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Demonstration Calculator – Multispecialty
SIDE A
SIDE B
SIDE A
* Centimeter measuring scale
* Body Temperature conversion scale
* Hypothermia and Fever Ranges for three
types of thermometers
* Annual CFalendar with simplified month-tomonth transition
* Fixed Holidays marked on annual calendar
* Automatic adjustment for Average
Menstrual Cycle Length
* Infants Age (in days) calculator
* Sperm Exposure scale
* Date of Ovulation and Implantation
* Pregnancy Landmarks scale
* Future or past Menstrual Cycle markers
* Gestational Age accurate to one day
* CRL, BPD, and Fetal Weight scales
* BMI Calculator and Body Type ranges
* Vital Signs calculator for Respiration and
Heart Rate adjusted for patient age
Marketing information surface area
Centimeter Scale
The Centimeter Scale located at the top of
Side A is used for a wide variety of medical
applications, including measurement of skin
lesions.
Body Temperature Scale
The Body Temperature scale displays a
patient’s hypothermia or fever range, and
interconverts Fahrenheit to Centigrade
In this example, the
patient’s body
temperature of
102.9°F (39.4°C) is
a low grade fever
by rectal thermometer but a mid
grade fever by ear
or oral thermometer.
Body Temperature ranges are displayed for three types of
thermometers – Eardrum scan, Oral, and Rectal.
Annual Calendar Scale
Month - to - Month Transitions
A small diagonal line marker is used to easily
and rapidly identify the first day of each
month on the Calendar Scale in order to
facilitate easy month-to-month transitions for
clinical scheduling.
Fixed Holiday Markers
Fixed holidays are
marked by color
dots on the
Calendar Scale to
assist clinical
scheduling near
certain holidays.
Christmas – red dot
New Years Day – black dot
Valentines
Day – red dot
Halloween –
orange dot
St Patrick's Day
– green dot
Forth of July – blue dot
Average Cycle Length Scale
In this example:
The Average Cycle
Length scale
automatically adjusts the
position of the Last
Menstrual Period (LMP)
marker to compensate for
variations in Menstrual
Cycles
LMP on January 7
for 36 day cycles
LMP on January 15
for 28 day cycles
LMP on January 21
for 22 day cycles
Average Cycle Length Scale
The Average Cycle Length scale automatically
compensates for cycle variations to greatly
improve accuracy in Gestational Age and Due Date
Due Date is on
November 3rd
Example:
LMP is on January 25
for average cycle
length of 28 days
Average Cycle Length Scale
Example: For LMP on January 26th
38
Due Date is on
November 13th
if average cycle
length is 38 days
Due Date is on
October 28th
if average cycle
length is 22 days
22
Sperm Exposure Scale
Example: Intercourse
between April 17 and
April 25 may result in
pregnancy.
Rarely, sperm may remain viable for up
to 7 days before ovulation. Most
conceptions occur with sperm 0 to 3
days old. Eggs are fertilizable for 28
hours after ovulation, so intercourse
up to 24 hours after ovulation may
result in conception.
Early Pregnancy Landmarks
Example: For
LMP on May 16
Ovulation is on
May 30
Embryo
Implantation is
on June 6
Missed next
Menstrual Period
would have been on
June 13
Pregnancy test
would be positive
between June 10
and June 19
Mid Pregnancy Landmarks
Biochemical Screen –---------- August 5 to Sept 6
Chorionic Villus Sample - August 11 to August 25
Nuchal Translucency -------- August 22 to Sept 8
Amniocentesis ------------------- Sept 8 to Sept 31
Tri/Quad Screen AFP ------- Sept 22 to October 7
Example:
LMP=June 3
28 day cycles
Level II Ultrasound ------- Oct 7 to Oct 28
Early Viability –----------- Nov 4 to Nov 18
GTT, RPR, H/H, Ab ---- Nov 18 to Dec 16
RhoGam injection ------ Dec 16 to Dec 31
Group B strep ------------ Feb 4 to Feb 18
Infant Age in Days
Calculate Infant Age by aligning the Birthday Marker (also the LMP 28 day marker)
with baby’s date of birth, then align the cursor marker with the current date. Read
the infant's age in days at the cursor marker position on the Light Blue Days Scale.
