BewellConnect - BW-OX1 - User Manual - 072017v2
8
- Do not use this device in situations requiring the presence of an alarm.
- Do not use the device in hazardous environment.
- This device is not designed to be used while the user is being transported.
- The device must not be used near or on top of another device.
- Do not use while charging.
- Do not insert anything into the device except the USB cable during charging.
Inaccurate readings may result from :
- Nail-polish (colorimetric interference) or artificial nails
- High levels of dysfunctional hemoglobin (carboxyhemoglobin or methemoglobin)
- Intravascular dyes (indocyanine green or methylene blue)
- Bright light. If necessary, protect the sensor positioning area
- Excessive movement of the user
- Defibrillators and interference from high-frequency electrosurgical devices
- Venous pulse
- Placing the sensor on a user with a blood-pressure cuff, an arterial or intravascular catheter
- High blood pressure, severe vasoconstriction, acute anemia or hypothermia
- Heart failure
- Stress
- Poor pulse quality (low perfusion)
- Low level of hemoglobin.
3. INFORMATION
3.1. OXYGEN SATURATION (SPO2)
Oxygen saturation is the level of oxygen in red blood cells after they pass through the lungs.
Many factors can affect the affinity of haemoglobin for oxygen and decrease blood oxygen satu-
ration. A digital pulse oximeter is non-invasive and can help to monitor SpO
2
.
ANALYSIS OF RESULTS
Warning :
This table does not apply to individuals already suffering from certain illnesses (e.g.
asthma, heart disease, respiratory diseases) or who are at altitudes above 4921 feet / 1500 meters.
If you are already suffering from a disease, always consult your doctor to analyze your results. If
you have any doubts about your results, contact your doctor.
SpO
2
(peripheral capillary
oxygen saturation) result as a %
Diagnosis
99 - 95
Normal level
94 - 90
Reduced level (medical visit recommended)
< 90
Critical level : consult a doctor immediately or call for
emergency help
Reference: World Health Organization (WHO): Pulse Oximetry Training Manual, 2011.
FALL IN PERIPHERAL CAPILLARY OXYGEN SATURATION DUE TO ALTITUDE
Please note :
The following table gives information about the effects of different altitudes on oxygen
saturation levels as well as their effects on the human body. The following table does not apply to individuals
already suffering from certain illnesses (e.g. asthma, heart disease, respiratory diseases). In people already
suffering from these illnesses, the symptoms (e.g. hypoxia) may already occur at low altitudes.
Altitude
SpO
2
(peripheral capillary oxygen
saturation) result as a %
Consequences for the individual
1500 - 2500 m
> 90
No mountain sickness (in general)
2500 - 3500 m
~ 90
Mountain sickness, adaptation
recommended
3500 - 5800 m
< 90
High probability of mountain sickness,
adaptation imperative
5800 - 7500 m
< 80
Severe hypoxia, only a stay for a limited
period of time is possible
7500 - 8500 m
< 70
Immediate life-threatening danger
Reference : Hackett PH, Roach RC: High-Altitude Medicine. Dans : Auerbach PS (ed): Wilderness Medicine, 3e édition ; Mosby, St.Louis, MO
1995 ; 1-37.
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