Lung Step 16 Part 4 Pleural Effusion 1. In a supine patient, where is the most accurate location to evaluate for quantification of pleural fluid?* A. Posterior lung region B. Lateral/Axillary lung region C. Anterior lung region 2. When evaluating pleural effusions, what structure is most important to identify?* A. Heart B. Pleural line C. Lung line D. Diaphragm 3. Which of the following is not a component of loculated pleural effusion?* A. Complex B. Occupies non-dependent position C. Simple D. Does not shift with changes in position 4. What is the sinusoid sign?* A. Interpleural respiratory variation on M-mode B. Interpleural respiratory variation on B-mode C. Interpleural respiratory variation on Doppler 5. What is the curtain sign?* A. Intermittent obstruction of window by inflating air containing lung B. Thickening of line between liver and kidney C. Effusion pattern that looks like a curtain D. Shadow due to ribs with respiratory variation