ERA. 1  baseball, baseball game - a ball game played with a bat and ball between two teams of nine players; teams take turns at bat trying to score runs; he played baseball in high school; there was a baseball game on every empty lot; there was a desire for National League ball in the area; play ball!.
The contraction of the heart muscle starts in the two atria, which push the blood into the ventricles. Then the walls of the ventricles squeeze together and force the blood out into the arteries: the aorta to the body and the pulmonary artery to the lungs.
One theory is that adrenaline causes the heartâs arteries to narrow so much that they cut off blood flow to the muscle. Unlike a heart attack, broken heart syndrome makes part of your heart larger, temporarily. This can change how your ticker pumps, which causes the symptoms. Who Gets It?