![]() ![]() (E) completely unpredictable from one level to anotherġ59. If one measured pleural pressure in a standing human, one would find that the pressure was (D) increase Pa O 2 in the nondependent lungġ58. (C) increase blood flow and perfusion to the dependent lung (B) decrease blood flow in the dependent lung, i.e., placement of a ligature on the pulmonary artery (A) lung recruitment maneuver in the dependent lung All of the following are effective ways to improve oxygenation during one-lung ventilation EXCEPT She has a right-sided double-lumen endotracheal tube in place. A 57-year-old woman is undergoing thoracotomy for resection of her left lower lobe because of a small-cell tumor. (E) the P O 2 is lower at the apex compared to the baseġ57. (C) the ventilation/perfusion (V/Q) ratio is higher at the apex (B) the ventilation is greatest at the apex (A) the blood flow is greatest at the apex Carbon dioxide transport involves all of the following EXCEPT A double-lumen tube is used for anesthesia in patients with severeġ55. Measurements that can be obtained by spirometry include all of the following EXCEPTġ54. A 60-year-old man with COPD and an 80-pack-year smoking history is scheduled to undergo pulmonary function testing. (B) increases in lower respiratory system complianceġ53. During mechanical ventilation proximal airway pressure will increase with (E) due to low cardiac output in individuals with obesityġ52. (D) mediated by metaboreceptors located in muscle (B) mediated by J-receptors during pulmonary edema (A) influenced by chemoreceptors that are located in the medulla ![]() ![]() ![]() All statements in regard to the sensation of dyspnea are correct EXCEPT dyspnea may be: (E) the pressure difference between the alveoli and atmosphere is zeroġ51. (D) the total pulmonary vascular resistance is very high (C) the pressure difference between the alveoli and the intrapleural space is zero (B) chest wall elastic forces are greater than the lungs elastic recoil Select the ONE lettered answer or completion that is BEST in each case.ġ50. DIRECTIONS (Questions 150-235): Each of the numbered items or incomplete statements in this section is followed by answers or by completions of the statement. ![]()
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