Respiratory failure is often associated with a(n):

Respiratory failure occurs when the lungs are unable to effectively exchange oxygen and carbon dioxide. One of the key indicators of respiratory failure is an elevated pCO2 level, which refers to an increased partial pressure of carbon dioxide in the blood. This is because the lungs are not able to remove carbon dioxide efficiently, leading to a buildup in the bloodstream. Therefore, a pCO2 level above 45 is often associated with respiratory failure.