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14BM16
Pulse Oximeter used to measure oxygen
saturation in the body i.e how much of the
hemoglobin in the blood is carrying the
o...
Oxygen enters the lungs and then is passed
on into blood. The blood carries the oxygen
to the various organs in our body. ...
Ratio of saturation:
 Pulse Oximetry consists of Red(R) and
Infrared(IR) light emitting LEDs and a photo
detector.
 Oxygenated and deoxygenat...
Finger is placed in between the light source
and the light detector. Non absorbed light by
finger reaches at detector.
Lig...
The amount of light absorbed depends on
three physical properties:
1. concentration of the light absorbing
substance.
2. l...
Amount of light absorbed is proportional to
the concentration of the light absorbing
substance.
Amount of light absorbed is proportional to
the length of the light path.
oxyhemoglobin absorbs more infrared light
than red light & deoxyhemoglobin absorbs
more red light than infrared light.
Using this ratio, the pulse oximeter can then
work out the oxygen saturation.
 Operating rooms
 ICU
 Postanesthesia care units
 Emergency departments and ambulances
 Endoscopy suites
 Sleep labo...
Pulse oximeter
Pulse oximeter
Pulse oximeter
Pulse oximeter
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Pulse oximetery

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Pulse oximeter

  1. 1. 14BM16
  2. 2. Pulse Oximeter used to measure oxygen saturation in the body i.e how much of the hemoglobin in the blood is carrying the oxygen.
  3. 3. Oxygen enters the lungs and then is passed on into blood. The blood carries the oxygen to the various organs in our body. The main way oxygen is carried in our blood is by means of hemoglobin. Normal oxygen saturation values are 97% to 99% in a healthy individual on room air.
  4. 4. Ratio of saturation:
  5. 5.  Pulse Oximetry consists of Red(R) and Infrared(IR) light emitting LEDs and a photo detector.  Oxygenated and deoxygenated hemoglobin have different light absorption rate. • Oxygenated hemoglobin absorbs more infrared light • Deoxygenated hemoglobin absorbs more red light
  6. 6. Finger is placed in between the light source and the light detector. Non absorbed light by finger reaches at detector. Light is emitted from light sources which goes across the pulse oximeter probe and reaches the light detector.
  7. 7. The amount of light absorbed depends on three physical properties: 1. concentration of the light absorbing substance. 2. length of the light path in the absorbing substance 3. oxyhemoglobin and deoxyhemoglobin absorbs red and infrared light differently
  8. 8. Amount of light absorbed is proportional to the concentration of the light absorbing substance.
  9. 9. Amount of light absorbed is proportional to the length of the light path.
  10. 10. oxyhemoglobin absorbs more infrared light than red light & deoxyhemoglobin absorbs more red light than infrared light.
  11. 11. Using this ratio, the pulse oximeter can then work out the oxygen saturation.
  12. 12.  Operating rooms  ICU  Postanesthesia care units  Emergency departments and ambulances  Endoscopy suites  Sleep laboratories  Cardiac catheterization laboratories  Delivery suites  Wards
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