Maintaining a Balance - Measuring Blood Gas (1 Viewer)

[sants]

hey guys this is kinda ergent..... i just have an assessment on this topic and yeah....any information would be appreciated. cheers

 

[coq]

what is the assessment? we have to do a prac

 

[jeff.wong]

hey guys this is kinda ergent..... i just have an assessment on this topic and yeah....any information would be appreciated. cheers

Is this what your looking for?

Analyse information from secondary sources to identify current technologies that allow measurement of oxygen saturation and carbon dioxide concentrations in blood and describe and explain the conditions under which these technologies are used


Measurement of oxygen saturation
o Arterial Blood Gas (ABG) Analysis: Takes blood from an artery and the sample is tested in a Blood Gas Analyser. The sample is tested for the concentration of oxygen, carbon dioxide and pH. The results are not immediate as there is a delay between sampling and results. Used for critically ill patients who are on ventilators, or undergoing respiratory therapy.
o Pulse Oximetry: Newer method and uses two wavelength of lights to measure the amount of absorption of light as the light passes through the finger from the light source to the photo detector. Pulse oximetry is used when conditions require rapid, continuous monitoring of arterial blood. E.g. Intensive care units.

Measurement of carbon dioxide concentrations
o Arterial Blood Gas (ABG) Analysis: Refer to above.
o Capnometer: A capnometer is another new, non-invasive device which measures the concentrations of respired gases using an infra-red beam of light. The amount of light absorbed depends on the number of carbon dioxide molecules present. A capnometer is used for monitoring changes in carbon dioxide concentrations in patients who are haemodynamically stable, but no critically ill. The benefits of a capnometer are its continuous, non-invasive monitoring.

 

[possessionless]

Is this what your looking for?

Analyse information from secondary sources to identify current technologies that allow measurement of oxygen saturation and carbon dioxide concentrations in blood and describe and explain the conditions under which these technologies are used


Measurement of oxygen saturation
o Arterial Blood Gas (ABG) Analysis: Takes blood from an artery and the sample is tested in a Blood Gas Analyser. The sample is tested for the concentration of oxygen, carbon dioxide and pH. The results are not immediate as there is a delay between sampling and results. Used for critically ill patients who are on ventilators, or undergoing respiratory therapy.
o Pulse Oximetry: Newer method and uses two wavelength of lights to measure the amount of absorption of light as the light passes through the finger from the light source to the photo detector. Pulse oximetry is used when conditions require rapid, continuous monitoring of arterial blood. E.g. Intensive care units.

Measurement of carbon dioxide concentrations
o Arterial Blood Gas (ABG) Analysis: Refer to above.
o Capnometer: A capnometer is another new, non-invasive device which measures the concentrations of respired gases using an infra-red beam of light. The amount of light absorbed depends on the number of carbon dioxide molecules present. A capnometer is used for monitoring changes in carbon dioxide concentrations in patients who are haemodynamically stable, but no critically ill. The benefits of a capnometer are its continuous, non-invasive monitoring.

thats the kind of stuff we had to know...

 

[supanerd]

In terms of this dotpoint, it's good to know the pros/cons of the Arterial Blood Gas Analysis as well as the Pulse Oxymeter.

Pros

ABG: Can measure a range of constituent levels in the blood including the acidity as well as the gases.

Pulse Oxymeter: non-invasive and easy to bring around and operate (just clip onto the finger or earlobe. Used for babies.

Cons

ABG: Invasive. You use arterial blood so they will usually insert a needle at your wrist which can be very painful.

Pulse Oxymeter: can only measure oxygen and not all the constituents like ABG can.