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Apraclonidine
Pronunciation
U.S. Brand Names
Generic Available
Synonyms
Pharmacological Index
Use
Pregnancy Risk Factor
Contraindications
Warnings/Precautions
Adverse Reactions
Drug Interactions
Stability
Mechanism of Action
Pharmacodynamics/Kinetics
Usual Dosage
Monitoring Parameters
Mental Health: Effects on Mental Status
Mental Health: Effects on Psychiatric Treatment
Dental Health: Local Anesthetic/Vasoconstrictor Precautions
Dental Health: Effects on Dental Treatment
Patient Information
Nursing Implications
Dosage Forms

Pronunciation
(a pra KLOE ni deen)

U.S. Brand Names
Iopidine®

Generic Available

Yes


Synonyms
Aplonidine; Apraclonidine Hydrochloride; p-Aminoclonidine

Pharmacological Index

Alpha2 Agonist, Ophthalmic


Use

Prevention and treatment of postsurgical intraocular pressure elevation


Pregnancy Risk Factor

C


Contraindications

Known hypersensitivity to apraclonidine or clonidine


Warnings/Precautions

Closely monitor patients who develop exaggerated reductions in intraocular pressure; use with caution in patients with cardiovascular disease and in patients with a history of vasovagal reactions


Adverse Reactions

1% to 10%:

Central nervous system: Lethargy

Gastrointestinal: Xerostomia

Ocular: Upper lid elevation, conjunctival blanching, mydriasis, burning and itching eyes, discomfort, conjunctival microhemorrhage, blurred vision

Respiratory: Dry nose

<1%: Allergic response, some systemic effects have also been reported including GI, CNS, and cardiovascular symptoms (arrhythmias)


Drug Interactions

Increased effect: Topical beta-blockers, pilocarpine additive intraocular pressure


Stability

Store in tight, light-resistant containers


Mechanism of Action

Apraclonidine is a potent alpha-adrenergic agent similar to clonidine; relatively selective for alpha2-receptors but does retain some binding to alpha1-receptors; appears to result in reduction of aqueous humor formation; its penetration through the blood-brain barrier is more polar than clonidine which reduces its penetration through the blood-brain barrier and suggests that its pharmacological profile is characterized by peripheral rather than central effects.


Pharmacodynamics/Kinetics

Onset of action: 1 hour

Maximum IOP: 3-5 hours


Usual Dosage

Adults: Ophthalmic:

1%: Instill 1 drop in operative eye 1 hour prior to anterior segment laser surgery, second drop in eye immediately upon completion of procedure

Dosing adjustment in renal impairment: Although the topical use of apraclonidine has not been studied in renal failure patients, structurally related clonidine undergoes a significant increase in half-life in patients with severe renal impairment; close monitoring of cardiovascular parameters in patients with impaired renal function is advised if they are candidates for topical apraclonidine therapy

Dosing adjustment in hepatic impairment: Close monitoring of cardiovascular parameters in patients with impaired liver function is advised because the systemic dosage form of clonidine is partially metabolized in the liver


Monitoring Parameters

Closely monitor patients who develop exaggerated reductions in intraocular pressure


Mental Health: Effects on Mental Status

May cause drowsiness


Mental Health: Effects on Psychiatric Treatment

Dry mouth may be exacerbated by concurrent use of psychotropics


Dental Health: Local Anesthetic/Vasoconstrictor Precautions

No information available to require special precautions


Dental Health: Effects on Dental Treatment

No effects or complications reported


Patient Information

May sting on instillation, do not touch dropper to eye; visual acuity may be decreased after administration; night vision may be decreased; distance vision may be altered; read package instructions for insertion


Nursing Implications

Wait 5 minutes between instillation of other ophthalmic agents to avoid washout of previous dose; after topical instillation, finger pressure should be applied to lacrimal sac to decrease drainage into the nose and throat and minimize possible systemic absorption


Dosage Forms

Solution, ophthalmic, as hydrochloride: 0.5% (5 mL); 1% (0.1 mL, 0.25 mL)


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