Question

Which of the following statements is true?

A) Colloid solutions contain large molecular weight proteins or sugars.
B) Lactated Ringer solution contains calcium, but not potassium.
C) CVP is the most reliable measure of fluid status.
D) Urine output is the most reliable measure of fluid status.
E) All of the above are true.

Answer 1

Only the statement that colloid solutions contain large molecular weight proteins or sugars is true. Lactated Ringer's solution contains both calcium and potassium, and neither CVP nor urine output is considered the most reliable measure of fluid status alone.

Step-by-step explanation:

In response to the question about which statements are true, the correct statements are:

• Colloid solutions do contain large molecular weight proteins or sugars. These would include things like albumin in blood plasma, which is important for maintaining osmotic pressure.
• Lactated Ringer solution indeed contains calcium as well as potassium, contrary to the given option which suggests it does not contain potassium.
• Urine output is often used to gauge fluid status, but it is not necessarily the most reliable measure. Various factors such as fluid intake, medications, and disease conditions can affect urine output.
• The central venous pressure (CVP) measurement can be used to assess fluid status, but it is not always the most reliable due to variances in patient conditions and measurement techniques.