Which of the following can help avoid the problem of arterial blood sample contamination with air?
1) Discarding frothy samples
2) Fully expelling any bubbles
3) Mixing before expelling air
4) Capping syringe quickly
A)2 and 3 only
B)1, 2, and 4 only
C)1 and 4 only
D)1, 2, 3, and 4

Question

Quizplus · Accepted Answer

Discarding frothy samples (1) can help avoid the problem of arterial blood sample contamination with air, as frothy samples are likely to have air bubbles. Fully expelling any bubbles (2) is also important, as even small amounts of air can significantly alter the test results. Capping the syringe quickly (4) can prevent air from entering the sample after it has been drawn. Mixing before expelling air (3) may actually introduce more air into the sample, so it is not necessary to avoid arterial blood sample contamination with air.

Which of the Following Can Help Avoid the Problem of Arterial