What condition might result from elevated CO2 levels during sleep?

Elevated levels of carbon dioxide (CO2) during sleep can lead to possible hypoventilation or airway obstruction, making this the correct choice. Hypoventilation occurs when there is a reduction in the amount of air entering the lungs, leading to insufficient oxygen intake and impaired removal of CO2. This can result in a buildup of CO2 in the bloodstream, often accompanied by a decrease in blood pH, a condition known as respiratory acidosis.

In terms of airway obstruction, conditions such as obstructive sleep apnea can lead to significant fluctuations in CO2 levels during sleep. When the airway becomes blocked, airflow stops momentarily, which prevents proper gas exchange in the lungs. This results in elevated CO2 and can trigger a range of physiological responses, including arousals from sleep that may not be consciously remembered by the patient.

The other choices do not correspond to the physiological effects of elevated CO2 during sleep. Severe sleep deprivation is characterized by a lack of sleep rather than alterations in CO2 levels. Increased wakefulness can also be a result of various factors, but not directly due to elevated CO2 levels. Lastly, enhanced cognitive function is not associated with elevated CO2, as high CO2 levels can lead to confusion and decreased cognitive