Spinal anesthesia using procaine has been ordered for a patient ...

[TVarnum]

Spinal anesthesia using procaine has been ordered for a patient prior to revision of the patient's ankle hardware. This drug achieves anesthesia by
 
  A) preventing the influx of sodium into nerve cells.
  B) increasing the action of anticholinesterase in nerve synapses.
  C) antagonizing nociceptors.
  D) agonizing opioid receptors in the CNS.

Question 2

A patient who suffers from asthma is given theophylline. Theophylline will have an increased effect if taken with
 
  A) Ritalin.
  B) atomoxetine (Strattera).
  C) modafinil (Provigil).
  D) caffeine.

[Melissahxx]

Answer to Question 1

A
Feedback:
Procaine decreases the influx of sodium into the nerve cell and depresses depolarization to prevent conduction of the nerve impulse. It does not alter the function of nociceptors, opioid receptors, or anticholinesterase.

Answer to Question 2

D
Feedback:
Caffeine increases the effects of theophylline. Ritalin, Provigil, and Strattera are noted to have this effect.

[TVarnum]

Excellent

[cam1229]

Gracias!