Final answer:
Immediate medical attention with anticonvulsants like diazepam is necessary for an actively seizing patient. Diazepam helps control seizures and prevent brain damage, and understanding the patient's history of epilepsy is key for long-term management.
Step-by-step explanation:
To manage an actively seizing patient who has been noncompliant with his antiepileptic drug (AED), phenytoin, immediate medical intervention is critical. In a clinical setting, anticonvulsants such as diazepam may be administered to help control the seizure. This medication is not self-administered but given by a health professional to manage acute seizure episodes, with the aim of improving long-term prognosis and reducing the risk of brain damage. It is essential to promptly address the seizure and to investigate the cause of noncompliance to prevent future episodes. The patient's medical history indicates that epilepsy developed during childhood or youth, which suggests a long-standing condition requiring ongoing management.