Collins, Via Span, and cardioplegia should not be used for volume expansion because they are:

Collins, Via Span, and cardioplegia should not be used for volume expansion because they are:

• A. Expensive
• B. Hypotonic solutions
• C. Hyperkalemic solutions
• D. Only effective at 4 degrees centigrade

Answer: (C)

The correct answer highlights that Collins, Via Span, and cardioplegia solutions should not be used for volume expansion because they are hyperkalemic solutions. Hyperkalemia refers to an elevated level of potassium in the solution. When these solutions are administered, particularly in high volumes, they can lead to dangerously high potassium levels in the bloodstream. Using a hyperkalemic solution for volume expansion can result in significant clinical complications, such as cardiac arrhythmias or even cardiac arrest, due to the role of potassium in cardiac electrical activity. This makes these solutions suitable for their intended purposes, such as organ preservation, but inappropriate for volume expansion practices where maintaining normal electrolyte balance is critical. The other choices do not accurately describe why these solutions should be avoided for volume expansion: being expensive does not directly impact their suitability for volume expansion; hypotonic solutions would be potentially useful in certain scenarios; and the effectiveness at a specific temperature, while relevant to preservation, does not pertain to their use in volume expansion contexts.

The correct answer highlights that Collins, Via Span, and cardioplegia solutions should not be used for volume expansion because they are hyperkalemic solutions. Hyperkalemia refers to an elevated level of potassium in the solution. When these solutions are administered, particularly in high volumes, they can lead to dangerously high potassium levels in the bloodstream.

Using a hyperkalemic solution for volume expansion can result in significant clinical complications, such as cardiac arrhythmias or even cardiac arrest, due to the role of potassium in cardiac electrical activity. This makes these solutions suitable for their intended purposes, such as organ preservation, but inappropriate for volume expansion practices where maintaining normal electrolyte balance is critical.

The other choices do not accurately describe why these solutions should be avoided for volume expansion: being expensive does not directly impact their suitability for volume expansion; hypotonic solutions would be potentially useful in certain scenarios; and the effectiveness at a specific temperature, while relevant to preservation, does not pertain to their use in volume expansion contexts.