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May 27, 2012
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Angina Pectoris

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Angina Pectoris Overview

If you are having pain or pressure in the middle of your chest, left neck, left shoulder, or left arm, go immediately to the nearest hospital emergency department. Do not drive yourself. Call 911 for emergency transport.

Angina, or angina pectoris, is the medical term used to describe the temporary chest discomfort that occurs when the heart is not getting enough blood.

  • The heart is a muscle (myocardium) and gets its blood supply from the coronary arteries.

  • Blood carries the oxygen and nutrients the heart muscle needs to keep pumping.

  • When the heart does not get enough blood, it can no longer function at its full capacity.

  • When physical exertion, strong emotions, extreme temperatures, or eating increase the demand on the heart, a person with angina feels temporary pain, pressure, fullness, or squeezing in the center of the chest or in the neck, shoulder, jaw, upper arm, or upper back. This is angina, especially if the discomfort is relieved by removing the stressor and/or taking sublingual (under the tongue) nitroglycerin.

  • The discomfort of angina is temporary, meaning a few seconds or minutes, not lasting hours or all day.

An episode of angina is not a heart attack. Having angina means you have an increased risk of having a heart attack.

  • A heart attack is when the blood supply to part of the heart is cut off and that part of the muscle dies (infarction).

  • Angina can be a helpful warning sign if it makes the patient seek timely medical help and avoid a heart attack.

  • Prolonged or unchecked angina can lead to a heart attack or increase the risk of having a heart rhythm abnormality. Either of those could lead to sudden death.

Time is very important in angina.

  • The more time the heart is deprived of adequate blood flow (ischemia), and thus oxygen, the more the heart muscle is at risk of heart attack or heart rhythm abnormalities.

  • The longer the patient experiences chest pain from angina, the more the heart muscle is at risk of dying or malfunctioning.

Not all chest pain is angina. Pain in the chest can come from a number of causes, which range from not serious to very serious.

  • For example, chest pain can be caused by:

  • If chest pain is severe and/or recurrent, the patient should see a healthcare provider.

  • Go to a hospital emergency department if the patient has any of the following with chest pain:

    • Other symptoms such as:

      • sweating,

      • weakness,

      • faintness,

      • numbness or tingling, or

      • nausea

    • Pain that does not go away after a few minutes

    • Pain that is of concern in any way

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Angina

Heart Attack Overview

If you believe that you are having the symptoms of a heart attack, please call 911 immediately and seek medical attention.

The heart is a muscle like any other in the body. Arteries supply it with oxygen-rich blood so that it can contract and push blood to the rest of the body. When there isn't enough oxygen flow to a muscle, its function begins to suffer. Block the oxygen supply completely, and the muscle starts to die.

  • Heart muscle gets its blood supply from arteries that originate in the aorta just as it leaves the heart.
  • The coronary arteries run along the surface of the heart and supply oxygen-rich blood to the heart muscle.
  • The right coronary artery supplies the right ventricle of the heart and the inferior (lower) portion of the left ventricle.
  • The left anterior descending coronary artery supplies the majority of the left ventricle, while the circumflex artery supplie...

Read the Heart Attack article »


Read What Your Physician is Reading on Medscape

Angina Pectoris »

Angina pectoris is the result of myocardial ischemia caused by an imbalance between myocardial blood supply and oxygen demand.

Read More on Medscape Reference »

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