Prediction of the outcome of endovascular treatment in acute ischemic stroke patients

A method for monitoring or prognosing a patient suffering from acute ischemic stroke, the method comprising (i) eliciting somatosensory evoked potentials (SEPs) that are ipsilateral and contralateral to a stroke site of the patient using an apparatus, (ii) measuring the ipsilateral and contralateral SEPs with the apparatus, and (iii) evaluating a response of the patient to an endovascular treatment, wherein:

• the apparatus comprises:
• (a) one or more stimulating electrodes located on each upper limb of the patient for stimulating a median nerve, an ulnar nerve, or a combination thereof,
• (b) at least two recording electrodes located on the scalp of the patient for recording the ipsilateral and contralateral SEPs, and
• (c) a monitoring system;
• wherein the apparatus is configured to record the ipsilateral and contralateral SEPs from both hemispheres of the brain of the patient using the at least two recording electrodes;
• and
• wherein the apparatus is configured to record at least one of N20 and P25 components of the ipsilateral and contralateral SEPs using the at least two recording electrodes located on the scalp of the patient;
• and
• wherein an ipsilateral SEP having an amplitude from 60% to 100% with respect to a contralateral SEP indicates a desired response of the patient to the endovascular treatment.