Birthday
Example 1:
For Birthday on
October 5, infant
age on
December 17 is
73 days
Birthday
Example 2:
For Birthday on
October 5, infant
age on June 26
is 263 days
Gestational Age
Crown-Rump Length and Fetal Weight
Example:
On March 20 the gestational
age is 8 weeks 3 days
Displays the average
Crown-Rump Length (in mm)
and Fetal Weight (in gms) for
gestational age range 4 weeks
2 days to 12 weeks 4 days, for
each gestational age and
corresponding calendar date.
This is Day 59 of gestation,
and Fetal Heart Motion
should be visible on
ultrasound
The Crown Rump Length
(CRL) should be 18 mm
Fetal weight is
approximately 1.5 gms
Gestational Age
Biparietal Diameter and Fetal Weight
Example:
On September 5 the
gestational age is
32 weeks 2 days
Displays the average
Biparietal Diameter (in mm)
and Fetal Weight (in gms) for
gestational age range from
12 weeks 4 days to 42 weeks
for each gestational age and
corresponding calendar date.
This is Day 226 of gestation,
and CBC should be ordered.
Biparietal Diameter (BPD)
should be 8.3 cm
Fetal Weight is
approximately 1800 gms
Menstrual Period Predictor
Calculates past and future expected calendar dates of Menstrual Periods for
patients with regular 28 day cycles. Align the LMP 28 day marker with the current
date, then align the cursor marker with a red dot on the Light Blue Days scale and
read the calendar date indicated by the cursor. Use the 1st, 2nd, 3rd, 4th,etc red dot
to predict Menstrual Dates for 1, 2, 3, 4, etc cycles in the future.
Expected MP
in 2 cycles
Example:
For LMP on June 1,
in 2 cycles the
expected MP will
start July 27.
1st dot
2nd dot
Menstrual Period Predictor
To calculate past calendar dates of Menstrual Periods, align the cursor marker
on the appropriate (1st, 2nd. 3rd ,etc) red dot on the date of the current or last
Menstrual Period, then read the date of the desired past Menstrual Period at the
LMP 28 day marker.
MP 2 cycles
ago
Current MP
Example:
For current Menstrual
Period on July 27,
the Menstrual Period
two cycles ago
started on June 1.
1st dot
2nd dot
Body Mass Index Calculator
Example:
Patient Weight is
190 lbs
Patient Height is
5’ 9”
Calculates the
Patient’s Body Mass
Index (BMI) from
Height and Weight,
and displays the
result using color
coded body type
ranges.
Use the Pink
field on Side A
Align 5’ 9” with
190 lbs on the
Height & Weight
scales
The BMI is
28 kg/m2
in the Overweight
range
Respiration Rate Calculator
Calculates patient's
rate of respiration
from total number of
inspirations during a
time period ranging
from 10 seconds to
45 seconds.
Example:
In This Case:
For a 4-year-old child, this
respiration rate is in the
Hypoventilation range
For a 16-year-old patient,
this respiration rate is in the
Normal range
The patient has
6 inspirations during a
20 second observation
period.
Align the 20 second
marker with the
Respiration 6 marker
The Respiration Rate is
18 per minute (rpm)
Pulse Rate Calculator
In This Case:
For a 4-year-old child, this
heart rate is in the Normal
range
For an Adult, this heart rate is
in the Tachycardia range
Calculates patient's
heart rate from total
number of pulses
during a time period
ranging from 10
seconds to 45 seconds.
The most common time
period used to measure
pulse rate is 15
seconds, identified by a
bold marker on the time
scale.
Example:
The patient has 28 pulses
during a 15 second
observation period.
Align the 15 second
marker with the Pulse
Count 28 marker
The pulse rate (heart rate)
is 110 per minute (bpm)
Marketing Space
On this demonstration model, there are two
blank regions on Side A and one large region on
Side B available for marketing information.
