Crystalloids

Question 1

what are crystalloid fluids?

Answer 1

1. low molecular weight solutions of water with electrolytes

Question 2

Name 3 crystalloid fluid?

Answer 2

1. Saline
2. Dextrose / Dextrose + Saline
3. Ringer’s lactate - Hartmann’s
4. Plasma

Question 3

Saline and how is it used?

Answer 3

1. 0.9% normal saline
2. cheapest and most widespread use
3. used in fluid resusicitation

Question 4

What does Saline contain

Answer 4

Replace sodium and chloride alone

1. Na 154 mmol/l
2. CL 154 mmol/l
3. no other electrolytes

Question 5

What does Dextrose contain and how is it used?

Answer 5

1. essentially sugar +water
2. Just water thus can travel between intracellular and extracellular compartments
3. used for maintainence fluids

Question 6

who should dextrose not be used in\/

Answer 6

diabetes mellitus

Question 7

Harmann’s solution and how is it used?

Answer 7

more physiological/isotonic solution
minimic plasma
fluid replacement in post operative period

Question 8

What does Hartmann’s solution contain?

Answer 8

1. Na 130 mmol/l
2. CL 109 mmol/l
3. 4 mmol/l potassium
4. Ca 1.5 mmol/l
5. Lactate

Question 9

which body compartment do crystalloid solutions affect?

Answer 9

EXTRAVASCULAR MAINLY

1. pass freely between intravascular and interstitial space
2. remain in the vascular space for a short time - mainly in interstitial fluid

Question 10

what is the risk with crystalloid solutions?

Answer 10

risk of interstitial oedema