Chapter 25: Pleural Diseases

Chapter 25: Pleural Diseases

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. How much pleural fluid does a normal healthy adult have in each hemithorax?

ANS:  B

The average person has approximately 8 mL of pleural fluid per hemithorax.

DIFF: Recall

DIF:    Recall             REF:   p. 563            OBJ:   1

2. Which of the following statements about pleural fluid is FALSE?

ANS:  A

The average person has approximately 8 mL of pleural fluid per hemithorax. It is estimated that this pleural fluid has a total protein concentration similar to that of interstitial fluid elsewhere in the body: between 1.3 and 1.4 g/dL. In human beings, the pleural spaces surrounding each lung are completely independent, being separated by the mediastinum.

DIF:    Recall             REF:   p. 563            OBJ:   1

3. At what point is intrapleural pressure most negative?

ANS:  C

The pleural space is under negative pressure except during forced expiration. The intact thoracic rib cage provides elastic recoil pressure outward, whereas the intrinsic recoil pressure of the lung is inward toward the lung hilum. The diaphragm further decreases the intrapleural pressure below the atmospheric pressure to allow inspiration to occur.

DIF:    Recall             REF:   p. 563            OBJ:   1

4. Pleural fluid with a total protein concentration of less than 50% of the serum total protein level is one of the indications of transudative pleural effusion.

ANS:  A

A pleural fluid total protein concentration less than 50% of the serum total protein level and lactate dehydrogenase (LDH) values in the pleural fluid less than 60% of the serum value indicate the presence of a transudative pleural effusion.

DIF:    Recall             REF:   p. 564            OBJ:   2