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%.
Lawton Highlights. 1  Burkburnett, TX. Population 10,915. 2  Wichita Falls, TX. Population 104,771. 3  Marlow, OK. Population 4,635. 4  Duncan, OK. Population 23,364. 5  Anadarko, OK. Population 6,786. 6  Chickasha, OK. Population 16,195.