A Patient Is Observed to Have a Rise in Temperature

question 11

Multiple Choice

A patient is observed to have a rise in temperature and chills during a transfusion.The transfusion is stopped,and a posttransfusion blood sample is carefully drawn.On receipt of this postreaction sample,the transfusion service should immediately:

• A)observe the color of serum and perform an antibody screen.
• B)observe the color of serum and perform a direct antiglobulin test.
• C)perform an antibody screen and a direct antiglobulin test.
• D)perform an antibody screen and a crossmatch.

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Definitions:

Confidence Interval

A range of values, derived from sample data, that is likely to contain the value of an unknown population parameter, with a specified level of confidence.

Null Hypothesis

A default hypothesis that there is no significant difference or effect, often symbolized as H0, to be tested against an alternative hypothesis.

Level Of Significance

A different phrasing for the threshold probability used to decide when a hypothesis test's results are too unlikely under the null hypothesis, prompting its rejection.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect exists between certain datasets or parameters.