Help with a oz to mil question please

[Wayne47]

The nurse calculates Mary's intake and output (I&O) for the shift. Mary has had 24 ounces of water, 8 ounces of apple juice, and three 4-ounce cartons of milk. She received 50 mL of IV fluids per hour for the last 12 hours and had a urinary output of 1200 mL, plus one episode of wetting the bed.

What is Mary's total intake for this shift?

I tried this problem and got 1901.2ml but it was wrong. I also tried 1902ml, 1901ml. Can anyone help explain to me what I did wrong and help me solve it? I have no idea what I could be doing wrong. The answer must be in milliliters.

[missmollie, ADN, BSN, RN]

You're so close to the right answer. Write out what you did, and I will see if I can help you.

[JustBeachyNurse, LPN]

Approx how many mL are in one ounce?

Then set up your list.

24 oz x ____mL/oz=A mL

3 x 4oz x ____mL/oz =B mL

8oz x _____ mL/oz = C mL

12h x 50mmL/hr = D mL

Total intake = A + B + C + D

You are close.

[mrsboots87]

Since mL to oz is a whole number, I'm thinking maybe you used the incorrect conversion factor. Justbeachy is right on the money. What conversion factor are you using?

[Esme12, ASN, BSN, RN]

know what conversion factors they are using.....here are some site with common ones

Medical Calculations and Conversions

Health Care: Common Conversion Factors

Weight

1 kilogram (kg) = 2.2 pounds (lb) = 1000 g

1 lb = 454 g = .454 kg = 16 oz

kg x 2.2-5 = kg

lb x 0.454 = kg

1 oz = 28.349 g

1 g = 1000 mg

oz = 28.349 = g

g x 0.935 = oz

Liquids

1 oz = 30 milliliters (ml)

1 tbsp = 3 teaspoons (tsp) = 15 ml

1 tsp = 5 ml

2 tbsp = 1 fl oz

4 tbsp = 1/4 c = 2 oz

1 ml = 1 cc

1 cup © = 8 fl. oz = 16 tablespoons (tbsp) = 1/2 pt

2 c = 16 fl oz = 1 pt = 1/2 qt

4 qt = 1 gal

1 L = 1000 ml

Length

1 m = 3.281 ft = 39.37 in.

in. x 25.4 = mm

in. x 2.54 = cm

mm x 0.0394 = in.

cm x 0.394 = in.

ft x 0.305 = m

m x 3.281 = ft

m x 1.094 = yd

yd x 0.914 = m

Volume

US fl gal x 0.833 = UK gal

US fl oz x 1.041 = UK fl oz

US fl oz x 29.572 = ml

l (litre) x 1.056 = US fl qt

US fl qt x 0.947 = l (litre)

[Nolli]

I use mnemonics to help me remember the more common conversion factors since I had problems keeping the numbers straight at first.

30 monkeys laughed at 1 old zebra and if you eat 2 turkeys you are going to need 6 tums

30 mL = 1 oz = 2 Tbsp = 6 tsp

Since both turkeys and tums begin with t you might say it could be confusing, but turkeys are larger than a bunch of tums just like tablespoons are larger than teaspoons.

Hope that helps

[BeachsideRN, ASN]

I use mnemonics to help me remember the more common conversion factors since I had problems keeping the numbers straight at first.

30 monkeys laughed at 1 old zebra and if you eat 2 turkeys you are going to need 6 tums

30 mL = 1 oz = 2 Tbsp = 6 tsp

Since both turkeys and tums begin with t you might say it could be confusing, but turkeys are larger than a bunch of tums just like tablespoons are larger than teaspoons.

Hope that helps

I love mnemonics. Thanks for this!

[KelRN215, BSN, RN]

What were you using as your conversion? You are very close to the correct answer.

[taphouss]

What was the answer????

[Jensmom7, BSN, RN]

Don't muddy the waters, guys-the only formula you need to know for this particular answer is 30ml=1oz.

Just 2 manipulations of that:

___ oz X 30 = ___ ml

___ ml / 30 = ___ oz

Just a little proud of my middle-aged brain; I can still do those problems in my head lol.

[Tigerfly]

1oz=30mL. 32oz water(32x30)=960mL plus 12oz apple juice(12x30)=360mL plus 4oz milk(4x30)=120x3 cartons=360mL for a total of 1680mL of oral fluids. 50mL x 12 =600mL IV fluids. so, 1680mL oral fluids plus 600mL of IV fluids equals 2280mL

Answer 2280

[bambi.123]

I know this is an old post, but the answer is 1920.