MrsSchmoyer Presents with a History of Heart Problems

question 14

Multiple Choice

Mrs.Schmoyer presents with a history of heart problems.She had a pacemaker placed 1 year ago and has been stable since that time.Antibiotic premedication is

• A) Needed for scaling and root planing procedures
• B) Needed for local anesthesia
• C) Needed for tooth extraction procedures
• D) Not needed for this patient

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Definitions:

50th Percentile

Also known as the median, it is the value below which 50% of the observations in a group of data fall.

N - 1

A formula used to calculate the sample variance or sample standard deviation, representing the sample size minus one.

Variance

A measure of the dispersion of a set of data points around their mean value, indicating how spread out the data are.

Measure of Variability

Statistical indices that describe the spread or dispersion within a set of numerical data, including range, variance, and standard deviation.