hi, my son is 19 he had stroke like symptoms right side numbness then couldnt speak properly or comprehend what pictures were. they are treating as tia. he also had a echo done and has systolic dysfunction of left ventricle his ef was30% then had a repeat echo and it was 50% but no other tests were done on heart should he have a stress test or mri done to see how his heart works under stress he also had a ekg that showed tachacardia when he was having tia symptoms i am worried and dont know if i should push for more tests thanks