What vital sign should be monitored constantly in a patient experiencing a seizure?

Monitoring the respiration rate is crucial in a patient experiencing a seizure. During a seizure, the patient's airway can become compromised due to various factors, including muscle contractions, potential loss of consciousness, and the possibility of the tongue obstructing the airway. By keeping a close eye on the respiration rate, you can assess whether the patient is breathing adequately and if additional interventions, such as providing oxygen or ensuring the airway is clear, are necessary.

Maintaining adequate oxygenation is vital as seizures can lead to periods of apnea or ineffective breathing. If the patient is not breathing properly, rapid intervention can prevent further complications, such as hypoxia, which can lead to brain injury or other serious conditions. Thus, constant monitoring of the respiration rate provides critical information regarding the patient's immediate respiratory status during and after a seizure.