Intake and Output problems

ChristineN, BSN, RN · Mar 21, 2013

any recommendations on a site that offers practice problems on intake and output???

Be more specific what sort of help do you need? If you are trying to find the fluid balance it is just subtracting the larger number from smaller and if the intake is greater than 0 the pt is positive, if output is greater than 0 the pt is negative

Esme12, ASN, BSN, RN · Mar 21, 2013

what exactly do you mean????

EmilyEmily · Mar 21, 2013

1. Client had the following at lunch and use the following equivalents for problems: 1 cup=8oz, 1 glass=4 oz

4oz fruit cocktail, 1 tunafish sandwich, 1/2 cup of tea, 1/4 pt of milk. Total in mL

4oz X 30= 120ml

1/2 X8oz=4 X 30ml=120ml

1/4pt X 500= 125ml

120+120+125=365 mL

the book says the answer is 245 mL. I dont know how they came to this

2. Calculate the following individual items and give the total number of milliliters: 3 popsicles (3 oz each), 1/2 qt iced tea, 1 1/2 glasses water, 12 oz soft drink. Total in mL

9oz X 30=270mL

1/2 qt X 946= 473 mL

1 1/2 glasses of water= 1.5 X 4=6oz X 30= 180 mL

12 oz soft drink= 12 x 30mL= 360 mL

Total = 1283 mL

the book says its 1310 mL.

what am I doing wrong?

CT Pixie, BSN, RN · Mar 21, 2013

1. Client had the following at lunch and use the following equivalents for problems: 1 cup=8oz, 1 glass=4 oz
4oz fruit cocktail, 1 tunafish sandwich, 1/2 cup of tea, 1/4 pt of milk. Total in mL
4oz X 30= 120ml
1/2 X8oz=4 X 30ml=120ml
1/4pt X 500= 125ml
120+120+125=365 mL
the book says the answer is 245 mL. I dont know how they came to this

Ok, well you have 3 sets of mL's (120, 120 and 125). The patient only had tea and milk for a total of 245mL, the fruit cocktail isn't a fluid

I only have few minutes, so I didn't get timet to figure out the 2nd one.

CT Pixie, BSN, RN · Mar 21, 2013

I think the problem lies with the 1/2 quart. There are 32 ounces in a quart, so 1/2 quart would be 16 ounces.

Then you'd have

270mL for popsicle (3*3=9 9x30=270)

480mL for iced tea (16 x 30= 480)

180mL for water (6 x 30=180)

360 for soda (12 x 30= 360)

total of 1290

which is 20mL less than what the answer says..can't figure this one out...grrr! Its probably staring me right in the face and I'm just not seeing it.

morte, LPN, LVN · Mar 21, 2013

Em..check your equivalence (sp) chart....what is an ounce equal in ml? what is a pint equal, etc.

EmilyEmily · Mar 21, 2013

my book says 1 pint equals 500 mL. I'm still getting the wrong answer

morte, LPN, LVN · Mar 21, 2013

now take that and extrapolate that ratio to the rest of the volumes, and you will be closer. I am thinking the book is using the literal ratio of oz to mil, which is sl more than 1 to 30.....in which case you will needs to find that reference.

my book says 1 pint equals 500 mL. I'm still getting the wrong answer

morte, LPN, LVN · Mar 21, 2013

oops, I take back my last post....1 oz is less than 30 ml...29. something....a quart is actually 946, which makes a pint 473. Which really plays havoc with your problems, I dearly wish you luck!

. my book says 1 pint equals 500 mL. I'm still getting the wrong answer

EmilyEmily · Mar 21, 2013

oops, I take back my last post....1 oz is less than 30 ml...29. something....a quart is actually 946, which makes a pint 473. Which really plays havoc with your problems, I dearly wish you luck!

yeah I came up with 473. but I am still getting the total wrong

Music in My Heart · Mar 21, 2013

One reason why I despise American units and wish we'd gone SI back in the 70's when it was proposed and a token effort even made at implementing it (remember the dual-unit road signs?)

There's simply no logic to them.