Why This Matters for Nursing: "Give no more than 400 mg daily." "Patient must weigh at least 50 kg for this dose." Healthcare is full of ranges and limits. Understanding inequalities helps you interpret orders and stay within safe parameters.
An inequality compares values that are NOT necessarily equal:
| Symbol | Meaning | Example | In Words |
|---|---|---|---|
| < | Less than | x < 5 | x is less than 5 |
| > | Greater than | x > 3 | x is greater than 3 |
| ≤ | Less than or equal to | x ≤ 10 | x is at most 10 |
| ≥ | Greater than or equal to | x ≥ 7 | x is at least 7 |
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