A Junctional Escape Beat Occurs When

question 74

Multiple Choice

A junctional escape beat occurs when:

• A) the AV junction becomes irritable and temporarily overrides the SA node.
• B) there is a conduction block between the SA node and AV node.
• C) there is an accessory pathway that causes reentry of the impulse at the AV node.
• D) the rate of the SA node is slower than that of the AV node.

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Definitions:

SSR

Sum of Squared due to Regression, indicates the proportion of variance in the dependent variable that is predictable from the independent variable(s).

SSE

Sum of Squared Errors, a measure used in statistics to quantify the difference between observed and predicted values.

Test Statistic F

A ratio of variances used in the context of an F-test in statistical analysis, to compare the variances of two samples or treatments.

SSR

Sum of Squares for Regression, a statistical measurement that represents the variation explained by the independent variables in a regression model.