Introduction
Masimo Rainbow is the first technology to noninvasively measure blood constituents and fluid responsiveness that previously required invasive procedures. Besides measuring arterial oxygensaturation level (SpO2) and pulse rate, Rainbow technology measures following parameters as well: Hemoglobin (SpHb), Carboxyhemoglobin (SpCO) and Methemoglobin (SpMet).
Traditional pulse oximeters use wavelengths of two lights (infrared light at 940 nm and red light at 660 nm), which are absorbed differently by either oxyhemoglobin or the reduced hemoglobin to measure SpO2 concentration. Two-wavelength oximeters cannot measure total hemoglobin or dyshemoglobins. Rainbow sensor technology uses more than 7 wavelengths of light to acquire blood constituent data based on light absorption
When used with the Masimo Rainbow Test Sensor, ProSim Vital Sign Simulator is the first and only simulator capable of verifying the performance of Masimo Rainbow Oximeters.
How to test Masimo Rainbow
1. Attach the Rainbow Test sensor to the artificial finger of ProSim 8 as shown in the figure below. Place the sensor with the LEDs on the bottom of the artificial finger. While placing the sensor on the artificial finger, monitor the signal indicator along the bottom of the product display. Adjust the sensor on the finger for maximum signal strength.
2. Select Masimo Rainbow from Type selection:
3. The SpO2 screen shows three more parameters than what is shown for other types of sensors: SpMet, SpCO, and SpHb.
a. SpMet, SpCO, and SpHb cannot be set through the ProSim. The special Masimo Rainbow cable sets them based on the measured SpO2 percent.At 100 %, SpMet = 0 %, SpCO = 0 %, and SpHb = 25 g/dl.
i. SpCO: -1 % change in SpO2 = +0.7 % change in SpCo
ii. SpMet: -1 % change in SpO2 = +0.3 %, SpMet
iii. SpHb: -1 % change in SpO2 = -0.5 g/dl change in SpHb
iv. SpHb does not change for values of SpO2 above 90 %.