Is sodium chloride the same as normal saline?

Sodium chloride is a common chemical substance widely present in nature and daily life. To address the question "Is sodium chloride the same as normal saline," the following points need to be clarified:

1. In medical terms, normal saline refers to a sodium chloride solution with an osmotic pressure approximately equal to that of human plasma. Its concentration is typically 0.9%. This solution can maintain the normal shape of cells, preventing them from rupturing due to excessive water intake or shrinking due to excessive water loss.

2. Sodium chloride solutions come in various concentrations, but only a specific concentration—0.9% sodium chloride solution—is referred to as normal saline.

3. Sodium chloride itself is not equivalent to normal saline but is the main component of normal saline.

Patients should strictly follow medical instructions when using any medical supplies or medications, ensuring the correct solution concentration is used to avoid adverse effects on the body.