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Tuesday, 27 May 2014

Insights On Wrist Pulse Oximeters

By Marci Glover


Oxygen saturation (SpO2), which is the measure of oxyhaemoglobing in blood, is a very important measurement as it shows the extent of blood oxygenation. The measurement was undertaken traditionally by invasely taking blood samples. The method was rather in-ideal and unable to provide clinicians real-time measurements. The need for a noninvasive approach to measuring oxygen saturation resulted in the development of wrist pulse oximeters.

A pulse oxymeter is simply a device that non-invasively measures the arterial blood oxygen saturation and the pulse rate. The technique enables clinicians to determine SpO2 in people that are sedated, unconscious, unaesthetic or not able to regulate their own supply of oxygen. This avoids irreversible tissue supply. They are widely used in medical clinics, hospitals, homes and operating rooms.

Their medical application ranges from people with chronic obstructive pulmonary disease (COPD) to patients suffering from asthma, emphysema and other such diseases and conditions. As a preventive device, it is used by pilots and mountain climbers of high altitudes to guard against hypoxia. Athletes, while training in higher altitudes, utilize wrist Oximeters because the oxygen level decline can increase the red blood cells and thus increasing his endurance.

These measuring devices are advantageous and convenient. Their small size renders them portable and mobile, coupled with the fact that there is no demand for an external power supply. Continuous monitoring is also possible as a result of their personal attachment. In addition, they come in absolutely lightweight and without long cables that prove cumbersome and interfering.

Their simplicity makes them easy to operate. To operate such simple equipment, one does not employ a lot of technical know-how and expertise. The only part that demands for some minor technical know how is in transferring the data. Taking readings from the screen is also quite simple as a result of their big display. This is completely contrary to the other Oximeters, such as finger based which have small displays and views of saturation levels.

In terms of affordability, the wrist based meters are fairly priced. Their mid-prices make them relatively cheap compared to their handheld and finger counterparts. Also, they can be applied by virtually all age groups, both adults and pediatric. Selecting a particular device depends on the size of your finger and your unit ability to withstand various sizes and types.

The equipment also offers data storage. They are capable of keeping data and being programmed to provide readings within set time frames to facilitate for the reading of saturation levels. They record extensive oxygen and heart rate data and require software to enable them to download and make reports on computers installed with windows.

However, they also have their own setbacks when compared with other applications. For example, the equipment lacks alarm. Their use is primarily for sleep screening, and that is why alarms are not employed. When alarm service is required, handheld and tabletop Oximeters are preferred. Though the instrument offers spot checks, it is not the most ideal when the primary need is spot checking.




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