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.
A total of 25 albums have sold 5 million or more copies in the last 10 years. Four artists have reached that plateau with two albums in this period: Eminem, 50 Cent, Taylor Swift and Josh Groban. (Groban, somewhat surprisingly, is the only artist with two albums among the 20 best-sellers of the last 10 years.