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Drug calculations for nurses: a step-by-step approach

By: Lapham, Robert.
Publisher: Boca Raton, FL : CRC Press, Taylor & Francis Group, 2015Edition: 4th ed.Description: xxvi, 308 p. : illustrations ; 20 cm.ISBN: 9781482248456; 9781138707016 .Subject(s): Nursing - Mathematics | Pharmaceutical arithmetic - Problems, exercises, etc | Nursing - Mathematics - Problems, exercises, etc | Pharmaceutical arithmetic | Drug Dosage CalculationsDDC classification: WY100.4 Summary: The administration of drug treatments in hospitals has become increasingly complex. It sometimes involves potent drugs that may be fatal if administered incorrectly. The ability to perform drug calculations accurately is therefore paramount to prevent placing patients at risk.Drug Calculations for Nurses: A Step-by-Step Approach teaches healthcare professionals how to perform drug calculations with confidence and competence. It provides step-by-step guidance to carry out accurate drug calculations, with units and drug strengths clearly explained.
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Contents:

pt. I. Mathematics. 1. Basics : Arithmetic symbols ; Basic maths ; Rules of arithmetic ; Fractions and decimals ; Roman numerals ; Powers or exponentials --
2. First principles : Sense of number and the use of calculators or formulae ; Estimation of answers ; The 'one unit' rule ; Checking your answer, does it seem reasonable? ; Putting it all together ; Minimizing errors --
3. Per cent and percentages : Per cent and percentages ; Converting fractions to percentages and vice versa ; Converting decimals to percentages and vice versa ; Calculations involving percentages ; Drug calculations involving percentages ; How to use the per cent key on your calculator --
4. Units and equivalences : SI units ; Prefixes used in clinical practice ; Equivalences ; Conversion from one unit to another ; Guide to writing units --
5. Moles and millimoles : What are moles and millimoles? ; Millimoles and micromoles --
6. Drug strengths or concentrations : Percentage concentration ; mg/mL concentrations ; 'I in ... ' concentrations or ratio strengths ; Parts per million (ppm) ; Drugs expressed in units --
pt. II. Performing calculations. 7. Dosage calculations : Calculating the number of tablets or capsules required ; Drug dosages based on patient parameters ; Ways of expressing doses ; Calculating drug dosages ; Displacement values or volumes ; Prescriber calculations --
8. Infusion rate calculations : Drip rate calculations (drops/min) ; Conversion of dosages to mL/hour ; Conversion of mL/hour back to a dose ; Calculating the length of time for IV infusions --
pt. III. Administering medicines. 9. Intravenous therapy and infusion devices : IV infusion therapy ; Answers ; Infusion devices ; Infusion device classification --
10. Action and administration of medicines : Action and administration of medicines ; Pharmacokinetics and pharmacodynamics ; Administration of medicines ; Promoting the safer use of injectable medicines --
11. Children and medicines : Drug handling in children ; Pharmacodynamics ; Routes of administration of drugs ; Practical implications ; Useful reference books ; Approximate values useful in the calculation of doses in children --
12. The elderly and medicines : Drug handling in the elderly ; Specific problems in the elderly ; General principles --
13. Sources and interpretation of drug information : Sources of drug information ; The internet ; Summary of product characteristics (SPC) --
Revision test : Basics ; Per cent and percentages ; Units and equivalences ; Drug strengths or concentrations ; Dosage calculations ; Infusion rate calculations ; Compare your scores ; Answers to problems --
Answers to problems set in chapters : Per cent and percentages ; Units and equivalences ; Moles and millimoles ; Drug strengths or concentrations ; Dosage calculations ; Infusion rate calculations ; Action and administration of medicine --
Appendices : Body surface area (BSA) estimates ; Weight conversion tables ; Height conversion tables ; Calculation of body mass index (BMI) ; Estimation of renal function ; Abbreviations used in prescriptions.


The administration of drug treatments in hospitals has become increasingly complex. It sometimes involves potent drugs that may be fatal if administered incorrectly. The ability to perform drug calculations accurately is therefore paramount to prevent placing patients at risk.Drug Calculations for Nurses: A Step-by-Step Approach teaches healthcare professionals how to perform drug calculations with confidence and competence. It provides step-by-step guidance to carry out accurate drug calculations, with units and drug strengths clearly explained.

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