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.
Ed Sheeran Named Sexiest Singer Alive. It's been a rough year for the singer, but at least he has his millions of dollars to ease the pain. 25-year-old Ed Sheeran has taken the No. 1 spot on People With Moneyâs top 10 highest-paid singers for 2016 with an estimated $96 million in combined earnings. UPDATE 18/08/2016 : This story seems to be false. (read more)