Lidocaine (WK 1)

Question 1

Lidocaine Class

Answer 1

Antiarrhythmic & Sodium Channel Blocker

Question 2

Lidocaine Indications

Answer 2

V-Tach, Wide Complex Tachycardia w/ pulse, recurrent & refractory V-Fib/Pulseless V-Tach, Pre-intubation in head injuries & pre-treatment of localized pain. Successful defibrillation

Question 3

Lidocaine Contraindications

Answer 3

Supraventricular rhythms or bradycardias & hypersensitivity

Question 4

Lidocaine Action

Answer 4

Depresses the automaticity of the Purkinje fibers to raise the depolarization threshold in the ventricular fibers & decrease tendency to fibrillate.
Cardiovascular- decreased conduction rate & force of contraction, prolongs phase 4 depolarization
CNS- tremors, restlessness, clonic convulsions followed by respiratory depression & failure

Question 5

Lidocaine Side Effects

Answer 5

Sleepy, dizzy, disoriented, convulsions, hypotension, bradycardia, decreased myocardial contraction & increased AV blocks

Question 6

Lidocaine Adult

Answer 6

1 to 1.5 mg/kg IV/IO, 3 to 5 min
Infusion 1 to 4 mg/min @ 4mg/mL concentration
Endotracheal Admin- 2 to 2.5 mg/kg followed by 10mL flush

Question 7

Lidocaine PEDI

Answer 7

1 mg/kg IV/IO, repeat @0.5 to 1 mg/kg/min
For ETT use, increase dose by 2 to 3 times