The Magpies arrived at Loftus Road with their top-flight status still in jeopardy and fell behind to a debatable Loic Remy penalty after 11 minutes.
But they were ahead before half-time as QPR defender Jose Bosingwa twice handed them crucial goals. First needlessly tugged on Hatem Ben Arfa's shirt to give away a penalty, which the Frenchman powered home, before a calamitous moment resulted in Yoan Gouffran being left to roll in the winning goal.
Bosingwa, who was jeered by the home fans, was withdrawn at half-time and while Newcastle had to hang on after goalkeeper Rob Elliot saw red for a second caution the visitors got the points to ensure they will stay up.
"I'm very pleased. It was a very important game for this football club. Particularly this year with the extra finance of staying in the Premier League," Pardew said.
"I thought the first 10 minutes we were almost playing with a noose around our neck we were so tense and tight and it took a decision by the referee.
"I don't really care if Arsenal win 4-0 [next weekend], If I'm honest, I'm sure Spurs will - but I only care that our fans enjoy themselves."
Pardew once again hit out at suggestions over the last month that his squad had been divided within the dressing room and was pleased with the spirit shown by his players.
"The accusations have been so ridiculous," he added. "You don't get a draw at West Brom and West Ham and a win here if you've got rifts going on.
"Their penalty looked a bit dubious to me and I thought ours looked dubious but once that went in I thought we settled down on a difficult pitch and played quite well."
- Sports & Recreation
- Jose Bosingwa
- Hatem Ben Arfa
- Yoan Gouffran
- Loic Remy