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%.
Wellston is a town in Lincoln County, Oklahoma, United States. The population was 825 at the 2000 census. Wellston was named by Christian T. Wells, who established a trading post on the site in 1883. The post office officially opened September 19, 1884. Wellston is located at 35Â°41â²27â³N 97Â°3â²47â³W / 35.69083Â°N 97.06306Â°W / 35.69083; -97.06306 (35.690863, -97.063185).