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zden, D., & Grgl, R. S. (2015). Effects of open and closed suction systems on the haemodynamic parameters in cardiac surgery patients.

Question 16 - What was the purpose of the study?

Question 17 - What was the independent variable?

A. Heart rate

B. Type of suctioning system

C. Mean arterial pressure

D. Oxygen saturation

E. Blood gases

Question 18 - What were the dependent variables?(There is more than one)

A. Mean arterial pressure

B. Oxygen saturation

C. Blood gases

D. Suctioning system

E. Heart rate

Question 19 - What level of measurement was the independent variable?

A. Nominal

B. Ordinal

C. Interval

D. Ratio

Question 20 - What level of measurement were the dependent variables?

A. Nominal

B. Ordinal

C. Interval

D. Ratio

Question 21 - Of the 258 patients admitted during the timeframe of the study they selected 120 from a list of previously designated surgical patients.This is an example of what type of sampling method?

Question 22 - When were the hemodynamic parameters measured?

Before ES

A. After ES

B. 5 minutes after ES

C. 15 minutes after ES

D. All of the above

E. None of the above

Question 23 - Look at table 1.Which group had a higher PaO2 level before any intervention at all?

Question 24 - What happened to the average PaO2 level for patients who had open ES from baseline to as soon as the suctioning was terminated?

A. Increased

B. Decreased

Question 25 - Look at table 1.What happened to the average PaO2 level for patients who had closed ES from baseline to as soon as the suctioning was terminated?

A. Increased

B. Decreased

Question 26 - Look at table 1.What happens to the average PaO2 level in the closed ES group over time?

A. Increased

B. Decreased

Question 27 - If the researchers had missed the significance of the drop in the average PaO2 level within the open ES group what type of error would this be?

A. Type one error

B. Type two error