SIDE B
* ECG Heart Rate calculator– two speeds
* Conversion Scale – centimeters to inches
* Waist to Hip Ratio calculator
* Waist to Hip Ratio mortality risk calculator
– male and female
* Waist to Hip Ratio population percentile
– male and female
* Conversion Scale – pounds to kilograms
* Drug Dose calculator by Body Weight
* Drug Dose Syringe Volume calculator by
Body Weight
Large surface area for
marketing information
ECG Pulse Rate Calculator
Align the first QRS
complex with the
reference arrow on
the scale.
Read heart rate (in bpm) at the position of the
First or Second QRS complex, depending upon
ECG paper speed.
For ECG paper speed of 25 mm/sec, read heart rate at the Second
QRS complex. For ECG paper speed of 50 mm/sec, read heart rate
at the First QRS complex.
This scale calculates
a patient's heart rate
by measuring the
distance between
one or two QRS
complexes on a
standard ECG strip.
ECG Pulse Rate Calculator
Align the first QRS
complex with the
reference arrow on
the scale.
This scale calculates
a patient's heart rate
by measuring the
distance between
one or two QRS
complexes on a
standard ECG strip.
For Low Heart Rates
(Bradycardia)
For Bradycardia, use the Dark Green scale
at paper speed of 25 mm/sec. Read heart
rate at the First QRS complex.
ECG Pulse Rate Calculator
0
1
2
For standard paper speed of 25 mm/sec,
this patient has a heart rate of
35 beats/min as indicated at the
First QRS complex on the Dark Green
scale.
0
1
xx xx
for Normal
Range or
Tachycardia
For standard paper speed of
25 mm/sec, this patient has a heart
rate of 112 beats/min as indicated
at the Second QRS complex on the
Light Green scale.
xx
for Bradycardia
Inch to Centimeter Converter
Interconversion of Inches to Centimeters is done using
the Waist-to-Hip Ratio scale in the pink field on side B.
47 inches
equals
120 cm
Lay a straight edge or paper
edge, aligned with the center
of the calculator, across the
scales to inter-convert
centimeter measurements to
inch measurements.
Waist to Hip Ratio Calculator
Calculates the Waist to Hip Ratio (WHR) from the
patient's Waist Circumference and Hip Circumference
(in inches or centimeters)
Example:
For a patient with Waist
Circumference of 45 in
and Head Circumference of 50 in:
Align the 45 marker on
the Waist inches scale
with the 50 marker on
the Hip inches scale.
Read the Waist to Hip
Ratio (0.9) in the WHR
Window.
Waist to Hip Ratio
Mortality Risk and Population Percentile by Sex
The Waist-to-Hip Ratio is useful for determining the a patient's general risk of Mortality.
This feature also calculates the Population Percentile for the patient's waist to hip ratio.
Example:
For a Waist-to-Hip Ratio
of 0.9
The Relative Risk of Mortality for a
woman is 1.4
The Relative Risk of Mortality for a
man it is 0.9
Women with a WHR of 0.9 are
in the 85th percentile.
Men with a WHR of 0.9 are in
the 55th percentile
85th
1.4
0.9
55th
Pound to Kilogram Converter
This feature interconverts body weight from Pounds to
Kilograms, or vice versa.
Align the patient’s body weight at the Weight in Pounds
marker, then read the patient's metric body weight at the
Weight in Kilograms marker.
In this example, a 154 pound patient weighs 70 kilograms.
Example:
70 kg - - - - - - - - - - - equals - - - - - - - - - - - - 154 pounds
Drug Dose Calculator
by Body Weight
Rapid determination of a drug dose is accomplished by aligning the
patient's Body Weight (in pounds or kilograms) along the outer
yellow scale, then reading the Drug Dose (in milligrams) where the
appropriate reference line intersects the Dose Scale.
Example:
A patient who
weighs 146
pounds needs a
medication
administered at
0.75 mg/kg.
The calculated
dose is 45 mg.
Patient weighs
146 lbs
Drug Dose Calculator
by Syringe Volume
Example:
Rapid determination of the
Syringe Volume of an
injectable drug is
accomplished by aligning the
patient's Body Weight (in
pounds or kilograms) along the
outer yellow scale, then
reading the Syringe Volume
(in milliliters) at the level of the
Red Field inside the syringe
diagram.
A patient who
weighs 280 pounds
needs a
Pharmatropin
injection.
The calculated
volume of
Pharmatropin
is 0.60 ml.