Prilocaine

General

• Type: Local anesthetics
• Dosage Forms:
• Common Trade Names:

Maximum Doses of Anesthetic Agents

Agent	Without Epinephrine	With Epinephrine	Duration	Notes
Lidocaine	5 mg/kg (max 300mg)	7 mg/kg (max 500mg)	30-90 min	1% soln contains 10 mg/ml 2% soln contains 20 mg/ml
Mepivicaine	7 mg/kg	8 mg/kg
Bupivicaine	2.5 mg/kg (max 175mg)	3 mg/kg (max 225mg)	6-8 hr	0.5% soln contains 5 mg/ml May cause cardiac arrest if injected intravascularly Do not buffer with bicarbonate
Ropivacaine	3 mg/kg
Prilocaine	6 mg/kg
Tetracaine	1 mg/kg	1.5 mg/kg	3hrs (10hrs with epi)
Procaine	7 mg/kg	10 mg/kg	30min (90min with epi)

Special Populations

• Pregnancy Rating: B
• Lactation: Unknown
• Renal Dosing
  • Adult
  • Pediatric
• Hepatic Dosing
  • Adult
  • Pediatric

Contraindications

• Allergy to class/drug
• Methemoglobinemia

Adverse Reactions

Serious

• Local anesthetic systemic toxicity
• Confusion, disorientation
• Anaphylaxis
• Seizures
• Status asthmaticus

Common

• Anxiety, restlessness
• Dizziness
• Twitching, shivering
• Edema

Pharmacology

• Half-life: 10-150 min
• Metabolism: hepatic and renal
• Excretion: urinary
• Mechanism of Action: Local anesthetic; prevents generation/conduction of nerve impulses by reducing sodium permeability and increasing action potential threshold

See Also

• Local Anesthetic Systemic Toxicity (LAST)