<prompt> A 44-year-old male presents with left arm and leg weakness. On assessment, he has significant weakness MRC 25 of the left upperlower limb in addition to sensory and visual neglect. He is treated for a right middle cerebral aery territory stroke. Which of the following investigation is likely to be least helpful in determining the cause of the stroke?EEGLipid profileCarotid aery dopplerAutoimmune panel  <response>: Visual neglect- Coical feature Coical stroke in the patient EEG is not recommended in cases of CVA. It is used in cases of Epilepsy and seizures. Lipid profile- tells us about atherosclerosis which is one of the leading cause for developing ischemic stroke. Carotid aery doppler- also helps to identify atherosclerosis Autoimmune panel- Antiphospholipid Ab syndrome Recurrent aerial venous thrombosis also contribute to developing ischemic stroke, so can be used. These along with ECG, TTE TEE are recommended for diagnosing of acute cerebrovascular accident CVA, coical stroke in MCA. 