Heart

The heart is a muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system. The heart has four chambers: 1. The right atrium receives blood from the veins and pumps it to the right ventricle. 2. The right ventricle receives blood from the right atrium and pumps it to the lungs, where it is loaded with oxygen. 3. The left atrium receives oxygenated blood from the lungs and pumps it to the left ventricle. 4. The left ventricle (the strongest chamber) pumps oxygen-rich blood to the rest of the body. The left ventricle’s vigorous contractions create our blood pressure.

Heart burn

Heartburn is an uncomfortable but common feeling of burning or warmth in the chest. Although the pain of heartburn is felt in the chest, heartburn has nothing to do with .....

Coronary heart disease

Coronary heart disease (CHD) is a narrowing of the small blood vessels that supply blood and oxygen to the heart. CHD is also called coronary artery disease. Coronary heart disease .....

Heart Failure

Heart failure is a condition in which the heart can't pump enough blood to meet the body's needs. In some cases, the heart can't fill with enough blood. In other .....

Cardiac arrest

The heart has an internal electrical system that controls the rhythm of the heartbeat. Problems can cause abnormal heart rhythms, called arrhythmias. There are many types of arrhythmia. During an .....

Cardiac Erethism

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Coronary artery disease

Coronary artery disease (CAD) is the most common type of heart disease. CAD happens when the arteries that supply blood to heart muscle become hardened and narrowed. This is due .....

Irregular heartbeat

Heart rhythm problems (heart arrhythmias) occur when the electrical impulses in your heart that coordinate your heartbeats don't work properly, causing your heart to beat too fast, too slow or .....

Dyspnea

Dyspnea, shortness of breath (SOB), or air hunger, is the subjective symptom of breathlessness. It is a normal symptom of heavy exertion but becomes pathological if it occurs in unexpected .....

Extrasystole

A premature contraction of the heart that is independent of the normal rhythm of the heart and that arises in response to an impulse in some part of the heart .....

Tachycardia

Tachycardia is a faster than normal heart rate. A healthy adult heart normally beats 60 to 100 times a minute when a person is at rest. If you have tachycardia .....

Rhythm disturbances

The primary function of the heart is to supply blood and nutrients to the body. The regular beating, or contraction, of the heart moves the blood throughout the body. Each .....

Arteriolosclerosis

Arteriolosclerosis is a form of cardiovascular disease affecting the small arteries and arterioles. Types include hyaline arteriolosclerosis and hyperplastic arteriolosclerosis, both associated with vessel wall thickening and luminal narrowing that .....

Atrioventricular block

An atrioventricular block (or AV block) involves the impairment of the conduction between the atria and ventricles of the heart. Under normal conditions, SA node in the atria sets the .....

Precordial pain

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Beriberi

Beriberi, nutritional disorder caused by a deficiency of thiamin (vitamin B1) and characterized by impairment of the nerves and heart. General symptoms include loss of appetite and overall lassitude, digestive .....

Embolism

An embolism is a foreign body, such as a blood clot or an air bubble, that travels through the bloodstream and becomes lodged in a blood vessel, blocking the flow .....

Endocarditis

Endocarditis is an infection of the inner lining of your heart (endocardium). Endocarditis typically occurs when bacteria or other germs from another part of your body, such as your mouth, .....

LVF

LVF occurs when the left ventricle is unable to pump all the blood that is delivered to it by the right ventricle at a satisfactory rate. This diminishes the .....

Mitral regurgitation

Mitral valve regurgitation — or mitral regurgitation — happens when your heart's mitral valve doesn't close tightly, which allows blood to flow backward in your heart. When the mitral valve .....

heart attack

A heart attack occurs if the flow of oxygen-rich blood to a section of heart muscle suddenly becomes blocked. If blood flow isn't restored quickly, the section of heart muscle .....

Pericarditis

The hearts sits in the center of the chest and is surrounded by a sac called the pericardium. This sac has two layers, one that fits tightly onto the heart .....

Peripheral vascular disease(PVD)

Peripheral vascular disease (PVD) refers to diseases of the blood vessels (arteries and veins) located outside the heart and brain. While there are many causes of peripheral vascular disease, doctors .....

Raynaud disease

Raynaud's disease is a rare disorder of the blood vessels, usually in the fingers and toes. People with this disorder have attacks that cause the blood vessels to narrow. When .....

Wolff-Parkinson-White syndrome

Wolff-Parkinson-White syndrome, or WPW syndrome, is the presence of an extra, abnormal electrical pathway in the heart that leads to periods of a very fast heartbeat (tachycardia). The extra electrical pathway .....