Pulse Oximeters: What They’re For and How They Work
a pulse oximeter is a medical device used to monitor blood oxygen saturation and heart rate. Not long ago, such devices were found almost exclusively in hospitals, but today they’ve become more popular than smartphones. This is because a pulse oximeter can detect signs of respiratory distress—a likely symptom of pneumonia. And monitoring your health during the coronavirus pandemic is an extremely vital task, especially for people with acute respiratory viral infections (ARVI) and those in high-risk groups. If you’ve decided to buy a pulse oximeter , you should visit the “Pharmex” online medical equipment store.
Indications for pulse oximetry
In a hospital setting, the device allows doctors to determine the severity of respiratory failure and assess whether the patient requires supplemental oxygen via a mask or mechanical ventilation. In cases of suspected pneumonia, doctors consider the blood oxygen saturation level when deciding whether to hospitalize the patient and planning their treatment strategy.
How does it work?
A pulse oximeter consists of a monitor and a sensor that tracks the pulse. The device provides information on the following parameters:
- Oxygen saturation is the process by which blood becomes saturated with oxygen. In this process, the protein hemoglobin—which is found in red blood cells—is essential for transporting oxygen. At the same time, hemoglobin binds most effectively with oxygen as it passes through the lungs.
- Heart rate. The device measures the number of heartbeats per minute. Typically, measurement intervals range from 5 to 20 seconds.
A portable pulse oximeter is practical for home use, as it is easy to use and the results are immediately displayed on the monitor. All you need to do is position the sensor correctly, sit still, and measure for five minutes.
Who needs a pulse oximeter?
It is advisable for people with chronic respiratory diseases, heart failure, and, of course, patients who use oxygen masks during treatment to have this device at home. In such cases, a pulse oximeter will undoubtedly help monitor their health.
