<prompt> A 75-year-old woman was recently started on furosemide to treat pedal edema. She describes a loss of energy and a light-headed sensation when arising from a seated position. Her arterial blood gases indicate pH of 7.53 PaCO2 of 52 mmHg, HCO3- of 32 mEqL.Serum chemistries show the following levels: Na 129 mEqL Cl- 90 mEqL K 3.0 mEqL Glucose 120 mgdL These findings are suggestive ofMetabolic alkalosisMetabolic acidosisRespiratory acidosisRespiratory alkalosis  <response>: pH 7.35 and PaCO2 40 mm Hg indicate metabolic acidosispH 7.35 and PaCO2 40 mm Hg signify respiratory acidosispH 7.45 and PaCO2 40 mm Hg indicate a metabolic alkalosispH 7.45 and PaCO2 40 mm Hg signify respiratory alkalosisThe pH is 7.35 Therefore, it is a case of alkalosis.The PaCO2 is 40 mm Hg; Therefore, the process is metabolic alkalosis. pH 7.45 and PaCO2 40 mmHg indicate a metabolic alkalosis This is confirmed by the bicarbonate level 32 mEqL 