Pulse oximetry is a non-invasive technique of monitoring the level of saturation of oxygen gas in the blood of a patient. This monitoring is done using a recording pulse oximeter. The device monitors the way oxygen saturation changes in the body and alerts the doctor or the patient when it falls under dangerously low levels. This allows for fast intervention hence preventing possible loss of life or commas.
The working of these devices bases on the principle of spectrophotometry. This principle depends on how the red and infrared lights are absorbed by oxygen-filled and deoxygenated blood cells in the body. These absorption rates are taken by the device and then processed by the main machine to give new readings after every 0.5 or 1 second. This high frequency at which readings are generated ensures high accuracy in the device.
The gadget comprises of two light emitting diodes that emit infrared and red radiations. When in use, the diodes must be placed directly opposite to their respective detectors. The detectors and the diodes should then be separated by 5-10 mm of tissue. This is why an oximeter must be placed on an organ with thin tissues like an earlobe or fingertip. Sensors of the device are made into clips or wraps. Recent studies show that oxygen saturation inside the body cannot be measured effectively through earlobes.
These devices are very useful in any setting where the amount of oxygen saturation within the body needs to be known at all times. Such settings include emergency units, intensive care, operation rooms, and in recovery and treatment wards in hospitals. Patients are advised to keep calm or minimize major movements in order to ensure accuracy of the readings. Devices with recording capability are better because they maintain a history of all values taken over a given period.
Besides determining oxygen saturation in blood cells, oximeters can be used in many other situations. First, blood gas analysis may be replaced with oximetry except in situations where PaCO2 or acid-base state is needed. When compared to other techques, oximetry is less painful, costs less, and is simpler to perform. In cases where the patient is conscious, this method has a high level of accuracy. Recorded values are used as standards and can be utilized in determining variations.
Using an oximeter also ensures that oxygen supplied in tanks to patients is used economically without wastage. Other uses are in neonatal care and intrapartum fetal monitoring. However these two applications are not yet standardized but they may in the near future. Besides being used in medical buildings, these devices are also used in ambulances as a form of first aid to patients. They are also becoming a common component of GP kit.
In primary care, oximetry finds use in diagnosing and managing exacerbation of chronic obstructive pulmonary disease in a location. It also helps in grading the level of seriousness of an asthma attack. An asthma attack is considered life-threatening is the level of saturation falls at or below 92 percent. Severity of bronchiolitis in children is also assessed and medically cared for through this method.
The capability of recording oximeters to record readings raises their prices above those of other models. Costs are dictated by the number of additional functionalities in the gadget. Purchases may be made from shops that sell medical apparatus.
The working of these devices bases on the principle of spectrophotometry. This principle depends on how the red and infrared lights are absorbed by oxygen-filled and deoxygenated blood cells in the body. These absorption rates are taken by the device and then processed by the main machine to give new readings after every 0.5 or 1 second. This high frequency at which readings are generated ensures high accuracy in the device.
The gadget comprises of two light emitting diodes that emit infrared and red radiations. When in use, the diodes must be placed directly opposite to their respective detectors. The detectors and the diodes should then be separated by 5-10 mm of tissue. This is why an oximeter must be placed on an organ with thin tissues like an earlobe or fingertip. Sensors of the device are made into clips or wraps. Recent studies show that oxygen saturation inside the body cannot be measured effectively through earlobes.
These devices are very useful in any setting where the amount of oxygen saturation within the body needs to be known at all times. Such settings include emergency units, intensive care, operation rooms, and in recovery and treatment wards in hospitals. Patients are advised to keep calm or minimize major movements in order to ensure accuracy of the readings. Devices with recording capability are better because they maintain a history of all values taken over a given period.
Besides determining oxygen saturation in blood cells, oximeters can be used in many other situations. First, blood gas analysis may be replaced with oximetry except in situations where PaCO2 or acid-base state is needed. When compared to other techques, oximetry is less painful, costs less, and is simpler to perform. In cases where the patient is conscious, this method has a high level of accuracy. Recorded values are used as standards and can be utilized in determining variations.
Using an oximeter also ensures that oxygen supplied in tanks to patients is used economically without wastage. Other uses are in neonatal care and intrapartum fetal monitoring. However these two applications are not yet standardized but they may in the near future. Besides being used in medical buildings, these devices are also used in ambulances as a form of first aid to patients. They are also becoming a common component of GP kit.
In primary care, oximetry finds use in diagnosing and managing exacerbation of chronic obstructive pulmonary disease in a location. It also helps in grading the level of seriousness of an asthma attack. An asthma attack is considered life-threatening is the level of saturation falls at or below 92 percent. Severity of bronchiolitis in children is also assessed and medically cared for through this method.
The capability of recording oximeters to record readings raises their prices above those of other models. Costs are dictated by the number of additional functionalities in the gadget. Purchases may be made from shops that sell medical apparatus.
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