Which of the following statements regarding the use of M-mode imaging during lung
sonography is correct? - ANSWER--M-mode imaging documents motion over time.
-M-mode imaging is a useful adjunct to help identify and document pleural lung
sliding.
-The Seashore sign is the expected pattern in normal patients.
Which of the following statements regarding the cardiopulmonary vasculature is
correct? - ANSWER--The pulmonary veins return blood to the left atrium of the heart.
-The pulmonary arteries deliver deoxygenated blood to the lungs.
-Gas exchange occurs at the level of the pulmonary capillaries.
B-line artifact always indicates the presence of lung pathology. - ANSWER-False
Which of the following statements regarding transducer selection and machine
settings for pulmonary imaging is correct?
Which of the following structures comprise the chest wall? - ANSWER--ribs
-External intercostal muscles
A-line artifacts are hyperechoic, horizontal lines that appear at regular intervals deep
to the pleural line and are a type of reverberation artifact. - ANSWER-True
Which of the following will result in the absence of lung sliding during lung
ultrasonography? - ANSWER--Cessation of breathing (no respirations)
-Significant gas accumulation between the visceral and parietal pleurae
-Tight adherence of the visceral and parietal pleurae
Which of the following statements regarding lung sonography is correct? -
ANSWER--Ribs are highly echogenic and reflect sound waves.
-Gas-filled lungs scatter sound waves and limit sonographic visualization of lung
tissue.
The space between the parietal and visceral pleurae __________. - ANSWER--often
contains a trace amount of physiologic fluid
-is a potential space
Which of the following statements regarding lung-imaging artifacts is correct? -
ANSWER-Lung sliding is typically absent in the presence of a pneumothorax.
Lung parenchyma is composed of which of the following? - ANSWER--Bronchial
airways
-Capillaries
-Epithelial alveolar cells