Mosby's 2014 Nursing Drug Reference (22 page)

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

HIGH ALERT
adenosine (Rx)

(a-den′oh-seen)

Func. class.:
Antidysrhythmic

Chem. class.:
Endogenous nucleoside

Do not confuse:
adenosine
/adeosine phosphate

ACTION:

Slows conduction through AV node, can interrupt reentry pathways through AV node, and can restore normal sinus rhythm in patients with paroxysmal supraventricular tachycardia

USES:

PSVT, as a diagnostic aid to assess myocardial perfusion defects in CAD, Wolff-Parkinson-White syndrome

Unlabeled uses:
Wide-complex tachycardia diagnosis

CONTRAINDICATIONS:

Hypersensitivity, 2nd- or 3rd-degree AV block, sick sinus syndrome, atrial flutter, atrial fibrillation, ventricular tachycardia, bronchospastic lung disease, symptomatic bradycardia, bundle branch block, heart transplant, unstable angina

Precautions:
Pregnancy (C), breastfeeding, children, geriatric patients, asthma

DOSAGE AND ROUTES
Calculator
Antidysrhythmic

• Adult and child
>
50 kg: IV BOL
6 mg; if conversion to normal sinus rhythm does not occur within 1-2 min, give 12 mg by rapid
IV BOL;
may repeat 12-mg dose again in 1-2 min

• Infant and child
<
50 kg: IV BOL
0.1 mg/kg; if not effective, increase dose by 0.05-0.1 mg/kg q2min to a max of 0.3 mg/kg/dose

• Neonate: IV BOL
0.05 mg/kg by rapid IV BOL, may increase by 0.05 mg/kg q2min, max 0.3 mg/kg/dose

Available forms:
3 mg/ml

Administer:

• 
Warm to room temp; crystals will dissolve

IV, direct route

• 
Undiluted; give 6 mg or less by rapid inj over 1-2 sec; if using an IV line, use port near insertion site, flush with NS (20 ml), then elevate arm

Y-site compatibilities:
abciximab

Solution compatibilities:
D
5
LR, D
5
W, LR, 0.9% NaCl

SIDE EFFECTS

CNS:
Lightheadedness, dizziness, arm tingling, numbness, headache

CV:
Chest pain, pressure,
atrial tachydysrhythmias,
sweating, palpitations, hypotension,
facial flushing
,
AV block, cardiac arrest, ventricular dysrhythmias

GI:
Nausea
, metallic taste

RESP:
Dyspnea, chest pressure
, hyperventilation,
bronchospasm (asthmatics)

PHARMACOKINETICS

Cleared from plasma in <30 sec, half-life 10 sec, converted to inosine/adenosine monophosphate

INTERACTIONS

Increase:
risk for higher degree of heart block—carBAMazepine

Increase:
risk for ventricular fibrillation—digoxin, verapamil

• 
Smoking: increase tachycardia

Increase:
effects of adenosine—dipyridamole

Decrease:
activity of adenosine—theophylline or other methylxanthines (caffeine)

Drug/Herb

Increase:
adenosine effect—ginger

Decrease:
adenosine effect—guarana, green tea

NURSING CONSIDERATIONS
Assess:


 
Cardiopulmonary status:
B/P, pulse, respiration, rhythm, ECG intervals (PR, QRS, QT); check for transient dysrhythmias (PVCs, PACs, sinus tachycardia, AV block)


 
Respiratory status: rate, rhythm, lung fields for crackles, watch for respiratory depression; bilateral crackles may occur in
CHF
patient; increased respiration, increased pulse, product should be discontinued

• 
CNS effects: dizziness, confusion, psychosis, paresthesias, seizures; product should be discontinued

Perform/provide:

• 
Storage at room temperature; sol should be clear; discard unused product

Evaluate:

• 
Therapeutic response: normal sinus rhythm or diagnosis of perfusion defect

Teach patient/family:

• 
To report facial flushing, dizziness, sweating, palpitations, chest pain; usually transient

TREATMENT OF OVERDOSE:

Defibrillation, vasopressor for hypotension, theophylline

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

aflibercept

(a-fli-ber′sept)

EYLEA

Func. class.:
Biologic response modifier; signal transduction inhibitor (STIs) (Ophthalmic)

