Which of the following is a common consequence of severe hypoxemia?

Severe hypoxemia, defined as a significant drop in oxygen levels in the blood, can lead to a range of physiological consequences as the body struggles to maintain normal function. One of the hallmark effects of inadequate oxygen supply is altered mental status. This occurs because the brain is highly sensitive to changes in oxygen levels; even a short duration of hypoxemia can result in confusion, disorientation, agitation, or lethargy.

When the brain does not receive sufficient oxygen, it cannot function properly, leading to these cognitive impairments. Therefore, altered mental status is a direct result of severe hypoxemia and reflects the critical nature of oxygen availability for cerebral function. Understanding this link is vital for recognizing the severity of a hypoxic state and the necessity for prompt intervention to correct the underlying issue.