A patient presents with a pH of 7.2, PaCO2 of 60 mmHg, and HCO3- of 24 mEq/L. What is the most likely diagnosis?

A Respiratory acidosis with metabolic compensation ✓
B Metabolic acidosis with respiratory compensation
C Respiratory alkalosis with metabolic compensation
D Mixed respiratory and metabolic acidosis

Explanation

The patient's pH is low, indicating acidosis. The high PaCO2 suggests a respiratory component, while the normal HCO3- level suggests that there is some degree of metabolic compensation.

Source

Harrison's Principles of Internal Medicine
Electrolytes and Acid-Base Balance Acid-Base Balance Arterial Blood Gas Interpretation Hard MEDICAL Confidence: high