Answer:
D.
Explanation:
Nil per os (NPO) means nothing by mouth. It is important to
know if the patient has eaten or drunk anythin prior to surgery to
prevent vomiting and possible aspiration
Well, we know that a lot of the ancient civilizations were first-handedly affected by disease. For example, Native Americans were severely impacted by the spread of pestilence. 90% of their population was completely killed off. I think that would be enough to concern them, don't you think? :P
The answer is D. Treatments decrease pain temporarily and must be repeated
Answer:
231 ml
Explanation:
Let x represent the amo unt of Dextrose 70% in ml and y represent the amount of Dextrose 5% in ml needed to prepare 1,000mL of Dextrose 20%.
Since 1000 ml of Dextrose 20% is needed, hence:
x + y = 1000 (1)
Also 70% Dextrose is mixed with 5% dextrose to produce 20% dextrose. i.e.:
70% of x + 5% of y = 20% of 1000
0.7x + 0.05y = 200 (2)
We have to solve equations 1 and 2 simultaneously.
Let us multiply equation 2 by 20:
14x + y = 4000 (3)
subtract equation 1 from 3:
13x = 3000
x = 231 ml
Put x = 231 in equation 1 to find y:
231 + y = 1000
y = 769 ml
Therefore 231 ml of Dextrose 70% must be mixed with 769 ml of Dextrose 5% to prepare 1,000mL of Dextrose 20%? *
