I wasn't liking Iva's voice, but this episode has made me like it now, it fits quite well actually.
It's cool for most of the episode we could hear luffy screaming in agony, goes to show how much pain he's in. But it doesn't look like his treatment will be finished in the next episode which is kinda annoying, I understand they have to stretch these episodes as much as possible, but it does get tiring..