NARCOTIC OVERDOSE
A 25-year-old man residing at sea level is brought to theemergency department after a narcotic overdose and possibleaspiration. He is placed on a pulse oximeter, and arterial bloodgases are drawn. Repeat blood gases are as follows: Arterial BloodGases FIO2 0.21 pH 7.21 PaCo2 64 mm Hg (HCO3-) 24 mEq/L Paoz 48 mmHg Vital Signs Pulse 55/min BP 100/60 Temperature 37°C RR 8/minPulse Oximetry SpO2 80%
What is the primary acid-base abnormality?
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