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Home > Drugs > Tetracaine (monograph)
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Tetracaine (monograph)

https://themeditary.com/drug/tetracaine-monograph-8310.html
Medically Reviewed by Oluni Odunlami, MD TheMediTary.Com | Reviewed: Aug 25, 2023  Additional Content by TheMediTary.Com

Generic name: altacaine

Availability: Prescription only

Pregnancy & Lactation: Risk data not available

Contents
Uses Warnings Before Taking Dosage Side effects Interactions

What is Tetracaine (monograph)?

Introduction

Local anesthetic.

Uses for Tetracaine

Ophthalmic Anesthesia

Applied topically to the eye to produce local anesthesia for diagnostic and therapeutic procedures (e.g., tonometry, gonioscopy, removal of foreign bodies or sutures from the cornea, conjunctival and corneal scraping for diagnostic purposes, paracentesis of the anterior chamber, thorough examination and irrigation of painful injuries, short procedures involving the cornea and conjunctiva).

Rhinolaryngeal Anesthesia

Applied topically to produce anesthesia of the nose and throat.

Used to abolish laryngeal and esophageal reflexes prior to diagnostic procedures (e.g., bronchoscopy, bronchography, esophagoscopy).

Tetracaine Dosage and Administration

Administration

Apply topically to the eye as a 0.5% ophthalmic solution. Apply directly to larynx, trachea, or esophagus as a 0.25 or 0.5% topical solution, or administer via oral inhalation as a nebulized 0.5% solution.

Do not use if solution contains crystals or is cloudy or discolored.

Ophthalmic Administration

Apply 0.5% ophthalmic solution topically to eye. For topical anesthesia only; do not inject. Not for self-medication.

May add epinephrine 0.1% to produce vascular constriction when necessary.

Do not touch eyelids or surrounding area with dropper tip.

Do not touch or rub eye until the anesthetic effect has worn off.

Rhinolaryngeal Administration

Apply directly to larynx, trachea, or esophagus as a 0.25 or 0.5% topical solution, or administer via oral inhalation as a nebulized 0.5% solution.

Commercially available 2% topical solution contains FD&C blue No. 1 to guard against accidental injection.

To avoid rapid absorption and high blood levels, do not administer in a coarse stream or by forceful injection.

Manufacturer recommends adding 0.06 mL epinephrine 0.1% to each mL of anesthetic solution to retard absorption.

Use care when measuring dose; measure dose accurately in every instance. (See Systemic Toxicity under Cautions.)

Dosage

Available as tetracaine hydrochloride; dosage expressed in terms of the salt.

Use the lowest dose resulting in effective anesthesia. (See Systemic Toxicity under Cautions.)

Adults

Ophthalmic Anesthesia
Ophthalmic Topical

Short-duration procedures: Instill 1–2 drops just prior to evaluation.

Minor surgical procedures: Instill 1–2 drops every 5–10 minutes for 1–3 doses.

Prolonged anesthesia: Instill 1–2 drops every 5–10 minutes for 3–5 doses.

Not for prolonged use.

Rhinolaryngeal Anesthesia
Rhinolaryngeal Topical

Administer as a 0.25 or 0.5% topical solution directly to larynx, trachea, or esophagus (total absorbed dose ≤20 mg).

Oral Inhalation

Administer as a nebulized 0.5% solution (total absorbed dose ≤20 mg).

Prescribing Limits

Adults

Rhinolaryngeal Anesthesia
Rhinolaryngeal Topical or Oral Inhalation

Maximum total absorbed dose: 20 mg (8 mL of a 0.25% solution or 4 mL of a 0.5% solution).

Special Populations

Geriatric, Debilitated, or Acutely Ill Patients

Manufacturer recommends reduced doses commensurate with weight, age, and physical status; however, no specific dosage recommendations at this time. (See Systemic Toxicity under Cautions.)

Warnings

Contraindications

  • Known hypersensitivity to tetracaine or other local anesthetics of the ester type, to p-aminobenzoic acid or its derivatives, or to any ingredient in the formulation.

  • Self-administration of ophthalmic solution by patients without clinician supervision.

Warnings/Precautions

Warnings

Systemic Toxicity

Rarely, use of local anesthetics causes reactions resulting in death. When a local anesthetic is used (e.g., tetracaine for rhinolaryngeal anesthesia), ensure immediate availability of resuscitative equipment and drugs. Excessive doses or rapid absorption may produce serious or fatal reactions. (See Administration and also Prescribing Limits under Dosage and Administration).

Systemic reactions following rhinolaryngeal administration may involve the CNS (e.g., excitation, depression, nervousness, dizziness, blurred vision, tremors, drowsiness, convulsions, unconsciousness, respiratory arrest) and cardiovascular system (e.g., myocardial depression, BP changes [typically hypotension], cardiac arrest).

Fatal reactions may occur even in the absence of a history of hypersensitivity. (See Hypersensitivity Reactions under Cautions.)

Following ophthalmic administration, systemic toxicity (mainly CNS stimulation followed by depression) occurs very rarely.

Use caution when administering to patients with abnormal or reduced levels of plasma esterases.

Prolonged Ophthalmic Use

Avoid prolonged use of ophthalmic solution. Corneal epithelial erosions, retardation or prevention of healing of corneal erosions, severe keratitis, and permanent corneal opacification and scarring with accompanying reduction of visual acuity or visual loss have occurred.

