Nursing Nerds

Dosage Calculations and IV Math

Book 05 · Page 11 / 15

Dosage Calculations and IV Math

Figure brief · not yet drawn

A single syringe barrel tilted 12 degrees, graduated to a real 5 mL scale, with a drip chamber silhouette overlapping the plunger end and one meniscus line resting on a graduation.

BOOK 06 · UPSELL 5

DOSAGE CALCULATIONS AND IV MATH

The promise line

Every formula the NCLEX-RN uses, worked end to end, with the self-check that catches an error before a patient does.

Spec strip

15 PAGES · 6 EQUATIONS · 40+ WORKED PROBLEMS · FILL-IN-THE-BLANK · MATRIX · TREND

What this book is

This is the calculation book. The rest of the family describes drugs, ranges, priorities and procedures. This one does arithmetic, out loud, with the units left on the page where you can see them cancel. Nothing here is a summary of a method. Every method is run on real numbers, and every number printed in this book was worked twice, independently, from the problem statement alone.

What you will be able to do by page 15

  • Convert between any two units the exam uses, in either direction, without guessing which way the decimal moves.
  • Solve a single-dose problem three ways and say how each method fails.
  • Compute a pump rate in mL/hr and a gravity rate in gtt/min from the same order, and tell from the stem which one the item wants.
  • Check a pediatric dose against a safe range before you draw it up.
  • Reduce a heparin, insulin or vasoactive bag to a concentration and titrate from it.
  • Name the five ways a correct formula still produces a lethal number.

Two conventions this book never breaks

Every numeral carries a leading zero when it is smaller than one, and no numeral ever carries a zero after the last meaningful digit. Units, micrograms and drug names are spelled out in full. No abbreviation from the ISMP Do-Not-Use list appears anywhere in this book, including inside the figures.

Takeawaythis is where the family stops describing math and starts doing it.