What class of antiarrhythmics will the nurse administer to the ...

[cookcarl]

What class of antiarrhythmics will the nurse administer to the patient in symptomatic paroxysmal tachycardia because it markedly depresses phase 0 with extreme slowing of conduction?
 
  A) Class Ib
  B) Class Ic
  C) Class II
  D) Class III

Question 2

With the need to protect our environment, what is it now important for the nurse to teach patients to do?
 
  A) Dispose of drugs no longer used on an annual basis.
  B) Flush drugs down the toilet.
  C) Bury unused in the yard.
  D) Throw unused pill bottles in the trash in original containers.

[ttt030911]

Answer to Question 1

B
Feedback:
Class Ic drugs markedly depress phase 0, with a resultant extreme slowing of conduction, but have little effect on the duration of the action potential. As a result, they are indicated for the treatment of paroxysmal tachycardia. Class Ib drugs depress phase 0 somewhat and actually shorten the duration of the action potential. The class II antiarrhythmics are beta-adrenergic blockers that block beta-receptors, causing a depression of phase 4 of the action potential. The class III antiarrhythmics block potassium channels and slow the outward movement of potassium during phase 3 of the action potential, thus prolonging it.

Answer to Question 2

A
Feedback:
Patients should go through their medicine cabinet annually and dispose of drugs no longer used. Unused drugs should not be flushed down the toilet or buried in the yard because they seep into the community water supply. Pills should be removed from their bottle and mixed with an undesirable substance to prevent someone from using the medication if found.

[cookcarl]

Excellent

[cam1229]

TYSM