

Administer:

• 
Do not break, crush, or chew tabs; swallow whole

• 
To hospitalized patients because heart monitoring is required

• 
After hypo/hyperkalemia is corrected

• 
With dosage adjustment q3-4days

• 
Without regard to meals

SIDE EFFECTS

CNS:
Headache, dizziness, abnormal dreams, syncope, confusion,
seizures,
insomnia, tremor, anxiety, fatigue

CV:
Supraventricular dysrhythmia, ventricular dysrhythmia, bradycardia,
prodysrhythmia, palpitations, AV block, intraventricular conduction delay, AV dissociation, hypotension, chest pain,
asystole

EENT:
Blurred vision, altered taste, tinnitus

GI:
Nausea, vomiting
, constipation, dyspepsia, cholestasis, abnormal hepatic studies, dry mouth, diarrhea, anorexia

HEMA:
Leukopenia, agranulocytosis, granulocytopenia, thrombocytopenia,
anemia, bruising

INTEG:
Rash

RESP:
Dyspnea

PHARMACOKINETICS

Peak 3-8 hr, half-life 2-10 hr; metabolized in liver; excreted in urine (metabolite)

INTERACTIONS

Increase:
propafenone effects—CYP1A2, CYP2D6, CYP3A4 inhibitors (protease inhibitors, quiNINE, PARoxetine, saquinavir, erythromycin, azole antifungals, sertraline, tricyclics)

Increase:
QT prolongation—other class IA/IC antidysrhythmics, arsenic trioxide, chloroquine, clarithromycin, droperidol, erythromycin, haloperidol, levomethadyl, methadone, pentamidine, chlorproMAZINE, mesoridazine, thioridazine

Increase:
anticoagulation—warfarin

Increase:
CNS effects—local anesthetics

Increase:
digoxin level—digoxin

Increase:
β-blocker effect—propranolol, metoprolol

Increase:
cycloSPORINE levels—cycloSPORINE

Decrease:
propafenone effect—rifampin, cimetidine, quiNIDine

Drug/Lab Test

Increase:
CPK

NURSING CONSIDERATIONS
Assess:

• 
GI status: bowel pattern, number of stools

 

Black Box Warning:

QT/PR prolongation:
ECG or Holter monitor prior to and during therapy

 

Black Box Warning:

CHF:
dyspnea, jugular venous distention, crackles, edema in extremities, I&O ratio; check for decreasing output; daily weight

• 
CBC, ANA titer, LFTs

• 
Chest x-ray, pulmonary function test during treatment

• 
Lung fields; bilateral crackles, dyspnea, peripheral edema, weight gain; jugular venous distention may occur in patient with CHF

 
Toxicity:
fine tremors, dizziness, hypotension, drowsiness, abnormal heart rate

Evaluate:

• 
Therapeutic response: absence of ventricular dysrhythmias; decreasing recurrence of PAF, PSVT

Teach patient/family:

• 
To avoid hazardous activities until response is known

• 
To report fever, chills, sore throat, bleeding, SOB, chest pain, palpitations, blurred vision

• 
To take tab with food

• 
To carry emergency ID identifying medication and prescriber

• 
To avoid abrupt discontinuation of product; to take as prescribed; not to miss, double doses

TREATMENT OF OVERDOSE:

O
2
, artificial ventilation, defibrillation ECG; administer DOPamine for circulatory depression, diazepam or thiopental for seizures, isoproterenol

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

proparacaine
ophthalmic

 

HIGH ALERT
propofol (Rx)

(pro′poh-fole)

Diprivan, Fresenius Propoven

Func. class.:
General anesthetic

ACTION:

Produces dose-dependent CNS depression by activation of GABA receptor

USES:

Induction or maintenance of anesthesia as part of balanced anesthetic technique; sedation in mechanically ventilated patients

CONTRAINDICATIONS:

Hypersensitivity to this product or soybean oil, egg, benzyl alcohol (some products)

Precautions:
Pregnancy (B), breastfeeding, children, geriatric patients, respiratory depression, severe respiratory disorders, cardiac dysrhythmias, labor and delivery, renal disease, hyperlipidemia

DOSAGE AND ROUTES
Calculator
Anesthesia

• Adult
<
55 yr and asa I/II IV (diprivan or generic):
IV
40 mg q10sec until induction onset, maintenance 100-200 mcg/kg/min or
IV BOL
20-50 mg prn, allow 3-5 min between adjustments; Fresenius Propoven 1%
IV
20-40 q10sec until induction then 3-6 mg/kg/hr

• Child

3 yr or asa I or II:
IV induction:
2.5-3.5 mg/kg over 20-30 sec when not premedicated or lightly premedicated

• Child 2 mo-16 yr maintenance:
IV
125-300 mcg/kg/min, lower dose for ASA III or
IV

ICU sedation

• Adult:
IV
5 mcg/kg/min over 5 min; may increase by 5-10 mcg/kg/min over 5-10 min until desired response (Diprivan or generic): 0.3-4 mg/kg/hr, max 4 mg/kg/hr (Fresenius Propoven)

