IV question

My question is if a patient is to receive 2500cc'1/2 ns iv bolus for low blood pressure does that mean they receive 2.5 liters and what is a safe rate for a cardiac patient?
There is no set "safe" rate for cardiac patients. I'm assuming you mean patients with a hx of CHF or renal failure. You just have to keep a close eye on their fluid volume status. I have had to give a patient with CHF a fluid bolus but it is much smaller, something like 250ccs as opposed to a full liter or two. And again, keep a close eye on their fluid volume status - assess lung sounds, JVD, look for increased edema, etc. It's like a balancing act with these types of patients.

Homework question? What do you think? Why? Also: What's the difference between 1/2 NS and NS? What difference would this make, and why?

Smells like a homework question.

yes, 2500 ml equal 2.5L. There is a great book called Math for Meds. I still use it to review 10 years after graduation. And the proper amt for cardiac patients is the amt that helps without causing edema in hands and feet, and wet lungs. Now you really have some stuff to look up.In a pinch you can just type 2500cc =L in the search bar of your computer and get the answer.

Just remember that 1/2 NS is hypotonic and you shouldn't really Bolus with it.