Chapter 19: Reconstitution of Solutions

Chapter 19: Reconstitution of Solutions

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

12. Directions: Prepare the following strength solutions. Describe your calculations.

 

360 mL of 1/4 strength Ensure percutaneous endoscopic (PEG) tube over 4 hours

 

ANS:

 

1/4 ´ 360 mL = 90 mL solute

Amount of solvent (360 mL) – Amount of solute (90 mL) = Amount needed to dissolve (270 mL)

Therefore, you will add 270 mL of water to make 1/4 strength Ensure.

 

PTS:   1                    MSC:  Reconstitution of Solutions

 

13. Directions: Indicate how you would prepare each of the following using full-strength hydrogen peroxide (solute) and normal saline (solvent).

 

300 mL of 3/4 strength for skeletal pin care

 

ANS:

 

3/4 ´ 300 mL = 225 mL (solute)

300 mL – 225 mL = 75 mL (solvent/normal saline)

To make 300 mL of 3/4 strength hydrogen peroxide, mix 225 mL of full-strength hydrogen peroxide and 75 mL of normal saline.

 

PTS:   1                    MSC:  Reconstitution of Solutions

 

14. Directions: Indicate how you would prepare each of the following using full-strength hydrogen peroxide (solute) and normal saline (solvent).

 

8 oz of 1/2 strength for wound care.

 

ANS:

 

8 ´ 1/2 = 4 oz (solute)

8 oz – 4 oz = 4 oz (solvent/normal saline)

To make 8 oz of 1/2 strength hydrogen peroxide, mix 4 oz of full-strength hydrogen peroxide and 4 oz of normal saline.

 

PTS:   1                    MSC:  Reconstitution of Solutions

 

15. Directions: Indicate how you would prepare each of the following using full-strength hydrogen peroxide (solute) and normal saline (solvent).

 

0.24 L of 1/3 strength for wound care

 

ANS:

 

Conversion required.  1 L = 1,000 mL, 0.24 L = 240 mL

1/3 ´ 240 mL = 80 mL (solute)

240 mL – 80 mL = 160 mL (solvent/normal saline)

To make 240 mL of 1/3 strength hydrogen peroxide, mix 80 mL of full-strength hydrogen peroxide and 160 mL of normal saline.

 

PTS:   1                    MSC:  Reconstitution of Solutions