Performing Electroconvulsive Therapy and Assessing Seizure Efficacy via Pupillary Response

Begin with an anesthetized patient diagnosed with depression, fitted with adhesive pads on the temples for electroconvulsive stimulation.

In the brain, the electrical current activates neuronal sodium channels, causing rapid sodium influx.

This leads to neuronal depolarization and triggers neuronal firing.

Excessive synchronized firing releases excitatory neurotransmitters, resulting in persistent neuronal activation and inducing a seizure.

Seizure activity enhances the release of neurotrophic factors, promoting neurogenesis and improving neuronal communication, which helps alleviate depression-like symptoms.

Additionally, seizure activity stimulates the sympathetic nervous system, causing pupil dilation.

Immediately after seizure cessation, position an automated infrared pupillometer over one eye to measure the pupillary response.

Activate the device to emit white light to constrict the pupil.

In the patient, the absence of pupil constriction after light exposure indicates prolonged sympathetic activation and adequate seizure induction.

After anesthetizing the patient, begin the electroconvulsive therapy or ECT procedure by using an ECT instrument set at an initial electrical stimulus dose