Dilated Pupils?

I was diagnosed this year with Supraventricular Tachycardia, and they ruled the cause as an imbalance of adrenaline. I had another attack this morning, and my mother knew when I walked into the kitchen that I was having one. She simply asked me, "Episode? Your pupils are dilated." I was standing in the kitchen which was bright [obviously, they're making our Thanksgiving dinner!] so I have a question.

I know it's normal for pupils to dilate from the 'fight or flight' response of adrenaline, but is it normal for my pupils to completely dilate [almost no iris] from my SVT?