Available forms:
Inj 10 mg/ml in 20-ml ampule, 50-ml and 100-ml vials

Administer:
IV route

• 
Shake well before use; dilution is not necessary but, if diluted, use only D
5
W to ≥2 mg/ml; give over 3-5 min, titrate to needed level of sedation; use only glass containers when mixing, not stable in plastic; use aseptic technique when transferring from original container

• 
Fresenius Propoven 1%:
dilution is not necessary but, if diluted, use D
5
W or NS to ≥2 mg/ml (max dilution max 1 part Fresenius Propoven/4 parts D
5
W or NS); do not admix; lidocaine can be used to reduce pain at site

• 
May be given by cont inf; give by inf pump

• 
Only with resuscitative equipment available; only by qualified persons trained in anesthesia

Y-site compatibilities:
Acyclovir, alfentanil, aminophylline, ampicillin, aztreonam, bumetanide, buprenorphine, butorphanol, calcium gluconate, CARBOplatin, ceFAZolin, cefoperazone, cefotaxime, cefoTEtan, cefOXitin, ceftizoxime, cefTRIAXone, cefuroxime, chlorproMAZINE, cimetidine, CISplatin, clindamycin, cyclophosphamide, cycloSPORINE, cytarabine, dexamethasone, diphenhydrAMINE, DOBUTamine, DOPamine, doxycycline, droperidol, enalaprilat, ePHEDrine, EPINEPHrine, esmolol, famotidine, fentaNYL, fluconazole, fluorouracil, furosemide, ganciclovir, glycopyrrolate, granisetron, haloperidol, heparin, hydrocortisone, HYDROmorphone, hydrOXYzine, ifosfamide, imipenem/cilastatin, inamrinone, regular insulin, isoproterenol, ketamine, labetalol, levorphanol, lidocaine, LORazepam, magnesium sulfate, mannitol, meperidine, mezlocillin, miconazole, morphine, nafcillin, nalbuphine, naloxone, nitroglycerin, norepinephrine, ofloxacin, PACLitaxel, PENTobarbital, PHENobarbital, piperacillin, potassium chloride, prochlorperazine, propranolol, ranitidine, scopolamine, sodium bicarbonate, sodium nitroprusside, succinylcholine, SUFentanil, thiopental ticarcillin, ticarcillin/clavulanate, vecuronium, verapamil

Solution compatibilities:
if given together via
Y
-site: D
5
W, D
5
LR, LR, D
5
/0.45% NaCl, D
5
/0.2% NaCl

SIDE EFFECTS

CNS:
Involuntary movement, headache, jerking, fever, dizziness, shivering, tremor, confusion, somnolence, paresthesia, agitation, abnormal dreams, euphoria fatigue,
increased intracranial pressure, impaired cerebral flow, seizures

CV:
Bradycardia, hypotension
, hypertension, PVC, PAC, tachycardia, abnormal ECG, ST segment depression,
asystole, bradydysrhythmias

EENT:
Blurred vision, tinnitus, eye pain, strange taste, diplopia

GI:
Nausea, vomiting, abdominal cramping
, dry mouth, swallowing, hypersalivation,
pancreatitis

GU:
Urine retention, green urine, cloudy urine, oliguria

INTEG:
Flushing, phlebitis, hives, burning/stinging at inj site
, rash, pain of extremities

MS:
Myalgia

RESP:
Apnea,
cough, hiccups
, dyspnea, hypoventilation, sneezing, wheezing, tachypnea, hypoxia, respiratory acidosis

SYST:
Propofol infusion syndrome

PHARMACOKINETICS

Onset 15-30 sec, rapid distribution, half-life 1-8 min, terminal half-life 3-12 hr; 70% excreted in urine; metabolized in liver by conjugation to inactive metabolites, 95%-99% protein binding

INTERACTIONS

• 
Do not use within 10 days of MAOIs

Increase:
CNS depression—alcohol, opioids, sedative/hypnotics, antipsychotics, skeletal muscle relaxants, inhalational anesthetics

Drug/Herb

Increase:
propofol effect—St. John’s wort

NURSING CONSIDERATIONS
Assess:

• 
Inj site: phlebitis, burning, stinging

• 
ECG
for changes: PVC, PAC, ST segment changes; monitor VS

• 
Neurologic excitatory symptoms:
movement, tremors, dizziness, LOC, pupil reaction

• 
Allergic reactions: hives

 
Respiratory dysfunction:
respiratory depression, character, rate, rhythm; notify prescriber if respirations are <10/min

• 
Propofol infusion syndrome:
rhabdomyolysis, renal failure, hyperkalemia, metabolic acidosis, cardiac dysrhythmias, heart failure usually between 35 and 93 hr after inf begun at >5 mg/kg/hr for >58 hr

Perform/provide:

• 
Storage in light-resistant area at room temp, use within 6 hr of opening

• 
If transferred from original container to another container, complete inf within 12 hr (Dipravan), 6 hr (generic propofol)

Evaluate:

• 
Therapeutic response: induction of anesthesia

Teach patient/family:

• 
That product will cause dizziness, drowsiness, sedation; to avoid hazardous activities until drug effect wears off

TREATMENT OF OVERDOSE:

Discontinue product; administer vasopressor agents or anticholinergics, artificial ventilation

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