KORR MetaCheck 7100 User manual

KORR Medical Technologies, Inc
i
MetaCheck™
Metabolic Analyzer
Model 7100
User Manual
Copyright ©2003, KORR™ Medical Technologies Inc. This document contains information,
which is proprietary and the property of KORR™ Medical Technologies Inc., and may not be
reproduced, stored in a retrieval system, translated, transcribed, or transmitted, in any form, or by
any means, without prior explicit written permission from KORR™ Medical Technologies Inc.
Manual Revision Date June 6, 2011
9FG0026 Rev C

KORR Medical Technologies, Inc
ii

KORR Medical Technologies, Inc
iii
Congratulations
Your MetaCheck™ Metabolic Analyzer is a clinical quality
instrument that measures energy expenditure. It will provide you
measurements with similar accuracy as devices used in hospital intensive
care units.
I am sure you will find the MetaCheck™ extremely simple to use.
The printout provides a graphical way to present the measurement results
in a manner that your clients will easily understand. You may find that the
greatest power of the product is in educating individuals about their own
“Energy Balance”.
Rather than starving themselves, or using diets based on the
average population, you can provide your clients with a precise metabolic
measurement. This measurement will allow them to determine what is
the most number of calories they can eat and still lose weight! As they
learn to eat to their metabolism, individuals will be put on the road of life-
long weight management.
I wish you great success in marketing your facility using the
MetaCheck™. I am sure you will find it to be a powerful tool for attracting
new business and establish your facility as leading edge and successful.
Sincerely,
Julie K. Kofoed
Vice President of Marketing

KORR Medical Technologies, Inc
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Table of Contents
CONGRATULATIONS............................................................................................................................. III
TABLE OF CONTENTS........................................................................................................................... IV
CHAPTER 1: INTRODUCTION ............................................................................................................1
CHAPTER 2: USER INTERFACE DESCRIPTION.............................................................................4
CHAPTER 3: QUICK USE INSTRUCTIONS.......................................................................................8
CHAPTER 4: EQUIPMENT SETUP......................................................................................................9
CHAPTER 5: CONDUCTING A METABOLIC RATE TEST..........................................................10
CHAPTER 6: POST TEST OPTIONS..................................................................................................16
CHAPTER 7: TROUBLESHOOTING .................................................................................................27
CHAPTER 8: WARNINGS AND PRECAUTIONS ............................................................................35
CHAPTER 9: MAINTAINING DEVICE EFFECTIVENESS............................................................36
CHAPTER 10: SPECIFICATIONS ........................................................................................................37
CHAPTER 11: WARRANTY ..................................................................................................................39
CHAPTER 12: SERVICE POLICY ........................................................................................................40

Chapter 1: Introduction
1.1 Device Description
The MetaCheck™ Model 7100 is an indirect calorimeter. It determines
resting energy expenditure (REE) by measuring oxygen uptake. Resting
energy expenditure is the amount of calories that a patient will expend (burn)
in 24 hours of resting.
REE is calculated using the Weir equation with an assumed RQ=0.83. See “Weir,
J.B., New Methods for Calculating Metabolic Rate with Special Reference to
Protein Metabolism. J. Physiology, 1949 109: pages 1-9”
1.2 Intended Use
WARNING:
The MetaCheck™ is NOT a medical device.
It is not intended to be used for the diagnosis or treatment of disease.
For medical applications, customers should use the REEVUE Indirect Calorimeter from KORR™.
The REEVUE has clearance from the US Federal Food and Drug Administration (FDA)
to be marketed as a medical device.
The MetaCheck™ is intended for non-medical application to determine
energy expenditures in individuals. This is typically used to determine how
many calories the individual burns at rest.
The device determines resting energy expenditure (REE), also referred to as
resting metabolic rate (RMR) from a measurement of an individual’s oxygen
uptake.
The MetaCheck™ is typically used in applications to help individuals
determine the caloric requirements for them to lose, or maintain weight.

