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Flashcards in PulseOX Deck (10):
1

What 2 things are important to have when trusting the reading from a PulseOx?

The HR matches the palpated pulse.
Peaks and Valleys on the Waveform.

2

What are 2 EKG conditions can alter a reading from a PulseOx?

PVC-wont give a pulse due to inadequate filling
PEA-Electrical activity from heart that doesn't result in cardiac output.

3

What is an alternative site for a pulseox when experiencing poor perfusion or hypotension?

the ear due to brain being a priority for blood flow.

4

At the Sp02 percent is a pulseox not reliable?

80%

5

What is the accuracy of a pulseox?

plus 3 minus 3

6

What happens to a pulseox reading in the presence of MetHb?

MetHb levels of 10% or higher will result in SpO2 ~85%

MetHb levels less than 10% will result in SpO2 reduction by ~ ½ of the measured MetHb%

7

What values can be shown on a Co-Oximeter?

Oxyhemoglobin
Deoxyhemoglobin
Carboxyhemoblobin
Methemoglobin

8

What are the 2 ways a pulseox measures?

Spectrophotometry and photoplethysmography

9

What are the wavelengths that are read by the pulse ox?

660nm = Red (Deoxygenated Blood)
940nm = infrared (Oxygenated Blood)
So whatever returns the most, means that there is not a lot absorbing it. (less amount of that Cell)

10

What are the 2 ways that a pulseox transmits light through tissue?

Transmittance (finger) and Reflectance (Forehead)