The following arterial blood gas (ABG) results indicates? pH-7.19 PaCO2-65.8 mmHg Pa02-75 mmHg HCO3-26.2 mEq/L BE-(+1.6) 02 Sat - 90%
Explanation & Rationale
A. Metabolic acidosis: Metabolic acidosis is characterized by a decreased pH (7.45) and increased bicarbonate levels. The patient’s pH is significantly decreased, ruling out alkalosis. Additionally, the bicarbonate level is not elevated enough to suggest a primary metabolic alkalotic process. C. Normal ABG results: Normal ABG values include a pH of 7.35–7.45, PaCO₂ of 35–45 mmHg, and HCO₃⁻ of 22–26 mEq/L. This patient’s pH is markedly acidotic and the PaCO₂ is significantly elevated at 65.8 mmHg, indicating an abnormal acid-base imbalance. D. Respiratory acidosis: Respiratory acidosis is identified by a low pH and elevated PaCO₂ (>45 mmHg), indicating hypoventilation and carbon dioxide retention. The normal bicarbonate level suggests minimal or no metabolic compensation, indicating an acute or partially compensated state. Slightly decreased PaO₂ and oxygen saturation further support impaired gas exchange consistent with respiratory compromise.