What can be a consequence of over-ventilation?

Over-ventilation can lead to hyperventilation, which occurs when a patient breathes too rapidly or deeply. This excessive breathing results in a significant decrease in carbon dioxide (CO2) levels in the blood, causing a condition known as respiratory alkalosis. Respiratory alkalosis is characterized by a higher blood pH due to the low partial pressure of carbon dioxide, which may lead to symptoms such as dizziness, tingling in the extremities, and even changes in consciousness.

In clinical practice, it is essential to maintain a balance in ventilation to ensure that CO2 levels remain within normal limits. Over-ventilation disrupts this balance, emphasizing the importance of monitoring ventilation rates and tidal volumes to prevent significant respiratory alkalosis and its associated complications. The other options do not accurately reflect the physiological responses or consequences associated with over-ventilation.