- Measures Resting Energy Expenditure (REE/RMR)
- Determines caloric requirements
- CPT code #94690
- FDA cleared
- Can be operated by any office staff
- Unique printout to aid teaching
The REEVUE measures the oxygen that the body consumes. Using this measurement it calculates a patient’s Resting Energy Expenditure (REE), commonly referred to as a Resting Metabolic Rate (RMR). Physicians can screen for abnormally low metabolic rates and pinpoint the precise caloric intake required for weight loss, maintenance, or weight gain. Applications include nutritional assessments required to treat obesity as well as obesity related diseases such as metabolic syndrome, sleep disorders, diabetes, and thyroid disorders. Under strict laboratory protocol, the ReeVue can be used to measure basal metabolic rate (BMR). To download a ReeVue product brochure, click here.
Why Choose ReeVue?
Direct Oxygen Measurement
ReeVue by KORR directly measures the concentration of oxygen breathed out by each patient. The patient merely breathes through a simple mouthpiece as all the exhaled air is collected and analyzed. Because there is a direct correlation between oxygen consumed and calories burned (4.813 calories for every milliliter of oxygen consumed), an accurate measurement of oxygen consumption is an effective measurement of calorie consumption.
Mixing chamber Technology
A mixing chamber is considered the “Gold Standard” for Indirect Calorimetry (more commonly referred to as a Metabolic Measurement.) In the past, this system has been complicated and expensive, making it only practical for ICU’s and research departments. KORR advancements in technology make this method feasible for the typical practitioner.
Adjustments for barometric pressure, temperature, and humidity are key to an accurate VO2 measurement. The ReeVue measures these parameters during each routine calibration cycle, then automatically compensates to standard (STPD) conditions.
Other Indirect Calorimeters require the patient to draw both their inhalation and exhalation through the measurement device located at the patient’s mouth. The air they breathe in will pass through the same mechanism as countless patients before them. KORR uses a one-way valve in the disposable MetaBreather mouthpiece. This draws in fresh room air with each inspiratory breath and eliminates concerns about cross contamination. The disposable is thrown away and there is no need to clean equipment between each patient.
The ReeVue has a simple user interface that assists the operator from start to finish. No training or certification is required. It does not require a computer or software, and even the printer is optional. Everything you need is at your fingertips!
Reimbursable & Accurate
The ReeVue performs an oxygen uptake test, which is CPT code #94690.
ReeVue has been independently validated at the University of Southern California and Georgia State Univiersity. To view those results, click here.
It is desirable to measure a person’s metabolic rate at a true resting level. To ensure one is at rest, we recommend the following preparation:
- Avoid eating a meal 4 hours before the test.
- Avoid exercising on the day of testing.
- If possible, avoid the use of stimulants such as caffeine prior to testing.
- During the test it will be important to get into a comfortable position and relax as much as possible.
- Keep lips sealed lightly around the mouthpiece. It is important that all the air breathed out is analyzed by the ReeVue™.
Conduct a Test
- Turn on the ReeVue™ and wait while it automatically calibrates. The machine will indicate when calibration is complete. It is important that no hose or filter be attached during calibration.
- Expand the MetaBreather hose to its full length (5 feet) and connect it to the ReeVue™. Be sure to use only a KORR™ manufactured MetaBreather as use of any other breathing device will not insure accuracy and will void your KORR™ factory warranty.
- Have the patient place the nose clip on his nose and the mouthpiece in his mouth, using his lips to seal around the edges. The patient should be relaxed and breathe normally.
- After approximately 10 minutes, the ReeVue™ will end the test and prompt the tester to enter in patient data to compare patient results to averages. The results can then be printed out.
The Print Out
Click the button below to view/download the print out
Indirect calorimetry (the procedure performed by the ReeVue), is CPT coded and is covered by Medicare and most insurance providers. If you have any questions about insurance coverage, contact insurance providers directly.
|CPT Code||Description||Medicare National|
|94690||Oxygen uptake, expired gas analysis, rest, indirect||$53.62|
Diagnosis Codes – Weight Loss
CPT codes must be accompanied by an appropriate diagnosis code (ICD-10).
