In which of the following conditions will you see an increase in the DLCO?
a. Pulmonary emphysema
b. Secondary polycythemia
c. Severe anemia
d. Pulmonary fibrosis
ANS: B
The DLCO may be increased in patients with polycythemia, congestive heart failure (resulting from an increase in pulmonary vascular blood volume), and elevated cardiac output. Factors that can alter the DLCO above or below the normal value are summarized in Table 20-7.
You might also like to view...
A 22-year-old was struck by a car as he was crossing the highway. You immediately notice that his right leg is deformed with bone protruding from the wound. When you ask him how he is feeling, he says that his back hurts. Which one of the following best describes the patient's chief complaint?
A) Struck by a car B) Bleeding C) Back pain D) Broken leg
Which of the following types of congenital anomalies is most common?
A) Neural tube defects B) Diaphragmatic hernia C) Heart defects D) Cleft lip and cleft palate