The Basic steps of Oximetry
Since the existence of medicine and technology
, these two sciences have been intertwining and collaborating to provide ground-breaking methods and devices that can lengthen one's life, or give convenience to people's lives.
The latest fruit of their union is the
pulse oximeter, which made measuring the oxygen in blood easier. Before this device was invented, measurement can only be done by drawing blood from an artery, which is probably a critical method for distressed patients. And aside from being a time-consuming process, it is also dangerous when done improperly.
On the other hand, oximetry proved its great dependence to provide a fast, safe, and no-body-trauma procedure of knowing the blood oxygen saturation. Although manual procedure of counting Arterial Blood Gases (ABG) provides more accurate details, oximetry offers the arterial saturation of oxygen (SaO2) on the patient in the quickest way while assuring that they do not undergo any further medical conditions.
However, it is important to remember that while oximeters do provide by-the-second information and are quite indispensable during emergencies, there are cases when the said method is not applicable. Some chronic conditions like the Chronic Obstructive Pulmonary Disease (COPD) make oximetry readings unreliable due to the nature and treatment of the disease. With COPD the body struggles to ventilate and therefore becomes less sensitive to the rising CO2, despite the presence of oxygen sensors (baroreceptors) that detect low oxygen levels in the arterial blood - which also triggers the medulla oblongata to increase the rate and depth of breathing.
Other issues that make oximetry readings false include a person being exposed to carbon monoxide, which gives the apparatus a false high reading because hemoglobin is saturated with CO. The same is true if a person has too few or too many red blood cells. Fewer RBCs mean less oxygen available to tissues, but will show a normal reading with a pulse oximeter. Polycythemia (too many RBCs) would show a low reading with the pulse ox, but still have a respectable amount of oxygen available to the tissues. In the strictest sense of the above examples, oximeters, though very efficient and fast, strictly provide reading of the amount of oxygen in the blood under normal circumstances.
But the reason why most people acquire an oximeter is basically because anyone can utilize it. Oximeters come with manual instructions so no heavy training is needed. Conveniently created, most oximeters are built with just one button and only the same size as an old cassette tape so it's really easy to use and carry. The recent styles of the device, which are used in homes, are streamlined and a lot easier to utilize.
Pulse oximetry is done on a fingertip and measures through the nail bed. When calibrated regularly and used appropriately, its benefit of being handy comes along with reliability. Furthermore, when readings can't be done in the hands or feet, a special adhesive probe is provided in order to take measures from the patient's earlobe or nosebridge.
Yes, ABG measurements are exact even though it requires blood drained from an artery, yet this can actually lead to complications like hematoma or artery laceration. With oximeters, the measurement can be done perfectly without the dangers of invasive blood collecting that can further distress a patient's condition. Concord Health Supply, Inc. provides this state-of-the-art device that can aid people who want to keep their oxygen in blood on track. Visit their website today to have one for yourself and for loved ones.
The Basic steps of Oximetry
By: Mariecarz David
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