How to measure the amount of oxygen in the blood?
Our body can go without food for almost a month, without water - up to seven days, and without oxygen - only three minutes. It is for this reason that in some situations it is very important to monitor blood saturation with oxygen. Oxygen saturation (blood saturation with oxygen) is one of the parameters by which a person’s condition during an operation is assessed. In other cases, based on these data, therapy and prescriptions are prescribed and adjusted, the patient’s condition and the course of the disease are assessed. For people with impaired respiratory function, continuous monitoring of this indicator can be vital and necessary.
Fordetermine the level of oxygen saturationTwo methods are used: invasive (patient's blood sampling and subsequent laboratory tests) and non-invasive with a pulse oximeter. A pulse oximeter is a device for measuring oxygen in the blood. The industry produces these devices of several types:
• Inpatient - used in medical institutions to monitor the patient's condition. They have a large amount of memory for recording data, they can have a built-in printer and extensive functionality.
• Belt - mobile version of the device with an independent power source, a fairly extensive set of functions and alarms, which warns of deterioration in performance.
• Finger - miniature models that have functionality comparable tostationary pulse oximeters.
• Sleep monitors - for long-term monitoring of blood oxygen saturation in automatic mode. Recording results is carried out in memory. It is possible to transfer data on a computer for further detailed processing and analysis of information.
Pulse Oximeters: what they measure, where they apply
Pulse oximeters of any model measure blood saturation, heart rate, pulse bar (cardiac output), plesiogram graph. Some devices are equipped with an alarm, whose activation parameters can be programmed by the manufacturer, or can be configured.The latest models of pulse oximeters have the ability to save data over a long period of time and transfer them to computers for more detailed information processing.
The undoubted advantage of the pulse oximeter is a high response rate. It takes only a few heartbeats and the device displays the changes. This allows time to take appropriate measures to prevent the occurrence of complications.
The initial field of application of pulse oximeters is the monitoring of the patient's condition during surgery and anesthesia, today it has been significantly expanded. They are used to track oxygen saturation and heart rate during the rehabilitation of patients, to make a diagnosis, determine the severity of the condition, the expediency of sending to specialized clinics and to monitor the current state of patients with impaired respiratory functions. Due to the miniature size, lower prices, this device has become available not only for various medical institutions, but also for individuals.
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