1. Weights and Measures Nurses Assistant Unit 7

2. Weights and Measures Part A The metric system
Chapter 15 pg pg 419
Part B Weight, Length and liquid volume
Part C Military Time
Chapter 4 pg 44-45

3. Common Equivalencies Metric Weight: 1kg=2.2lbs Metric Height:
1cm=.39inches
1inch=2.5cm

4. Common Equivalencies Medical Weights and Measures: 1cc= 1ml
1ounce= 30cc or 30 ml (cc & ml)
1teaspoon= 5ml
1pint=16 ounces= 500ml
1quart=32ounces= 1000 ml or cc

5. 1 liter= 1000ml
1 foot= 30 cm
1cup=8 ounces= 240ml
12 ounces= ___ cups= ____ ml or cc
½ cup= ____ ounces = ____ml or cc

6. Weights and Measures used in the average U.S household
Weight is measured in ounces (oz) and pounds (lbs)
Length is measured in inches, feet, and yards
Liquid volume is measured in fluid ounces, pints, quarts, and gallons
Pay attention if they are asking you to measure liquid or solid items.

7. Liquid Measuring Equipment
Graduate Cylinders
Cylinders are marked with lines and numbers
Measurements for cylinders are marked in ounces and mls or cc
Other equipment used, urinals, med cups, hats, specimen cups.

8. Procedure for Measuring Liquid Volume
Pour liquid into graduate container/cylinder
Place on flat surface
Read at eye level
Use measurements at lowest level of liquid surface
Record measurements using correct abbreviations for unit measurement

9. Procedure for Measuring Length/ Height
We can use a measuring tape to measure the heights of residents who are contracted, stooped, or in bed
Measure in segments, while marking the sheet with a pencil
Add all measurements together to find a total

10. Procedure for Measuring Length/ Height Cont…
Measuring a residents Ht using an upright scale
Assist the resident to remove their slippers
Place a paper towel on the scale for infection control purposes
Assist the resident to stand on the scale facing away
Lower the height measuring rod until it rests on the residents head
Record their Ht, reading is made at the moveable point using centimeters. You DO NOT need to convert!
Assist the resident off of the platform

11. Procedure for Measuring Weight
Make sure the scale is balanced at zero
Place paper towel on the scale
Remove residents slippers and help resident to step onto the scale facing forward
Read the scale when in balance to the nearest quarter pound (or tenth of a kilogram) and record
Help the resident off of the scale
Return and clean equipment

12. Procedure for Measuring Weight Cont…
Make sure to weigh residents at the same time everyday for accuracy
Types of scales
Wheelchair scale
Mechanical lift (hoyer) scale
Bed scale

13. Military Time
Military time is a concise method of expressing time used by the military, emergency services, hospitals, and other entities
Only uses four digits and no colons
Does not use AM or PM
When converting from military time to regular time and vice versa, the minutes and seconds do not change