Prioritize, prioritize, prioritize. It takes time. Remember, focused assessments, try to chart immediately after procedures if possible. Like bill4745 said, try to think ahead. Abd pain will always need a urine. Old people will always need a urine. I put IV sites in almost everybody, draw blood from the iv site and hang NS kvo. Saves time if the doctor wants a bolus. It was hard for me coming from the floor to the ED. It took a little while to figure out that I am not going to give my pts in the ED the same care that I would if I still worked on the floor. I will always do the basics, making sure my pts aren't covered in bodily secretions, making sure they are warm and dry, making sure orders are followed, and making sure they are fed if they are allowed to eat and drink. I usually do not have time for a lot of small talk, mouth care, bathing, turning q2hrs, etc.... I carry note cards in my pocket to write down times and procedures if I don't have time to chart. That way I don't have to waist time wondering when I put in that foley or gave that med. I put everyone on the monitor or at least the bp cuff and pulse ox. That way, all I have to do is look at the monitor and see my vitals q15 minutes. I also try to chart on my pts that may be admitted first. Usually you have a good idea who will be admitted and I try to keep their charting as up to date as possible in case someone has to call report for me (in case I get a trauma). I have also learned how to chart quick. All of our charting is on the computer, so I have learned how to type really, really well.
A lot of times, though, I am charting my pt's assessment and procedures as I am discharging the pt out of the computer or calling report to the floor. It happens to us all. The key is trying to remember what happened.