Ventricular pacemaker cells discharge at a slower rate than the SA or AV node. While the SA node typically initiates a rate of 70 beats per minute (BPM), the atrioventricular node (AV node) is usually only capable of generating a rhythm at 40-60 BPM or less. Ventricular contraction rate is thus reduced by 15-40 beats per minute.
Littleton, CO Population and Races. As of 2010-2014, the total population of Littleton is 43,710, which is 8.35% more than it was in 2000. The population growth rate is much lower than the state average rate of 20.84% and is lower than the national average rate of 11.61%.
Littleton Public Schools in Arapahoe County, Colorado District Schools. District school information, including grade ranges, funding levels, student population and student teacher ratios for Littleton, CO 80120 elementary, middle and high schools. Includes both public and private schools in Littleton, CO 80120. Homes & Land of Douglas & Elbert Counties Including Castle Rock real estate and homes for sale in Larkspur, Parker, Highlands Ranch, and more.