50.  A patient with dyspnea may assume a tripod position by leaning forward with hands supported. Which of the following best explains why this posture helps alleviate dyspnea?

36. A patient with moderate to severe chronic obstructive pulmonary disease is MOST likely to demonstrate which abnormal chest radiograph finding?

31. What type of test is a six-minute walk test?

41. Given a Pa02 reading of 45 mmHg and an Sp02 reading of 75%, how would you classify this patient’s oxygenation status?

48. Which of the following conditions would be a relative contraindication to postural drainage?

37. If a metabolic disturbance causes an abnormal blood pH, which organ compensates by adjusting carbon dioxide levels?

33. How do low hemoglobin and hematocrit values impact an individual’s physiologic capacity for exercise?

39. A patient has the following arterial blood gas values: pH = 7.44, PaCO2 = 28, and HCO3¯ = 24. Which of the following statements is the MOST accurate interpretation?

40. Hyperventilation would most likely have what impact on a patient’s arterial blood gas test?

28. What psychometric property reflects a tool’s ability to detect change over time?