User's Manual
Table Of Contents
- About this Manual
- Product Description, Indications for Use, Contraindications, and Features
- Safety Information, Warnings, and Cautions
- Chapter 1: Technology Overview
- Signal Extraction Technology (SET)
- rainbow Pulse CO-Oximetry Technology
- Pulse CO-Oximetry vs. Drawn Whole Blood Measurements
- General Description for Total Hemoglobin (SpHb)
- General Description for Total Arterial Oxygen Content (CaO2)
- General Description for Carboxyhemoglobin (SpCO)
- General Description for Methemoglobin (SpMet)
- SpCO, SpMet, and SpHb Measurements During Patient Motion
- rainbow Acoustic Monitoring (RAM) Technology
- Chapter 2: Radical-7 Descriptions
- Chapter 3: Setup
- Chapter 4: Operation
- Using the Touchscreen and Buttons
- Using Screen Lock
- Using the Home Button
- Navigating the Radical-7
- About the Display View
- Sensitivity Modes Overview
- Changing Sensitivity Modes
- Accessing the Main Menu
- Navigating the Main Menu
- Parameter Settings
- Sounds
- Device Settings
- Trends
- About
- Chapter 5: Profiles
- Chapter 6: Alarms and Messages
- About Alarms
- Silencing the Alarms
- Adaptive Threshold Alarm (ATA) Feature
- 3D Alarms
- Messages
- Replace Sensor Message
- Replace Cable Message
- Replace Adhesive Sensor Message
- Incompatible Sensor Message
- Incompatible Adhesive Sensor Message
- No Adhesive Sensor Connected Message
- Interference Detected Message
- SpO2 Only Mode Message
- Low Battery Message
- Low Perfusion Index Message
- Low Signal IQ Message
- Low SpCO SIQ Message
- Low SpMet SIQ Message
- Low SpHb SIQ Message
- Speaker Failure Message
- No Cable Connected Message
- No Sensor Connected Message
- Pulse Search Message
- Sensor Initializing Message
- Sensor Off Patient Message
- Incompatible Cable Message
- Chapter 7: Troubleshooting
- Chapter 8: Specifications
- Measurement Range
- Accuracy
- Resolution
- Electrical
- Environmental
- Physical Characteristics
- Trending
- Alarms
- Display Indicators
- Compliance
- Output Interface
- Wireless Radio (If Installed)
- Serial Interface Specifications
- Serial Interface Setup
- Analog Output and Nurse Call Specifications
- Symbols
- Country Codes (FCC and EU)
- Citations
- Chapter 9: Service and Maintenance
- Appendix: Best Practices for Comparisons to Reference Measurements
- Index
Radical-7 Chapter 1: Technology Overview
www.masimo.com 24 Masimo
Masimo SET DST
This figure is for conceptual purposes only.
General Description for Oxygen Saturation (SpO2)
Pulse oximetry is governed by the following principles:
1. Oxyhemoglobin (oxygenated blood) and deoxyhemoglobin (non-oxygenated
blood) differ in their absorption of red and infrared light (spectrophotometry).
2. The amount of arterial blood in tissue changes with your pulse
(photoplethysmography). Therefore, the amount of light absorbed by the varying
quantities of arterial blood changes as well.
3. As a plethysmographic waveform
Successful Monitoring for SpO2, PR, and PI
Stability of the SpO2 readings may be a good indicator of signal validity. Although stability is
a relative term, experience will provide a good feeling for changes that are artifactual or
physiological and the speed, timing, and behavior of each.
The stability of the readings over time is affected by the averaging mode being used. The
longer the averaging time, the more stable the readings tend to become. This is due to a
dampened response as the signal is averaged over a longer period of time than during shorter
averaging times. However, longer averaging times delay the response of the oximeter and
reduce the measured variations of SpO2 and pulse rate.
Functional Oxygen Saturation
The Radical-7 is calibrated to measure and display functional oxygen saturation (SpO2): the
amount of oxyhemoglobin expressed as a percentage of the hemoglobin that is available to
transport oxygen.
Note that carboxyhemoglobin is not capable of transporting oxygen, but is recognized as
oxygenated hemoglobin by conventional pulse oximetry.