A Patient's Platelet Count Drops 4 Days After Being Placed

question 4

Multiple Choice

A patient's platelet count drops 4 days after being placed on heparin.Select the correct interpretation.

• A)The patient has heparin-induced thrombocytopenia.
• B)The patient has benign, limited thrombocytopenia related to heparin.
• C)A bleeding time should be performed to evaluate qualitative platelet disorders.
• D)An immunoassay for heparin-dependent anti-platelet factor 4 (PF4) should be performed to distinguish heparin-induced thrombocytopenia from benign, limited thrombocytopenia related to heparin.

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Definitions:

Systematic Variance

The part of variance in a set of data that is attributable to identified sources or factors, as opposed to random or error variance.

Error Variance

Random variability in a set of scores that is not the result of the independent variable. Statistically, the variability of each score from its group mean.

Between-Groups Variance

captures the differences in means across different groups in an experiment, reflecting how much group members vary from each other overall.

Within-Group Variance

The variation of observations within a single group or category, measuring how much individual scores differ from the mean of that group.