A provider prescribes phenobarbital for a client who has a seizure disorder. The medication has a

long half-life of 4 days. How many times per day should the nurse expect to administer this

medication?

A. One

B. Two

C. Three

D. Four - A. One

(Medications with long half-lives remain at their therapeutic levels between doses for long

periods of time. The nurse should expect to administer this medication once a day.)

A staff educator is reviewing medication dosages and factors that influence medication

metabolism with a group of nurses at an in-service presentation. Which of the following factors

should the educator include as a reason to administer lower medication dosages? (Select all that

apply.)

A. Increased renal secretion

B. Increased medication-metabolizing enzymes

C. Liver failure

D. Peripheral vascular disease

E. Concurrent use of medication the same pathway metabolizes - C. Liver failure

E. Concurrent use of medication the same pathway metabolizes

C. Liver failure decreases metabolism and thus increases the concentration of a medication. This

requires decreasing the dosage.

E. When the same pathway metabolizes two medications, they compete for metabolism, thereby

increasing the concentration of one or both medications. This requires decreasing the dosage of

one or both

A nurse is preparing to administer eye drops to a client. Which of the following actions should

the nurse take? (Select all that apply.)

A. Have the client lie on her side.

B. Ask the client to look up at the ceiling.

C. Tell the client to blink when the drops enter her eye.

D. Drop the medication into the center of the client's conjunctival sac.

E. Instruct the client to close her eye gently after instillation - B. Ask the client to look up at the

ceiling.

D. Drop the medication into the center of the client's conjunctival sac.

E. Instruct the client to close her eye gently after instillation