As Part of a Preoperative Work Up, a Patient Has

question 6

Multiple Choice

As part of a preoperative work up, a patient has a prolonged APTT. Because of this, you are certain that:

• A) The patient will bleed excessively during surgery.
• B) The patient is receiving heparin.
• C) The patient is therapeutically anticoagulated with warfarin.
• D) The patient has a LA and is at higher risk for thrombosis than most people while recovering from surgery.
• E) None of the above; clinical information and additional testing are needed.

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Definitions:

SRS

Simple random sampling, a basic probabilistic method ensuring each member of a population has an equal chance of being included in the sample.

Statistically Significant

Refers to a result that is unlikely to have occurred by chance alone, according to a predefined significance level, often indicating a strong evidence against the null hypothesis.

Hypotheses

Plural of hypothesis; propositions or assumptions made for the sake of argument that are tested through research or experimentation to be proven or disproven.

Z Statistic

The Z statistic is a measure used in statistics to describe the distance in standard deviations a data point is from the mean of a data set.