PHARMacology questions

[whtangl23]

Hi, I'm having problems solving the following problems using DA. If someone could work these out for me so I can see what I'm doing wrong and if my answer is right or wrong. These problems are just practice.

1. Ordered: Colace 25mL p.o. prn for constipation

On hand: Colace 20mg per teaspoon

2. The physician prescribes Dilantin 3/4 gr. by mouth BID for seizure activity. The pharmacy supplies Dilantin 50mg Infatabs

also, my class is suppose to take nursing math competency test next week and I'm nervous about it. I was told its mostly DA was going to be on the test. I have allot of problems figuring the prob out and the conversions. Can someone tell me what to expect? My school uses ATI for everything... If there is some kind of practice for it?

TO ALL THAT ARE ABLE TO HELP!!!

[Fig77]

1. Ordered: Colace 25mL p.o. prn for constipation

On hand: Colace 20mg per teaspoon

Are you sure the question reads Colace 20mg per teaspoon?

2. The physician prescribes Dilantin 3/4 gr. by mouth BID for seizure activity. The pharmacy supplies Dilantin 50mg Infatabs

ordered is 3/4 gr = 0.75 gr = 48.75 mg if 1 gr is 65 mg.

available = 50 mg

Amount = Desired (Ordered) / Available (On hand) X Quantity ( tabs in this case)

=48.75 mg / 50 mg X Infatabs

= 0.975 infatabs = 1 tab

[DolceVita, ADN, BSN, RN]

That Colace one is written strangely.

1 teaspoon = 5mL

So from what they said you would be giving 5 teaspoons of Colace (divide 25mL by 5ml for the no. of teaspoons). If each teaspoon has 20mg of Colace the you have 5 (teaspoons) x 20mg = 100mg of Colace. Therefore, you will be administering 100 mg of Colace.