Ocular Effects

Protect anesthetized eye from irritating chemicals, foreign bodies, and rubbing to prevent corneal and conjunctival damage.

Rarely, local idiosyncratic reactions (e.g., lacrimation, photophobia, chemosis) may occur.

Serious Adverse Effects associated with Local Anesthetics

Risk of serious adverse effects (e.g., seizures, coma, irregular heart beat, respiratory depression) with use of topical local anesthetics; generally reported following application of extemporaneously prepared topical preparations containing high concentrations of anesthetics.

Potential for life-threatening adverse effects (e.g., irregular heart beat, seizures, breathing difficulties, coma, death) when topical local anesthetics are applied to a large area of skin, when the area of application is covered with an occlusive dressing, if a large amount of topical anesthetic is applied, if the anesthetic is applied to irritated or broken skin, or if the skin temperature increases (from exercise or use of a heating pad).

Lidocaine 4% gel has been investigated to reduce discomfort during mammography. Whether such use could result in serious reactions has not been determined. Patients should speak with their clinician if they are considering using a topical anesthetic before obtaining a mammogram.

When a topical anesthetic is needed for a procedure, use of an FDA-approved preparation has been recommended. Use a preparation containing the lowest concentration of anesthetic likely to be effective; apply a small amount of the preparation to the affected area for the shortest period necessary for the desired effect, and do not apply to broken or irritated skin.

Sensitivity Reactions

Hypersensitivity Reactions

Following ophthalmic administration, rare, severe, immediate allergic corneal reaction reported (acute diffuse epithelial keratitis with filament formation and/or sloughing of large areas of necrotic epithelium, diffuse stromal edema, descemetitis, and iritis). Discontinue use if signs or symptoms of allergy or sensitivity occur.

Following rhinolaryngeal administration, systemic allergic reactions may occur (e.g., cutaneous lesions [e.g., urticaria], edema, other allergic manifestations); possibly caused by hypersensitivity, idiosyncrasy, or diminished tolerance. Skin testing is of limited value in detecting sensitivity.

Rarely, severe allergic reactions, including anaphylaxis, have occurred following rhinolaryngeal administration; not typically dose related.

Specific Populations

Pregnancy

Category C.

Lactation

Not known whether tetracaine is distributed into milk. Use caution.

Pediatric Use

Safety and efficacy of ophthalmic and topical solutions not established.

Common Adverse Effects

Ophthalmic topical: Stinging, burning, conjunctival redness.

How should I use Tetracaine (monograph)

Administration

Apply topically to the eye as a 0.5% ophthalmic solution. Apply directly to larynx, trachea, or esophagus as a 0.25 or 0.5% topical solution, or administer via oral inhalation as a nebulized 0.5% solution.

Do not use if solution contains crystals or is cloudy or discolored.

Ophthalmic Administration

Apply 0.5% ophthalmic solution topically to eye. For topical anesthesia only; do not inject. Not for self-medication.

May add epinephrine 0.1% to produce vascular constriction when necessary.

Do not touch eyelids or surrounding area with dropper tip.

Do not touch or rub eye until the anesthetic effect has worn off.

Rhinolaryngeal Administration

Apply directly to larynx, trachea, or esophagus as a 0.25 or 0.5% topical solution, or administer via oral inhalation as a nebulized 0.5% solution.

Commercially available 2% topical solution contains FD&C blue No. 1 to guard against accidental injection.

To avoid rapid absorption and high blood levels, do not administer in a coarse stream or by forceful injection.

Manufacturer recommends adding 0.06 mL epinephrine 0.1% to each mL of anesthetic solution to retard absorption.

Use care when measuring dose; measure dose accurately in every instance. (See Systemic Toxicity under Cautions.)

Dosage

Available as tetracaine hydrochloride; dosage expressed in terms of the salt.

Use the lowest dose resulting in effective anesthesia. (See Systemic Toxicity under Cautions.)

Adults

Ophthalmic Anesthesia
Ophthalmic Topical

Short-duration procedures: Instill 1–2 drops just prior to evaluation.

Minor surgical procedures: Instill 1–2 drops every 5–10 minutes for 1–3 doses.

Prolonged anesthesia: Instill 1–2 drops every 5–10 minutes for 3–5 doses.

Not for prolonged use.

Rhinolaryngeal Anesthesia
Rhinolaryngeal Topical

Administer as a 0.25 or 0.5% topical solution directly to larynx, trachea, or esophagus (total absorbed dose ≤20 mg).

Oral Inhalation

Administer as a nebulized 0.5% solution (total absorbed dose ≤20 mg).

Prescribing Limits

Adults

Rhinolaryngeal Anesthesia
Rhinolaryngeal Topical or Oral Inhalation

Maximum total absorbed dose: 20 mg (8 mL of a 0.25% solution or 4 mL of a 0.5% solution).

Special Populations

Geriatric, Debilitated, or Acutely Ill Patients

Manufacturer recommends reduced doses commensurate with weight, age, and physical status; however, no specific dosage recommendations at this time. (See Systemic Toxicity under Cautions.)

More about Tetracaine (monograph) (Altacaine)

Tetracaine (monograph) Side Effects
Tetracaine Ophthalmic Solution Prescribing Information
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Side effects
Drug class: Drugs
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Contents
Uses Warnings Before Taking Dosage Side effects Interactions
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