A Nurse Is to Draw a Blood Sample for Laboratory

question 15

Multiple Choice

A nurse is to draw a blood sample for laboratory analysis from a multilumen central venous catheter. When performing this procedure, which step should the nurse take first?

• A)Clean the port of the lumen with alcohol and allow it to dry.
• B)Flush blood out of the pigtail or cap following the procedure.
• C)Turn off infusates containing glucose or electrolyte for a full 1 minute prior to the blood draw.
• D)Flush the lumen with sodium chloride after the sample is obtained.

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Definitions:

Variance Inflation Factor

A measure used in statistics to identify the degree of multicollinearity in a set of regression variables.

Multicollinearity

A statistical phenomenon in which predictor variables in a multiple regression model are highly correlated, potentially diminishing the reliability of the estimates.

Multiple Linear Regression

An analytical approach that leverages various predictor variables to determine the outcome of a target variable.

Regression Analysis

A statistical method for estimating the relationships among variables, typically one dependent variable and one or more independent variables.