Pulse Oximetry is a technique designed to measure the blood oxygen level and heart rate. Finger pulse oximeters detect changes in pulse and blood oxygen level giving you the chance to take control of the situation. Just clip on the finger pulse oximeter to get the readings in a short while. It is especially useful for patients with COPD, asthma, congestive heart failure or other health issues. Pulse oximeters provide a painless way to measure oxygen carried by the blood in the body. They are small and lightweight for added convenience. Pulse Oximetry can assist medical professionals in decision making but they cannot be used alone to diagnose the underlying causes. Pulse rate is also displayed in pulse Oximeters. Normal pulse rate measurements range from 60-80 beats per minute in adults. While exercising heart rate may slightly increase and blood oxygen level may drop but it should not be less than 90 percent.
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A finger pulse oximeter use infra-red light to detect oxygen in the blood. The equipment is supplied with sensors that measure the gas in the blood based on how the light passes through the finger. The result is then displayed on the screen.
Values of the pulse oximeters i.e. oxygen saturation (the amount oxygen carried by the blood compared to its maximum capacity.) may vary when there is a change in the activity level of the person throughout the day. To determine your normal value you must check the blood oxygen level 4 to 5 times a day and take record of the values along with the activities you do prior to checking.
A need for oxygen supplementation is indicated in patients with acute respiratory disorders like influenza or an asthma attack if the SpO2 drops below 92 percent.In case of patients with chronic respiratory disorders like COPD, further investigation or long term oxygen therapy is recommended if the SpO2 drops below 92 percent.
