Pardew knows they risk being sucked into a relegation battle.
He said: "Yes, I'm afraid that's where we are. We had a good performance the other night - I thought we played some good football, but the overriding factor was we lost.
"We have to win a game. We are desperate to win and sometimes desperation to win leads you down wrong avenues, so we have got to be careful.
"We just have to keep our heads and do our jobs, do the jobs we are meant to do. When you have lost two or three - and now four for us - you start doing other people's jobs, and it's very important just to focus on your job and do your job."