## Math for Nurses: A Pocket Guide to Dosage Calculation and Drug PreparationNow in its Seventh Edition, this pocket guide is a compact, portable, easy-to-use reference for dosage calculation and drug administration. The author uses a step-by-step approach with frequent examples to illustrate problem-solving and practical applications. Coverage includes review of mathematics, measurement systems, and a comprehensive section on dosage calculations. Practice problems throughout the text and end-of-chapter and end-of-unit review questions will aid students' application and recall of material. A handy pull-out card contains basic equivalents, conversion factors, and math formulas. |

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### Contents

Basic Mathematics Review and Refresher | 1 |

Preassessment Test Mathematics Skills Review | 3 |

Common Fractions | 10 |

The Denominator of a Fraction | 11 |

The Numerator of a Fraction | 13 |

Concept of Size | 14 |

Types of Fractions and Value | 16 |

Equivalent or Equal Fractions | 18 |

Packaging and Types of Syringes | 168 |

Dosage Calculations for Medications in the Same System and the Same Unit of Measurement | 171 |

Dosage Calculations for Medications in the Same System but Having Different Units of Measurement | 174 |

Dosage Calculations for Medications in Different Systems | 176 |

Penicillin | 177 |

Intravenous Therapies | 184 |

Electronic Infusion Devices | 187 |

Intravenous Fluids | 188 |

Simplifying or Reducing Fractions to Lowest Terms | 20 |

Finding the Least Common Denominator LCD | 22 |

Conversion | 24 |

Addition of Fractions | 27 |

Addition of Mixed Numbers | 31 |

Subtraction of Fractions | 32 |

Subtraction of Mixed Numbers | 34 |

Multiplication of Fractions | 38 |

Division of Fractions | 40 |

Decimals | 46 |

Comparing Decimal Values | 50 |

Addition of Decimals | 51 |

Subtraction of Decimals | 53 |

Multiplication of Decimals | 54 |

Multiplication by 10 100 or 1000 | 55 |

Division of Decimals | 56 |

Division by 10 100 or 1000 | 58 |

Changing Fractions to Decimals | 60 |

Changing Decimals to Fractions | 62 |

Rounding Off Decimals | 63 |

Percent Ratio and Proportion | 66 |

Percents | 67 |

Fractions and Percents | 68 |

Decimals and Percents | 72 |

Ratio and Proportion | 75 |

Solving for x | 78 |

End of Unit 1 Review | 87 |

Measurement Systems | 95 |

The Metric System | 97 |

Common Rules for Metric Notations | 98 |

Meter Length | 99 |

Converting Within the System | 100 |

Liter Volume | 102 |

Gram Weight | 103 |

The Apothecary System and Household Measurements | 107 |

The Apothecary System | 108 |

Household Measurements | 110 |

Converting Within the Same System | 115 |

Approximate Equivalents and System Conversions | 120 |

Converting Between Systems | 123 |

End of Unit 2 Review | 127 |

Dosage Calculations | 133 |

Medication Labels | 136 |

Reading and Interpreting a Drug Label | 137 |

Oral Dosage Calculations | 147 |

Calculating Oral Dosages | 148 |

Dosage Calculations for Medications in the Same System and the Same Unit of Measurement | 152 |

Dosage Calculations for Medications in the Same System but With Different Units of Measurement | 155 |

Dosage Calculations for Medications in Different Systems | 157 |

Parenteral Dosage Calculations | 167 |

Intravenous Flow Rate | 189 |

Calculating Infusion Time | 191 |

Calculating Milliliters Per Hour for Manual or Electronic Regulation | 193 |

Calculating Milliliters Per Hour for Manual or Electronic Regulation When the Infusion is Less Than 1 Hour | 194 |

Calculating Drops Per Minute | 195 |

Constant Factors | 200 |

Intravenous Therapies CriticalCare Applications | 207 |

Calculating Drug Dosages and Flow Rates Using Either Ratio and Proportion or the Formula Method | 208 |

Calculating Drug Dosages and Flow Rates Using Dimensional Analysis | 213 |

Calculating Flow Rates and Drug Dosage Using Constant Factors | 215 |

Insulin | 223 |

Types of Insulin | 224 |

Insulin Preparations | 225 |

Insulin Syringes | 227 |

Insulin Administration | 228 |

Mixing Two Types of Insulin | 229 |

Heparin Preparation and Dosage Calculations | 237 |

Calculate Heparin for Subcutaneous Injection | 239 |

Calculate Heparin for Intravenous Infusion | 242 |

Calculate Milliliters per Hour | 245 |

Calculate Units per Hour | 247 |

Calculating WeightBased Heparin | 248 |

Pediatric Dosage Calculations and Intravenous Therapy | 255 |

Converting Weight in Pounds to Kilograms | 257 |

Calculate Oral and Parenteral Dosages | 258 |

Calculate Dosages Using Rule Based on Age | 262 |

Calculate Pediatric Flow Rate | 273 |

Calculate Intravenous Medication Dosages | 274 |

Solutions | 285 |

Preparing Injectable Medications Packaged as Powders | 287 |

Preparing an Oral or Enteral Feeding | 291 |

Preparing Topical and Irrigating Solutions | 292 |

End of Unit 3 Review | 294 |

Answers | 303 |

Roman Numerals | 329 |

Rounding Off Decimals | 332 |

Abbreviations and Symbols for Drug Preparation and Administration | 334 |

Intradermal Injections | 338 |

Subcutaneous Injections | 340 |

Intramuscular Injections | 342 |

ZTrack Injections | 344 |

Pediatric Intramuscular Injections | 347 |

Nursing Concerns for Pediatric Drug Administration | 349 |

Nursing Considerations for CriticalCare Drug Administration | 351 |

Nursing Concerns for Geriatric Drug Administration | 353 |

Needleless Intravenous System | 356 |

Temperature Conversions Fahrenheit and Celsius Scales | 358 |

361 | |