72. 以下何者錯誤? (A)Obesity 會引起 expiratory reserve volume and FRC 下降, in morbid obesity DLCO 下降是由於 airway closure and atelectasis,其 ventilatory response to carbon dioxide 經常是下降的. (B)Obesity hypoventilation syndrome (OHS) 的定義: obesity (body mass index, BMI ≥30 kg/m2), chronic alveolar hypoventilation with daytime hypercapnia (awake PaCO2 ≥45 mm Hg), and sleep-related breathing disorder in the absence of any other causes of hypoventilation. (C)For aging lung, progressive decline in FVC and FEV 1 did not begin until the middle 30s, and that the subsequent decline in FEV 1 /FVC was linear with age, independent of FVC, similar in men and women (D)For aging lung: DLCO 會下降是因 membrane diffusing capacity decreases after 40 years of age