Medicare Nationally Covered Indications currently reads: “services performed in connection with the treatment of obesity are covered by Medicare when such services are an integral and necessary part of a course of treatment for diseases such as hypothyroidism, Cushing’s disease, hypothalamic lesions, cardiovascular diseases, respiratory diseases, diabetes, and hypertension.”
The AMA* cites that diagnoses codes supporting the medical necessity of Indirect Calorimetry include:
- E88.81 Metabolic Syndrome
- E88.9 Metabolic Disorder, Unspecified
- G47.00 – G47.9 Sleep Disturbances
- R06.02 Shortness of Breath
- Z79.899 Long Term Use of Other Medications
- R94.8 Abnormal results of function studies of other organs and systems (High or low metabolic rate)
- G0447 Intesive Behavioral Therapy for Obesity (see pdf below for details)
Diagnosis Codes – Nutrition
CPT codes must be accompanied by an appropriate diagnosis code (ICD-10).
- R94.8 High or Low Metabolic Rate. Abnormal results of function studies of other organs and systems
- Z71.3 Dietary surveillance and counseling
G0447 Code paper
*AMA CPT / ADA CDT Copyright Statement
CPT only copyright 2002 – 2013 American Medical Association. All Rights Reserved. CPT is a registered trademark of the American Medical Association. Applicable FARS/DFARS Apply to Government Use. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
Resting Metabolic Rate (RMR) is a VITAL SIGN for treating Overweight & Obese Patients
In 2006, the Northwestern Comprehensive Center on Obesity tested the RMR of 76 of their female patients. 17% of them would not have lost weight on the standard “1200 calorie a day” diet. In fact, they probably would have gained from 5 to 32 pounds in one year. Yet there were no other indicators that set them apart from those who could lose weight on that same diet.
Is it any wonder patients are frustrated?
For more information on the Northwestern Study, view this video
So what can a doctor do?
A simple 10 minute RMR test can accurately pinpoint how many calories a patient needs to consume to lose weight.
Showing a patient the results of their own metabolic test gives you the opportunity to teach solid scientific principles within the context of their own bodies. Studies show that this is the ideal circumstance to elicit behavior change.
Armed with a proper medical assessment, your patient is now ready to be referred to a weight loss expert. You may have an expert program set up within your practice. Or you may want to refer to a Bariatrician or community based program. Your KORR representative will be happy to assist you with this next step.
View Videos for more information:
|Type||Galvanic Fuel Cell|
|Resolution||0 to 30% O₂|
|Average Sensor Life||24 months|
|Air Flow Sensor|
|Type||Fixed-orifice Differential Pressure Pneumotach|
|Accuracy||±2% of reading|
|Range||-40 to 150 LPM|
|Breath Rate||5 to 40 breaths/minute|
|Tidal Volume||200 to 3000 ml|
|Size||12” x 9” x 4”|
|Weight||5.75 lbs (2.6 kgs)|
|Average Difference||24.7 kcal/day (-1.45%)|
|Standard Deviation of Difference||57.1 kcal/day (2.85% of reading)|
- Evaluation of a Novel Resting Metabolic Rate Measurement System
Joseph Orr, Ph.D. University of Utah, Department of Anesthesiology Salt Lake City, Utah, USA 84132 Introduction: Resting metabolic rate (RMR) is the rate at which a person burns calories while at rest. Between 70 and 80% of all calories are burned under resting conditions. Knowledge of metabolic rate is vital to nutritional assessment, weight loss planning and care of […]
- ReeVue Product Brochure
- ReeVue Video
- ReeVue Validation and Reliability Study 2015
Assessing Resting Metabolic Rate in Overweight and Obese Adolescents With a Portable Indirect Calorimeter: A Pilot Study for Validation and Reliability. Background: Indirect Calorimetry measured via the traditional indirect calorimeter is considered the “gold standard” for determining resting metabolic rate (RMR). Portable devices for assessing RMR are a less expensive option for measuring RMR in […]
ReeVue Frequently Asked Questions
For more information on metabolic rate testing, click the link below:Understanding RMR & VO2 Max