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1.3 Theory of Operation
1.3.1 Metabolic Testing
Metabolism is the process of converting food into heat or energy. The rate
and efficiency with which the body converts food to energy is referred to as
the metabolic rate. The most direct method of measuring metabolic rate is to
directly measure the amount of heat produced by the body. This method is
referred to as direct calorimetry. Direct calorimetry is difficult and impractical,
as it requires a subject to be placed in a special insulated room where the
flow of heat into and out of the room is measured and controlled. A more
common method of metabolic rate measurement is indirect calorimetry. In
indirect calorimetry, the amount of oxygen consumed rather than the amount
of heat produced is measured. Every calorie consumed requires a fixed
amount of oxygen to be converted to energy. The rate at which oxygen is
used is directly proportional to the rate of caloric expenditure. In short,
measuring the rate of oxygen consumption is equivalent to measuring the
amount of calories being used. The MetaCheck™ is an indirect calorimeter
because it measures oxygen consumption and calculates energy expenditure.
1.3.2 Oxygen Consumption
The number of calories burned by the body is directly proportional to the
amount of oxygen consumed. The MetaCheck™ calculates oxygen
consumption by measuring the concentration of oxygen inhaled and
comparing it to the concentration of oxygen exhaled. Oxygen concentration is
measured during an automatic calibration cycle prior to each test to ensure
accuracy of the measurement. The MetaCheck™ also measures the
temperature, relative humidity, and barometric pressure to further improve the
accuracy of the calculations.
To measure oxygen consumption, all of the air exhaled by the user must pass
through the MetaCheck™. Two one-way valves are configured in the
disposable mouthpiece of the MetaBreather™ to ensure that only fresh air is
inhaled and all exhaled gas passes through the hose and into the
MetaCheck™. Because of the “one-way” valves in the MetaBreather™, the
user can never inhale gas from the hose or the MetaCheck™, thereby
eliminating the possibility of cross-contamination between users. It is
important to use a nose clip during a test so that no air escapes through the
nostrils and is not analyzed. Failure to use a nose clip would cause a lower
REE reading.

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1.3.3 Calorie Calculation
The number of calories expended for a given amount of oxygen consumed.
The exact relationship between calories consumed and oxygen consumption
is also affected by the amount of carbon dioxide produced by the body as well
as oxygen consumed. However, the error that occurs by not considering
carbon dioxide is never larger than 1% and is usually less than 0.5% during a
resting metabolic test.
Because the volume of oxygen changes depending on the barometric
pressure (elevation above sea level) and the room temperature where the
measurement is made, it is necessary to convert all measurements to a
standard temperature and pressure. This standard pressure and temperature
is called STPD, (Standard Temperature and Pressure Dry).
The MetaCheck™ measures barometric pressure, relative humidity and
temperature during each automatic calibration cycle. Using these measured
parameters, VO
2
and metabolic rate measurements are all automatically
compensated to standard (STPD) conditions.
1.3.4 Resting Energy Expenditure Measurements
Aresting energy expenditure measurement is
intended to measure the number of calories that an
individual would burn if he or she were to be at rest
for 24 hours. For the purpose of comparing the
results against published, predicted normal values,
it is important that the testing procedure follow
some important guidelines. Factors that affect
metabolic rate should be considered. In most
cases, the measured resting metabolic rate will not
be done under theoretically ideal conditions, but it
will be indicative of the subject’s actual resting level
during normal daily conditions.
Basal energy expenditure (BEE) measurements are referred to, but are rarely
truly tested, because of the inconvenience and cost to the individual. BEE
testing requirements usually include a 24-hour fast, monitored body cycles,
and an overnight stay in a clinic. You should note that the MetaCheck™ will
accurately measure BEE if the test is administered properly. A resting energy
expenditure (REE) test, also called resting metabolic rate (RMR), is a
measure of the calories consumed while a subject is at rest. A REE test
should be taken when the patient is sitting, or lying, comfortably, relaxed, and
awake. This indicates how many calories the body is using while in that
resting state. This is measured by the MetaCheck™ and is represented in
calories per day.

