Pulse oximetry is a method of monitoring the saturation of oxygen in a patient. The monitoring device used for this process is called a recording pulse oximeter. The sensor in the device is placed across a thin part of the body preferably the earlobe or fingertip in adults and foot or hand in infants. The device monitors the percentage of hemoglobin loaded with oxygen and displays the value on a screen.
When making a purchase, one should go for a device that incorporates alarm systems. Such devices produce audible sounds to alert the patient when the concentration of oxygen falls below unacceptable levels. This feature is particularly important during night time when one is asleep. People with impaired vision or any kind of immobility may also find alarms to be important.
Functioning of oximeters is based on disparity in light absorption. They have processors and two LEDs, which directly face a photodiode. The LED and the photodiode are separated by a light part of the body like earlobes. One LED is red in color and has a wavelength of 660nm while the second one is infrared with a wavelength of 940nm. The absorption of the LED lights by oxygenated and deoxygenated hemoglobin is very different. This is the working principle of the gadget.
The LED flashes at a rate of about thirty times in a second. A device that maintains the rate of flashing constant has a high accuracy. A good device is one that has high accuracy and also has some means of notifying the user in case of an incorrect reading. Presence of interferences that affect accuracy in the readings should also be disclosed to the user. Some modern models have computer interfaces allowing the user to see readings in a better way.
The oximeter can be integrated into a larger system that monitors several parameters in patients. Such capabilities are important because the user can collect a range of measurements from the system at once. Additional features such as portability and ability to measure and display the rate at which the heart beats are important too. In portable brands, the life of the battery and how long it takes to discharge are the key factors to consider.
Not all models have the same capabilities. Most recent recording oximeters have Bluetooth technology incorporate in them to allow for exchange of information with other devices. They also maintain a record of data collected over a period of time to allow for analysis of oxygen concentration patterns in patients. The records can also be printed for further analysis, referral, or record keeping.
When making a purchase, extra features to look for include ability to store data for multiple users, ease of storage, and availability of additional accessories. Additional accessories include storage cases and log books. The device should be well shaped for convenience and it must be easy to use too. There are many color shades on the market and one can choose according to their preferences.
It is advisable to read the manual that accompanies the product before using. The manuals provide important information about handling, storage, and maintenance. Malfunctioned products should be checked before they are used to avoid working with incorrect data.
When making a purchase, one should go for a device that incorporates alarm systems. Such devices produce audible sounds to alert the patient when the concentration of oxygen falls below unacceptable levels. This feature is particularly important during night time when one is asleep. People with impaired vision or any kind of immobility may also find alarms to be important.
Functioning of oximeters is based on disparity in light absorption. They have processors and two LEDs, which directly face a photodiode. The LED and the photodiode are separated by a light part of the body like earlobes. One LED is red in color and has a wavelength of 660nm while the second one is infrared with a wavelength of 940nm. The absorption of the LED lights by oxygenated and deoxygenated hemoglobin is very different. This is the working principle of the gadget.
The LED flashes at a rate of about thirty times in a second. A device that maintains the rate of flashing constant has a high accuracy. A good device is one that has high accuracy and also has some means of notifying the user in case of an incorrect reading. Presence of interferences that affect accuracy in the readings should also be disclosed to the user. Some modern models have computer interfaces allowing the user to see readings in a better way.
The oximeter can be integrated into a larger system that monitors several parameters in patients. Such capabilities are important because the user can collect a range of measurements from the system at once. Additional features such as portability and ability to measure and display the rate at which the heart beats are important too. In portable brands, the life of the battery and how long it takes to discharge are the key factors to consider.
Not all models have the same capabilities. Most recent recording oximeters have Bluetooth technology incorporate in them to allow for exchange of information with other devices. They also maintain a record of data collected over a period of time to allow for analysis of oxygen concentration patterns in patients. The records can also be printed for further analysis, referral, or record keeping.
When making a purchase, extra features to look for include ability to store data for multiple users, ease of storage, and availability of additional accessories. Additional accessories include storage cases and log books. The device should be well shaped for convenience and it must be easy to use too. There are many color shades on the market and one can choose according to their preferences.
It is advisable to read the manual that accompanies the product before using. The manuals provide important information about handling, storage, and maintenance. Malfunctioned products should be checked before they are used to avoid working with incorrect data.
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