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2. Cardiac shunt - Wikipedia

   en.wikipedia.org/wiki/Cardiac_shunt

   There are four chambers in a heart: an atrium (upper) and a ventricle (lower) on both the left and right sides. [1] In mammals and birds, blood from the body goes to the right side of the heart first. [2] Blood enters the upper right atrium, is pumped down to the right ventricle and from there to the lungs via the pulmonary artery. [3]

3. Coronary artery disease - Wikipedia

   en.wikipedia.org/wiki/Coronary_artery_disease

   Coronary artery disease (CAD), also called coronary heart disease (CHD), or ischemic heart disease (IHD), [13] is a type of heart disease involving the reduction of blood flow to the cardiac muscle due to a build-up of atheromatous plaque in the arteries of the heart. [5] [6] [14] It is the most common of the cardiovascular diseases. [15]

4. Heart - Wikipedia

   en.wikipedia.org/wiki/Heart

   Heart failure is the result of many diseases affecting the heart, but is most commonly associated with ischemic heart disease, valvular heart disease, or high blood pressure. Less common causes include various cardiomyopathies. Heart failure is frequently associated with weakness of the heart muscle in the ventricles (systolic heart failure ...

5. Dilated cardiomyopathy - Wikipedia

   en.wikipedia.org/wiki/Dilated_cardiomyopathy

   Illustration of a Normal Heart vs. Heart with Dilated Cardiomyopathy. The progression of heart failure is associated with left ventricular remodeling, which manifests as gradual increases in left ventricular end-diastolic and end-systolic volumes, wall thinning, and a change in chamber geometry to a more spherical, less elongated shape.

6. Coronary arteries - Wikipedia

   en.wikipedia.org/wiki/Coronary_arteries

   Coronary artery disease (CAD) or ischemic heart disease are the terms used to describe narrowing of the coronary arteries. [8] As the disease progresses, plaque buildup can partially block blood flow to the heart muscle. Without enough blood supply , the heart is unable to work properly, especially under increased stress.

7. Atrium (heart) - Wikipedia

   en.wikipedia.org/wiki/Atrium_(heart)

   Humans have a four-chambered heart consisting of the right and left atrium, and the right and left ventricle. The atria are the two upper chambers which pump blood to the two lower ventricles. The right atrium and ventricle are often referred to together as the right heart, and the left atrium and ventricle as the left heart.