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Chapter 2: User Interface Description
2.1 Front Panel Description
The front panel is comprised of displays, keypad and connections. Figure 2.1
illustrates the MetaCheck™ keypad. The various keys and their functions are
described on the following pages.
Figure 2.1 MetaCheck™ Keypad
2.1.1 Key Group
A group of keys are located to the right of the display. Most of the user
interaction with the MetaCheck™ is with these keys. Figure 2.2 shows the
key group.
Figure 2.2 Key Grouping. The key group includes the UP ARROW,
DOWN ARROW, ENTER (check), MENU, and the BACK keys.

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2.1.2 Soft Keys
Underneath the display are two keys that do not have any labels. These are
called “Soft Keys.” The word “Soft” comes from the fact that the key functions
are defined by the software in the MetaCheck™. When these keys are
active, the bottom line of the display will have text that defines their function.
There is a Left Soft Key and a Right Soft Key. Figure 2.3 is an example of a
display showing Soft Key labels.
Figure 2.3 Example of Soft Keys defined on the display. In this example
the “[DATA] Soft Key” is selected by pressing the key on the left under the
display. Likewise, the “[PRINT] Soft Key” is selected by pressing the key
on the right under the display.
2.1.3 Display
The MetaCheck™ has a text (LCD) display that is used to show data, system
status information and display results. During testing, the display is used to
show the measured parameters and to provide user assistance messages.

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2.1.4 Key Functions
ON / STANDBY
This key is used to turn the device on and off. In standby
(off) mode there is still electrical power going to the
device, but the display will be dark.
NOTE: A green light appears next to this key when power
is applied. The external power supply must be
connected.
ENTER
This key is used to complete or confirm data entry.
For example, when entering the subject age, this key is
pressed after the correct age has been set.
UP ARROW
This key is used to increase values when entering data.
For example, when entering the subject age, this key is
pressed to increase the number of years.
DOWN ARROW
This key is used to decrease values when entering data.
For example, when entering the subject age, this key is
pressed to decrease the number of years.
BACK
This key is used to go back or to cancel an operation.
For example, if after entering the subject’s age a screen
appears to enter the subject’s weight. Pressing the
BACK key would cancel the weight entry and return you
back to the screen for entering age.
MENU
This key will bring up the menu. Various functions can be
done through the menu such as re-print a report or start a
new test.

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2.2 Back Panel Connections
Power ←This connection labeled 12VDC is for the power adapter input.
Connect the power adapter supplied with the MetaCheck™ to this connection
on the rear of the instrument. Use of a power supply other than those
provided by KORR™ medical technologies is not recommended and can
damage the unit and void the warranty.
Printer ↔The printer connection is on the rear of the MetaCheck™
instrument. It will connect to the printer as if it were a PC. This cable is
included with the MetaCheck™ Quick Start Kit.

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Chapter 3: Quick Use Instructions
1. Turn on the unit.
CAUTION: Ensure the Single Patient Use “MetaBreather™” hose is not attached during
calibration. Remember to dispose of the hose/mouthpiece after use.
2. Wait for device to be ready.
oCalibration will start automatically when device is turned on.
oWhen calibration is complete the device indicates
“Waiting for First Breath”.
3. Begin the test.
oExtend the hose to full length.
oPlace the mouthpiece of the NEW Single Patient Use “MetaBreather™” in the
patient’s mouth.
oAttach the hose to the “Air Intake” on the device.
oPlace the nose clip securely on the patient’s nose.
4. Perform the test.
oAdvise the patient that the lips need to create a seal around the mouthpiece
oEncourage the patient to relax and breathe normally.
oWhen test is complete the device indicates
“Test Complete”
“Remove the Hose”.
oDispose of the “MetaBreather™” hose, mouthpiece and nose clip after use.
5. Enter the patient’s information (Y/N).
oIf comparison data and BMI calculation is desired, select “Yes” then use the
arrow keys to enter the patient’s age, weight, height, and gender.
oOtherwise, select “No.”
6. Print the report.
oThe report can be printed after the patient’s information has been entered, by
pressing the “Print” soft key.
oThe machine will automatically begin the “Drying Mode” when ON/OFF key is
pressed. When performing successive tests this mode may be bypassed by
pressing the ON/OFF key twice.

