# The Nursing Math Thread - page 14

A member pm'd me the following question highlighted below. We created this thread for you guys to talk about math, solve math problems, and post math websites that you have found helpful. I was... Read More

1. Thanks. that is the type of information I need.
2. Here are some IV questions for you?
a paediatric patient, 8 years old, weighs 25 kg and height 120 cm
Pt is fasting for a laporoscopy and is scheduled for it at 1100 hrs.
Day 01
Orders: Ampicillin 500 mg IV, give 1hr preop
Gentamicin 80 mg IV, give 1 hr preop
Indomethacin 25 mg supp given 2 hrs preop
Morphine 5 mg IV stat
Naloxone 0.5 m IV for Resp <8 per mins and Sedation =3; repeat q2-3 min 'til awake

she finally goes in for surgery at 1100 hrs, you give her her IV antibiotics, and she returned from ruptured appendix sugery, and the following meds are ordered:
Ampicillin 60 mg IV q 8h
Gentamicin 60 mg IV q 8 hr
Gen levels 3 rd dose
Meperidine 25-50 mg IM/SC q6h or Morphine 2-4 mg IM/SC q3-4 hr
Dimenhydrainate 25 mg PO/IM/supp q 4 hr prn
Indomethacin 25 mg supp BID (0600 hrs and 1800 hrs)
Nalozone 0.5 mg IV fo Respd <8pe mind and Sedation=3; repeat q2-3 min til awake.

Are these medication dosage safe?
And what are some nursing actions in order to safely administer meds?

: )
3. Quote from wondergirlhere
Here are some IV questions for you?
a paediatric patient, 8 years old, weighs 25 kg and height 120 cm
Pt is fasting for a laporoscopy and is scheduled for it at 1100 hrs.
Day 01
Orders: Ampicillin 500 mg IV, give 1hr preop
Gentamicin 80 mg IV, give 1 hr preop
Indomethacin 25 mg supp given 2 hrs preop
Morphine 5 mg IV stat
Naloxone 0.5 m IV for Resp <8 per mins and Sedation =3; repeat q2-3 min 'til awake

she finally goes in for surgery at 1100 hrs, you give her her IV antibiotics, and she returned from ruptured appendix sugery, and the following meds are ordered:
Ampicillin 60 mg IV q 8h
Gentamicin 60 mg IV q 8 hr
Gen levels 3 rd dose
Meperidine 25-50 mg IM/SC q6h or Morphine 2-4 mg IM/SC q3-4 hr
Dimenhydrainate 25 mg PO/IM/supp q 4 hr prn
Indomethacin 25 mg supp BID (0600 hrs and 1800 hrs)
Nalozone 0.5 mg IV fo Respd <8pe mind and Sedation=3; repeat q2-3 min til awake.

Are these medication dosage safe?
And what are some nursing actions in order to safely administer meds?

: )
Not all of these are safe dosages. Look in a nursing drug reference for information on safe administration. This is a thread about math calculation.
4. I have found the book, Calculate with Confidence, by Deborah Gray Morris. It is great, comes with a CD, so you can practice the calculations over and over.
5. These are amazing sites God is so good to all of us.
6. here's some practice problems you can print also some links to others, i haven't checked out the links yet:

7. Any takers? I'm preparing for the TEAS & this one came off of the testprepreview.com site. I can't figure how the correct answer is "A." I'm sorry in advance if this is the wrong thread. I cross posted in another sticky. This thread is very helpful. Thanks, everyone.

10. What is the cost in dollars to steam clean a room W yards wide and L yards long it the steam cleaners charge 10 cents per square foot? A. 0.9WL
B. 0.3WL
C. 0.1WL
D. 9WL
E. 3WL
8. Quote from kitti419
Any takers? I'm preparing for the TEAS & this one came off of the testprepreview.com site. I can't figure how the correct answer is "A." I'm sorry in advance if this is the wrong thread. I cross posted in another sticky. This thread is very helpful. Thanks, everyone.

