Julie Was Diagnosed with an Aggressive Tumor of the Thyroid

question 62

Multiple Choice

Julie was diagnosed with an aggressive tumor of the thyroid.Surgery was performed to remove the thyroid.However,post-operatively,Julie's blood calcium levels began declining to life-threatening levels.This decline is most likely due to

• A)thyroid hormone replacement therapy after the surgery.
• B)damage to the anterior pituitary during surgery.
• C)accidental removal of the parathyroid glands during surgery.
• D)improper laboratory handling of blood samples.
• E)post-traumatic stress disorder.

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Definitions:

Dependent Variable

A variable in statistical modeling or experimental design that is expected to change as a result of manipulations to the independent variable.

Slope

In mathematics, the slope describes the steepness, incline, or grade of a line, defined as the ratio of the vertical change to the horizontal change between two points on the line.

Intercept

The point on a graph where a line or curve crosses an axis, often used to determine where a function or equation equals zero.

Least-Squares Regression

A statistical method to determine a line of best fit by minimizing the sum of squares of the distances of data points from the proposed line.