For a client with suspected increased intr

问题单项选择题

For a client with suspected increased intracranial pressure (ICP), a most appropriate respiratory goal is to

A. prevent respiratory alkalosis.
B. lower arterial pH.
C. promote carbon dioxide elimination.
D. maintain partial pressure of arterial oxygen (PaO₂) above 80 mmH

答案

参考答案：C

解析：The goal of treatment is to prevent acidemia by eliminating carbon dioxide. That is because an acid environment in the brain causes cerebral vessels to dilate and therefore increases ICP. Preventing respiratory alkalosis and lowering arterial pH may bring about acidosis, an undesirable condition in this case. It isn’t necessary to maintain a PaO₂ as high as 80 mmHg; 60 mmHg will adequately oxygenate most clients.