Why are bone changes and deformities common findings in ?-thalassemias?
a. The globin chain synthesis is increased.
b. The impaired globin chain synthesis causes erythroid hypoplasia.
c. The impaired globin chain synthesis causes increased erythropoiesis resulting in bone marrow expansion.
d. The impaired globin chain synthesis causes impaired oxygen delivery to the bone tissue, which causes bone deformities.
Correct Answer: C
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While initially ventilating a patient with acute respiratory distress syndrome (ARDS), the extrin-sic positive end-expiratory pressure (PEEPE) should be maintained using which of the following methods?
a. 50% of intrinsic positive end-expiratory pressure (PEEPI) b. Open lung approach c. Offset intrinsic PEEP d. Minimize mean airway pressure