Lab values and numerical things

[kgh31386, BSN, MSN, RN]

I noticed that EVERY single book will give a different number for normal lab values. Whether it's electrolytes, CBC, cholesterol, etc etc. Also numbers such as normal urine output, amounts of sleep for kids at certain ages, healing times, and how much of a calorie increase should pregnant women have(i was taught 300 in school, I'm seeing 500 in other places)...how do I know which set of normal lab values or anything measured by number is the correct set?

[PA_CoffeeFreak]

According to Kaplan, even though the lab values may be slightly different when we are tested on the NCLEX they will make the abnormal values obvious so you aren't confused by which lab standard to use.

[kgh31386, BSN, MSN, RN]

I would hope so, but in a practice test I had a question about calorie increase for a pregnant lady. I was taught 300, so I clicked that...no that test said its 500. Just like some people say oxygen first for a MI, others say morphine. I don't always agree with Maslow....

[smn2010, BSN, RN]

That's a new one for me! I have never seen calorie increase of only 300 for pregnant women...always 500.

[NewAggieGrad09]

I was also taught to increase calories by 300 after the first trimester, and 500 calories only for a pregnant adolescent. If breast feeding postpartum, then the mom should eat 500 more cals/day is also what I was taught.