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Chapter 4: Equipment Setup
4.1 Environment
In order for the MetaCheck™ to operate properly, it should be placed in a
properly ventilated area. The device performs within specifications when used at
temperatures between 59°F (15°C) and 86°F (30°C).
4.2 Parts and Connections
Upon shipment, the MetaCheck™ is supplied with a power adapter and power
cord. If you intend to use a printer with the MetaCheck™, connect the printer to
the MetaCheck™ using the cable and adapter provided in the Quick Start Kit
before turning on the MetaCheck™. The power cord plugs into the wall and the
power adapter then plugs into the power plug on the back of the MetaCheck™.
4.3 On/Standby control
Press the On/Standby key on the front of the MetaCheck™ to turn on the system.
The green light below the [on/off] key indicates that the device is powered on.
Pressing the on/standby key when the device is already on will place the device
into “reset mode”. In this mode, an internal fan is engaged to move air through
the MetaCheck™ to prevent condensation that can occur during normal use and
ensure longer system life. The MetaCheck™ will automatically turn off after 20
minutes. Only connect the mouthpiece when the system is being used for a test.
No mouthpiece should be connected any time when the internal fan is running.
4. 4 Display Screen
The splash screen appears when the device is first turned on. Line number two
changes from Firmware Version to EEP File Version to Print File Names.
MetaCheck
ver 2.05.00
SN 10204
KORR Medical Tech.
Figure 4.1 MetaCheck™ Splash Screen

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Chapter 5: Conducting a Metabolic Rate Test
5.1 Warm Up
Upon turning on the MetaCheck™, it will take a moment to warm up. The warm
up screen is shown following the splash screen. It will automatically end and
begin calibration when the device has warmed up. The enter key will override
the warm up and skip directly to calibration. This may be desired when doing a
large number of tests in succession.
System Warmup
Please Wait
Temp: 18.5 C
ENTER to Override
Figure 5.1
5.2 Automatic Calibration
The MetaCheck™ will calibrate immediately following warm-up. It is completely
self-calibrating. During the calibration, NO HOSE OR MOUTHPIECE SHOULD BE
ATTACHED! If the hose is attached, the MetaCheck™ will beep and display “Please
remove the hose.”
Calibration will typically take 2 to 3 minutes to complete. The third line of the
display will show temperature, barometric pressure, relative humidity, and
oxygen readings during calibration. The fourth line has **** that will scroll across
the screen during calibration.
Calibrating
Please Wait
Oxygen: 20.8 %
*******
Figure 5.2 Calibration Screen
During calibration, the MetaCheck™ will draw room air into the system and past
the oxygen sensor. Removing the hose and/or filter from the MetaCheck™ during
calibration assures the free flow of air and thereby accurate calibration. After the
oxygen sensor has been calibrated to room air, the system detects baseline, or
“zero”, flow. During this time it is imperative that no gas flows through the

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MetaCheck™. If gas flow is detected, the system will indicate that error number
112 (Device cannot be Zeroed) has occurred. If this error is detected, calibration
time will be prolonged. However, no user interaction, other than to prevent any
flow through the system, is needed to correct this problem.
When calibration is complete, the text on the display will read “Calibration
complete, waiting for first breath.” The MetaCheck™ will “chirp” periodically to
indicate this.
Calibration Complete
Waiting For
First Breath
Figure 5.3 Calibration Complete
5.3 Connect the MetaBreather™ to the MetaCheck™.
The MetaBreather™ is expandable to a length of approximately 5 feet (1.5
meters). Extend the hose to its full length prior to connecting the hose to the air
intake on the MetaCheck™ instrument. Place the filter between the hose and air
intake.
5.3.1 Comfort
Verify with the patient that the mouthpiece will be comfortable. Flex the
tube to a position that will support itself. The mouthpiece can be rotated
within the tube to ensure comfort.
5.3.2 Safety
The MetaCheck™ will analyze all of the air exhaled during the test. To
ensure that only exhaled air passes through the system, one-way valves
are built into the MetaBreather™ mouthpiece. During inspiration, the
intake valve is open allowing room air to enter the mouthpiece and the exit
valve is closed ensuring that no room air enters the MetaCheck™.
During exhalation, the intake valve is closed to prevent leakage to the
room and the exit valve is open ensuring that all expired gas passes freely
through the MetaCheck™.
Warning: Do not connect the Metabreather before calibration is
complete and the text on the display indicates that the system
is waiting for the first breath.

