SAN DIEGO, Feb. 4 /PRNewswire-FirstCall/ -- ResMed Inc. (NYSE: RMD) today announced record revenue and income results for the quarter ended December 31, 2009. Revenue for the December 2009 quarter was $275.1 million, a 23% increase (a 17% increase on a constant currency basis) over the quarter ended December 31, 2008. For the quarter ended December 31, 2009, income from operations was $57.9 million and net income was $46.0 million, an increase of 34% and 36%, respectively, compared to the quarter ended December 31, 2008. Diluted earnings per share for the quarter ended December 31, 2009 were $0.60, an increase of 36% compared to the quarter ended December 31, 2008.