What Is the Purpose of an Underwater Seal for a Thoracotomy

question 42

Multiple Choice

What is the purpose of an underwater seal for a thoracotomy tube?

• A)to maintain a pressure consistent with pressure inside the lung itself
• B)to prevent the negative pressure within the pleural space from pulling more air in through the chest tube
• C)to reduce the pressure within the pleural space
• D)to reduce the surface tension of the pleura

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Definitions:

Test Statistic

A calculated value that is used in statistical tests to determine whether to reject the null hypothesis, based on sample data.

P-Value

The probability of getting the observed value of the test statistic, or one more extreme, assuming the null hypothesis is true.

Level Of Significance

The probability of rejecting the null hypothesis when it is true, typically set as a threshold like 0.05 or 0.01 before conducting a hypothesis test.

Sample Size

Refers to the number of observations or elements selected from a population to conduct a study.