| A Pulse oximeter is a instrument with the purpose of | | | | Additionally, oximetry is used to analyze whether |
| measuring oxygenation of blood by measuring the | | | | oxygen therapy is necessary in a patient. Alerting |
| oxygen percentage in haemoglobin. It is usually | | | | users of a state of hypoxia is also another helpful |
| attached to the lobe of the ear or fingertip and | | | | usage. |
| records the flow of blood past a probe in the unit. | | | | A pulse oximeter is used to monitor oxygenation. |
| Some units make a sound or graph which coincides | | | | However, it cannot measure the metabolism of |
| with the pulse beat. | | | | oxygen. For oxygen metabolism, you must measure |
| 650nm & 805nm are the wavelengths of light | | | | carbon dioxide levels. |
| usually utilized in an oximeter's probe to record | | | | Pilots flying in a non-pressurized airplanes use portable |
| absorption and saturation of the haemoglobin in a | | | | pulse oximeters to measure the amount of |
| patient's blood. Oxygenation in the blood is measured | | | | supplemental oxygen that is required, if required. In |
| by this saturation level measured. Slow blood flow | | | | situations where oxygen levels may decrease, such |
| may introduce problems in normal pulse oximeter | | | | as high altitudes and vigorous exercise, portable pulse |
| functions due to the units mechanism of measuring | | | | oximeters have been very useful. People like mountain |
| blood flow. | | | | climbers and professional athletes have utilized these |
| Inaccuracy in a pulse oximeter may be caused by a | | | | portable oximeters for this purpose. |
| variety of things. Vasoconstriction and Venous | | | | Pulse oximeter applications have increased and data |
| congestion are common causes of mis-readings. Bright | | | | obtained from them has been used to create new |
| overhead lights and nail varnish can also be the culprit | | | | uses. Blood volume loss is one such new realization of |
| for false results. The existence of carbo-xyhamoglobin | | | | the capabilities of a pulse oximeter. An algorithm has |
| (methaemglobin) in the blood can confuse a pulse | | | | been devised over eyars of experimentation which |
| oximeter because they have difficulty distinguishing | | | | makes use of blood oxygenation and haemoglobin |
| between haemoglobin types. | | | | absorption levels to yield blood volume measurements. |
| When under anaesthesia, pulse oximeters are used to | | | | Household pulse oximeter units can now be found at a |
| monitor oxygenation and pulse rates. During | | | | variety of places and at prices that normal families can |
| mechanical ventilation and other intensive care | | | | afford. Brand names like Nellcor, Checkmate, and Nonin |
| situations, pulse oximeters have been used to great | | | | have finger pulse oximeters for sale like portable |
| success in the detection of oxygenation related | | | | oximeter and finger pulse oximeter. |
| problems before they are physically realized. | | | | |