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How The Heart Works

 

 

 

Many people do not know how the heart functions. We know that it is working. To understand PPCM, you have to understand how the heart works. Your heart is a pumping muscle that works nonstop to keep your body supplied with oxygen-rich blood. Signals from the heart's electrical system set the speed and pattern of the pump's rhythm. Vales keep the blood moving in one direction through the heart's four chambers.

 

How Heart Failure Affects The Body:

When the heart doesn't pump enough blood, hormones ( body chemicals ) are sent to increase the amount of work the heart does. Some hormones make the heart grow large. Others tell the heart to pump faster. As a result, the heart may pump more blood at first, but it can't keep up with the ongoing demands. So, the heart muscle becomes more damaged. Over time, even fewer blood pumped through the heart leads to problems throughout the body. 

 

What is Ejection Fraction?

Ejection fraction (EF) measures how much blood the heart pumps out (ejects). Measured to help diagnose heart failure. A healthy heart pumps at least half of the blood from the ventricles with each beat. It means an average ejection fraction is around 50% or more.

 

The aorta carries oxygen-rich blood to the body.

The right coronary artery supplies blood to the bottom, right side, and back of the heart muscle.

The pulmonary artery pumps blood to the lungs.

The left coronary artery supplies blood to the front, left side, and back of the heart muscle.

It has three (3) parts:

1. Circumflex coronary artery

2. Left main coronary artery

3. Left anterior descending coronary artery

The right atrium receives blood from the body.

The tricuspid valve prevents blood from returning to the atrium.

The right ventricle pumps blood to the lungs for oxygen.

The heart's electrical system is made up of nodes and pathways.

The left atrium receives oxygen-rich blood from the lungs. The mitral valve prevents blood from returning to the atrium.

The left ventricle pumps oxygen-rich blood to the body.

The aortic valve prevents blood from returning to the ventricle.

The pulmonic valve prevents blood from returning to the ventricle.