Features and limitations of a pulse oximetry

Oximeter very basic function is to measure a person's oxygen saturation level. It is used to determine how many molecules of oxygen are attached for hemoglobin molecules in the blood. A maximum of four molecules of oxygen may cling to a haemoglobin molecule. The normal percentage of a person would be about 90 to 100%.

Oximeters are accessible to everyone because oxygen levels can be monitored easily by just fix a person. Doctors and nurses should not step to be in touch to draw blood from patients. Within minutes, machines will be able to display the level of oxygen saturation. Even though they have many advantages, there are also some limitations.

One pulse oximetry functions, that is why it is sometimes referred to as the Pulse Oximeter. It uses a light that meets human pulse pressure. Instead of extraction of blood in the arteries, it measures the pressure in the arteries, expand and contract. If the device is not properly placed on a patient, find the pulse will be difficult. Conversely, if you do not find the pulse, then the device cannot correctly located.

Boost someone is linked to peripheral circulation a person. If you have a low draw, you have the possibility of having a weak pulse. As we know, a weak pulse not help Pulse Oximeter measure blood oxygen levels. Fortunately, some versions of oximeters have an infusion of gauge to determine the movement of the person. It can know in the body where the pulse will be strong. For example, if the momentum is difficult to find in the hands or fingers, the device can be set in the earlobe or the bridge of the nose.

Other factors that can manipulate oximetry readings are light in the room, and a patient is shivering uncontrollably. Since the device also uses Lightwave to operate, a brightly lit room can affect the outcome of the results. In addition, when a patient is shivering cold or shock, it can modify the readings.

Oximeter is really useful and is regarded as a revolutionary medical invention. However, to minimize this device one should be able to know all its capabilities and limitations.