An elderly patient has begun taking bisoprolol (Zebeta) 10 mg PO ...

[cartlidgeashley]

An elderly patient has begun taking bisoprolol (Zebeta) 10 mg PO once daily for the treatment of angina. The nurse should administer this drug in the knowledge that it achieves a therapeutic effect in what way?
 
  A) Decreasing heart rate
  B) Increasing the force of myocardial contractions
  C) Prolonging the QT interval
  D) Shortening the time required for repolarization

Question 2

A patient is having seizure activity, and the physician has ordered diazepam (Valium) to be given parenterally. If this medication is administered intravenously, when will its onset of action be observed?
 
  A) 1 to 5 minutes
  B) 7 to 10 minutes
  C) More than 10 minutes
  D) Less than 1 minute

[at]

Answer to Question 1

A
Feedback:
Bisoprolol reduces the workload of the heart and decreases myocardial oxygen demand by decreasing heart rate and the force of myocardial contractions. It does not prolong the QT interval or shorten the time required for repolarization.

Answer to Question 2

A
Feedback:
Intravenous diazepam (Valium) is administered intravenously to decrease seizure activity and has a 1- to 5-minute onset of action. Diazepam (Valium) decreases seizure activity in less than 7 to 10 minutes. Diazepam (Valium) should decrease seizure activity in less than 10 minutes. Diazepam (Valium) will take more than 1 minute to begin working.

[cartlidgeashley]

TYSM

[CAPTAINAMERICA]

Gracias!