38. 一位72歲高血壓病人,一周前開始有咳嗽黃痰,近二天開始有呼吸困難及發燒,因此住
院。住院時: WBC 17000/μl, BUN 83 mg/dL, creatinine 2.5 mg/dL, 胸部X-光檢查有左下葉病灶。動脈血液氣體檢查(ABG): pH 7.24, PO2
95 mm Hg, PCO2
31 mm Hg,
mEq/L,從病史與ABG資料來看,下列何者為最適合的診斷?
(A) Metabolic acidosis + respiratory acidosis
(B) Simple metabolic acidosis, with well compensation
(C) Simple respiratory acidosis, with well compensation
(D) Metabolic acidosis + respiratory alkalosis