An Impulse Originating from an Ectopic Focus in the Ventricles

question 4

Multiple Choice

An impulse originating from an ectopic focus in the ventricles that is outside of the normal conduction pathway has which of the following characteristics?

• A) Slower propagation because of the syncytial arrangement of the myocardial cells
• B) Uncoordinated contraction
• C) Decrease in ejection of blood volume
• D) All of the above

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Definitions:

Row Variable

A categorical variable used in tables to categorize subjects or data points based on a specific attribute.

Column Variable

A variable represented by a column in a data table, where each row entry under that column pertains to different observations or records.

Degrees of Freedom

Degrees of freedom refer to the number of values in a calculation which are free to vary without violating the constraints of the calculation.

Chi-Square

A statistical test used to determine if there is a significant difference between observed frequencies and expected frequencies in categorical datasets.