A nurse is cаring fоr а client in the emergency depаrtment (ED). Nurses' Nоtes 1015: 68-year-оld male client brought to the ED by partner. Client reports waking up this morning and being "unable to breathe." The client was treated for bronchitis 3 weeks ago by their primary care provider. Client reports no pain, nausea, vomiting, or difficulty urinating. Last bowel movement was yesterday. Skin is cyanotic and client is diaphoretic. Clubbing of nail beds present. Lungs are diminished in bilateral bases. Client has a productive cough. Sputum is thick whitish yellow color. Pedal pulses 2+ bilaterally. Skin turgor greater than 2 seconds. History and Physical 1015: HypertensionHyperlipidemiaHypothyroidism Bronchitis 3 weeks ago, treated with antibiotics Smoker for past 40 years; smokes 2 packs per day Reports no alcohol use Vital Signs 1015: Temperature 37.1° C (98.8° F)Heart rate 100/minRespiratory rate 26/minBlood pressure 164/90 mm HgOxygen saturation 84% on room air Diagnostic Results 1030: Sodium 142 mEq/L (136 to 145 mEq/L)Potassium 4.8 mEq/L (3.5 to 5 mEq/L) Calcium 9.5 mg/dL (7.6 to 10.4 mg/dL)Hgb 16 g/dL (14 to 18 g/dL)Hct 46% (40% to 52%)WBC count 7,000/mm3 (5,000 to 10,000/mm3) ABGs: pH: 7.25 (7.35 to 7.45)PCO2 50 mm Hg (35 to 45 mm Hg)HCO3- 24 mEq/L (22 to 26 mEq/L) 1045: Chest x-ray: hyperinflation of lungs with flattened diaphragm The nurse is reviewing the client's laboratory and diagnostic results. Which of the following results should indicate to the nurse that the client may have alteration in respiratory function? (Select All that Apply.)