In the steady state, cardiac output equals. venous return. Factors that cause hypereffective heart. Sympathetic stimulation can increase the effectiveness of the heart via: (2) increasing the strength of heart contraction. Factors that can cause a hypoeffective heart: (1) coronary artery blockage.
Thursday, March 19, 2015 - 11:09. Ed Sheeran has added yet another amazing accolade to his collection with the news that his global smash hit sophomore album X has hit the 2 million sales mark, joining a select band of chosen superstars to hit the same achievement.
About Ed Sheeran. Born in Halifax England, Ed Sheeran is an English singer-songwriter with an estimated net worth of $68 million. In 2008, Sheeran moved to London to pursue a career in music. In 2011, his extended independent play titled No. 5 Collaborations Project was released. It caught the attention of Jamie Foxx and Elton John.