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5.4 Position the nose clip.
When the patient is comfortable, place the nose clip on the patient’s
nostrils. The nose clip is used to block airflow through the nostrils and
ensures that the MetaCheck™ analyzes ALL of the exhaled air. A nose
clip is not necessary if a full face mask is used for testing.
5.5 Place the MetaBreather™ mouthpiece in the patient’s mouth.
The MetaBreather™ mouthpiece
should be placed in the mouth. The
lips should close around the
mouthpiece forming a seal. Be sure
that the lips form an air-tight seal
around the mouthpiece so that all
expired gas air passes through the
hose. The hose used with the
mouthpiece is specially designed to
support the mouthpiece during a
test. The mouthpiece can also be
rotated within the hose to promote comfort. To do this, bend the
hose in such a way that it supports the weight of the hose and
mouthpiece when they are in place. The hose will retain its form
after it has been bent. It is important that the patient relaxes as
much as possible during the test.
Warning: Always use a KORR factory authorized MetaBreather
to ensure correct metabolic rate measurements and protect
your MetaCheck device warranty.

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5.6 Begin Testing
The MetaCheck™ is designed to measure the patient’s resting energy
expenditure. This means that the patient should be encouraged to rest to
the greatest degree possible during the test. A reclining position and quiet
atmosphere is recommended.
5.6.1 Test Length
The default test duration is 10 minutes. The test length may be
changed from the user menu.
5.6.2 Administration
The patient should be advised to relax and breathe normally.
Remind them to keep a tight seal around the mouthpiece to insure
that all exhaled air goes through the device. The patient may
remove the mouthpiece or nose clip at any time during the test for 1
or 2 breaths. Removing the nose clip or mouthpiece for a few
breaths during the test will not degrade the accuracy of the
measurement.
5.6.3 Display Screens
The following screens can be displayed during testing. The user
may switch between them by pressing the up and down [arrow]
keys. Changing the displayed screen during the test will not affect
the accuracy of the results.
Each screen displays different data on the first two lines:
Screen 1
•REE: The current resting energy expenditure (REE)
calculated at that point of testing, displayed in Calories per
day.
•TIME: The length of time the test has been running.
REE: 2347 kcal/dy
Time: 10:03
Data Stable
>>>>>>>>
Figure 5. 4 Testing Screen 1

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Screen 2
•VO2: The volume of oxygen consumed displayed in milliliters
per minute.
•REE: The current resting energy expenditure (REE)
calculated at that point of testing, displayed in calories per
hour.
VO2: 339 ml/min
REE: 2347 kcal/hr
Data Stable
>>>>>
Figure 5.5 Testing Screen 2
Screen 3
•OXYGEN: Percent oxygen detected.
•RESP RATE: Respiratory rate in breaths per minute.
Oxygen: 16.5 %
Resp Rate: 18.4 bpm
Data Stable
>>>>>>>>>>>>>>
Figure 5.6 Testing Screen 3
Screen 4
•REE: The current restingenergy expenditure (REE)
calculated at that point of testing, displayed inkJoules
per day.
•TIME: The length of time the test has been running.
REE: 9.82 kJ/day
Time: 10:04
Data Stable
>>>>>>>>>>>>>>
Figure 5.7 Testing Screen 4
The third and fourth lines remain the same throughout all testing
screens. The third line will read “data stable” only when the
readings have stabilized. This line is blank if the readings have not
yet stabilized.
The fourth line is an indication of the tidal volume as the test
subject breaths through the mouthpiece. If these arrows are