What are the 2 readings on a Pulse Oximeter?

A pulse oximeter is a medical device that measures the oxygen saturation level in the blood. It is a non-invasive and painless method of measuring the oxygen level in the blood. The device is commonly used in hospitals, clinics, and homes to monitor the oxygen level in patients with respiratory problems, heart diseases, and other medical conditions. The pulse oximeter provides two readings: oxygen saturation level and pulse rate.

Oxygen Saturation Level

The oxygen saturation level is the percentage of oxygen in the blood. It is also known as SpO2 (peripheral capillary oxygen saturation). The pulse oximeter measures the oxygen saturation level by using a sensor that is placed on the fingertip, earlobe, or toe. The sensor emits two wavelengths of light, one red and one infrared, through the skin and into the blood vessels. The oxygenated blood absorbs more infrared light, while the deoxygenated blood absorbs more red light. The pulse oximeter calculates the oxygen saturation level by comparing the amount of light absorbed by the blood vessels.

The normal oxygen saturation level in a healthy person is between 95% and 100%. If the oxygen saturation level drops below 90%, it is considered low and may indicate a medical emergency. Low oxygen saturation levels can cause shortness of breath, chest pain, confusion, and other symptoms. The pulse oximeter is an essential tool for monitoring the oxygen saturation level in patients with respiratory problems, such as asthma, COPD, and pneumonia.

Pulse Rate

The pulse rate is the number of times the heart beats per minute. The pulse oximeter measures the pulse rate by detecting the changes in blood volume in the blood vessels. When the heart beats, it pumps blood through the blood vessels, causing a temporary increase in blood volume. The pulse oximeter detects this increase in blood volume and calculates the pulse rate.

The normal pulse rate in a healthy person is between 60 and 100 beats per minute. The pulse rate can vary depending on age, fitness level, and other factors. A high pulse rate may indicate a medical condition, such as anemia, hyperthyroidism, or heart disease. A low pulse rate may indicate a medical condition, such as hypothyroidism or heart block. The pulse oximeter is an essential tool for monitoring the pulse rate in patients with heart diseases, such as arrhythmia and heart failure.

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