10. What is the cost in dollars to steam clean a room W yards wide and L yards long it the steam cleaners charge 10 cents per square foot?
A. 0.9WL
B. 0.3WL
C. 0.1WL
D. 9WL
E. 3WL
You need to convert the cost to cents/square yard first. A yard is equal to 3 feet. A square yard is equal to 9 feet (length of 3 feet x width of 3 feet). If you draw a picture, you will easily see that there are 9 square feet in a square yard and at 10 cents a square yard that ends up as 90 cents for a square yard (10 cents for each square foot). Now you can work the problem. . .multiplying the width of the room (W) x the length of the room (L) x the cost to steam clean it in cents/square yard (90 cents) to get the answer.
W X L x 90 cents = 90WL which they turned into a decimal of 0.9WL (Money is usually given in decimals.)
9. Ok. Got another one. I feel like I am onto something thinking John is painting at 1.5 times the rate of Sally, so she is doing 75% of the work or something...but the answer is 2 hours 24 mins, which I don't quite understand.

2. If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? A. 2 hours and 24 minutes
B. 3 hours and 12 minutes
C. 3 hours and 44 minutes
D. 4 hours and 10 minutes
E. 4 hours and 33 minutes
10. if sally can paint a house in 4 hours, and john can paint the same house in 6 hour, how long will it take for both of them to paint the house together?
a. 2 hours and 24 minutes
b. 3 hours and 12 minutes
c. 3 hours and 44 minutes
d. 4 hours and 10 minutes
e. 4 hours and 33 minutes
this is an algebra work problem. the formula for these are set up as follows: 1/4 (what sally can do) + 1/6 (what john can do) = 1/x (what they can do together). solve for x.
1/4 + 1/6 = 1/x
(24) 1/4 + (24) 1/6 = (24) 1/x
6 + 4 = 24/x
10x = 24
x = 24/10
x = 2.4
2.4 = 2 hours, and the .4 multiplied x 60 minutes = 24 minutes, so the answer is 2 hours and 24 minutes
11. This problem is driving me crazy! I don't even know where to begin in terms of setting it up, etc...

Mr. Angus, age 79, is admitted to the hospital with an exacerbation of Congestive Heart Failure. His main IV order is 1500 ml NS with 20mEq KCl to run over 24 hours. He also has a urinary tract infection and is receiving IV antibiotics 100 ml every 6 hours as treatment. He is currently NPO and ordered a fluid restriction of 1500 ml in 24 hours. How much of his primary IV will Mr. Angus receive if the fluid restriction is enforced?

12. Quote from shrimpchips
This problem is driving me crazy! I don't even know where to begin in terms of setting it up, etc...

Mr. Angus, age 79, is admitted to the hospital with an exacerbation of Congestive Heart Failure. His main IV order is 1500 ml NS with 20mEq KCl to run over 24 hours. He also has a urinary tract infection and is receiving IV antibiotics 100 ml every 6 hours as treatment. He is currently NPO and ordered a fluid restriction of 1500 ml in 24 hours. How much of his primary IV will Mr. Angus receive if the fluid restriction is enforced?

Total fluid allowed in 24 hours = 1500 mL
The IV antibiotics are given q6h, or 4 times, in that 24 hour period at 100 mL each time. Each antibiotic infusion contains 100 mL, so 4 x 100 mL each = 400 mL
If only 1500 mL of fluid is allowed in 24 hours and 400 mL of it will be used up giving the antibiotic, that leaves 1500 mL - 400 mL or 1100 mL of the NS with 20 mEq of KCL that can be given in the remaining 24 hours.
13. Quote from Daytonite
Total fluid allowed in 24 hours = 1500 mL
The IV antibiotics are given q6h, or 4 times, in that 24 hour period at 100 mL each time. Each antibiotic infusion contains 100 mL, so 4 x 100 mL each = 400 mL
If only 1500 mL of fluid is allowed in 24 hours and 400 mL of it will be used up giving the antibiotic, that leaves 1500 mL - 400 mL or 1100 mL of the NS with 20 mEq of KCL that can be given in the remaining 24 hours.
That's exactly right. I couldn't have wrote it out better myself!