What is an indication for intubation?

Intubation is primarily indicated when a patient is unable to protect their airway, which is often due to a loss of consciousness or compromised airway reflexes. The inability to protect the airway increases the risk of aspiration and obstruction, making it critical to secure the airway through intubation. This procedure ensures that the patient receives proper ventilation and oxygenation, which is essential for survival, especially in emergencies.

The other options, such as high blood pressure, severe headache, and elevated heart rate, do not directly relate to airway management issues. While these conditions may indicate underlying health problems that require medical attention, they do not inherently compromise the ability to maintain a patent airway, which is the crucial factor for justifying intubation.