Lidocaine 2% (Xylocaine)

Question 1

Therapeutic Effects of lidocaine

Answer 1

Suppress ventricular ectopic activity

Decrease excitability of heart muscle & cardiac conduction system

Question 2

Indications for lidocaine

Answer 2

Suppress PVCs
Prevent recurrence of VFib after electric conversion
Treat VTach
Suppress reflex rise in ICP during intubation

Question 3

Contraindications of lidocaine

Answer 3

Allergy to lidocaine or local anesthetics
2nd or 3rd degree heart block
Sinus bradycardia or sinus arrest
Idioventricular rhythm

Question 4

Side Effects of lidocaine

Answer 4

Fall in cardiac output & BP due to decrease force of cardiac contractions & decrease peripheral resistance
Numbness, drowsiness, confusion if given in high doses
Seizures in pt in heart failure

Question 5

Adult Dose of lidocaine

Answer 5

1.5mg/kg IVP then 50mg bolus q20min

1mg/kg IVP prior to intubation of head injured pt

Question 6

Pediatric Dose of lidocaine

Answer 6

VFib: 1mg/kg IVP, IO or ET