The increasing number of patients who go to their health care ...

[Collmarie]

The increasing number of patients who go to their health care provider and request a drug they have seen advertised on television or in a magazine has created what continuing challenge to health care providers?
 
  A) Treating infections appropriately
  B) Treating sicker patients
  C) Prescribing cost-effectively
  D) Staying knowledgeable about drug therapy

Question 2

What class of antiarrhythmic agents does the nurse administer to depress generation of the action potentials and delaying phases 1 and 2 of repolarization?
 
  A) Class Ib
  B) Class II
  C) Class III
  D) Class IV

[af]

Answer to Question 1

D
Feedback:
As the marketing power for prescription drugs continues to grow, the health care provider must be constantly aware of what patients are seeing (or reading), what the commercials and ads are promising, and the real data behind the indications and contraindications for these hot drugs. It is a continuing challenge to stay up-to-date and knowledgeable about drug therapy.

Answer to Question 2

D
Feedback:
The class IV antiarrhythmics block the movement of calcium ions across the cell membrane, depressing the generation of action potentials and delaying phases 1 and 2 of repolarization, which slows automaticity and conduction. 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.

[Collmarie]

Excellent

[kthug]

Gracias!