A hospital scene with countless amounts of sick children is not anything new to me since my younger brother was in and out of the hospital every month. Because my younger brother was prone to having a seizure at any given time at any given day, he needed someone looking after him at all times
The hospital with painful screams of sick children is not a new scene to me because I was frequently in and out of it with my younger brother who was prone to having a seizure at any given moment at any given day or place. I had to take my turns of looking after him quite often.When it was my time to watch after my brother, several concerns came to mind, yet when it came down to caring for my younger brother, all of my worries disappeared and the only thing that matter was helping my him on the road to a speedy recovery.
... what were those concerns? If you mention that, then you need to tell the reader what they are.
I made sure he was hydrated
I needed to ensure he was not dehydrated.