ACTION:

A recombinant fusion protein consisting of portions of human VEGF receptors 1 and 2 extracellular domains fused to human IgG1; acts as a soluble decoy receptor that binds vascular endothelial growth factor-A (VEGF-A) and placental growth factor (PIGF); can act as mitogenic, chemotactic, vascular permeability factors for endothelial cells; VEGF-A interacts with VEGFR-1 and VEGFR-2 on the surface of endothelial cells; results in neovascularization and vascular permeability; binding of aflibercept to VEGF-A and PIGF prevents activation of these receptors

USES:

For treatment of neovascular (wet) age-related macular degeneration (AMD), macular edema after central retinal vein

CONTRAINDICATIONS:

Hypersensitivity, ocular/periocular infection, active intraocular inflammation

Precautions:
Neonates, infants, children, adolescents, pregnancy (C), breastfeeding; history of glaucoma, ocular surgery; driving or operating machinery

DOSAGE AND ROUTES
Calculator

• Adult:Intravitreal INJ
2 mg (0.05 ml) into affected eye(s) q4wk × 12 wk, then 2 mg (0.05 ml) q8wk

Available forms:
Solution for injection 2 mg/0.05 ml

Administer:
Intravitreal route

• 
Visually inspect for particulate matter, discoloration before use; do not use if particulates, cloudiness, discoloration are visible; only for use by physicians trained in administration

• 
Use controlled aseptic conditions (sterile gloves, sterile drape, sterile eyelid speculum); adequate anesthesia, topical broad-spectrum antiinfective should be given before use

• 
Use each vial for treatment of single eye only; if other eye is being treated, use new vial and change the sterile field, syringe, gloves, drapes, eyelid speculum, filter, injection needles before administering to the other eye

• 
Use aseptic technique, withdraw all of vial contents through a 5-micron 19-G filter needle attached to 1-ml syringe supplied by manufacturer; after vial contents are withdrawn, discard filter needle and replace with sterile 30-G × ½ inch needle for intravitreal injection; expel any air bubbles and contents of syringe until plunger tip is aligned with line that marks 0.05 ml

• 
Immediately after the intravitreal injection, monitor patient for elevation in intraocular pressure (IOP); appropriate monitoring may consist of a check for perfusion of optic nerve head or tonometry; sterile paracentesis needle should be available if required

SIDE EFFECTS

CV:
Thromboembolism, nonfatal stroke, nonfatal myocardial infarction, vascular death

EENT:
Ocular hemorrhage, ocular pain, cataracts, vitreous detachment, vitreous floaters
, conjunctival hyperemia, corneal erosion, detachment of retinal pigment epithelium, injection site pain, foreign body sensation, increased lacrimation, blurred vision, retinal pigment epithelium tear, injection site hemorrhage, blepharedema, corneal edema

SYST:
Hypersensitivity

PHARMACOKINETICS

Absorbed into systemic circulation; present in its unbound form and stable inactive form bound with endogenous VEGF; elimination by binding to free endogenous VEGF; metabolism by proteolysis; terminal half-life in plasma 5-6 days

NURSING CONSIDERATIONS
Assess:

• 
Infection:
monitor for infection during week after injection to permit early treatment of any ocular infection that may develop; proper aseptic injection technique should be used to minimize infection

• 
Increased intraocular pressure:
monitor for acute increases in intraocular pressure within 60 min of injection; sustained increases in intraocular pressure have been reported after repeated intravitreal dosing; monitor intraocular pressure and optic nerve head perfusion, a sterile paracentesis needle should be available

Perform/provide:

• 
Storage: do not freeze, protect from light, refrigerate, store in original package until time of use

Evaluate:

• 
Prevention of further vision loss

Teach patient/family:

 
To seek immediate care if symptoms of endophthalmitis or retinal detachment develop (ocular pain, hyperemia of the conjunctiva, photophobia, blurry vision)

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

albumin, human 5% (Rx)

(al-byoo′min)

Albumarc, Albuminar-5, Albutein 5%, Buminate 5%, Plasbumin-5

albumin, human 25%

Albuminar-25, Albutein 25%,
Buminate 25%, Plasbumin-25

Func. class.:
Plasma volume expander

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