What is the difference between syncope and near syncope?

Asked By: Felina Diepenbruck | Last Updated: 20th April, 2020
Category: medical health heart and cardiovascular diseases
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Presyncope or near-syncope is often ill-defined and may have different meanings to different providers but denotes near fainting or a prodrome of syncope. The most uniform definition is “feeling like one was going to pass out but without actual loss of consciousness.” Near syncope can last for seconds to minutes.

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Also know, what is the difference between syncope and fainting?

Syncope is a temporary loss of consciousness usually related to insufficient blood flow to the brain. It's also called fainting or "passing out." It most often occurs when blood pressure is too low (hypotension) and the heart doesn't pump enough oxygen to the brain.

Also, what is the most common cause of syncope? The type you have depends on what causes the problem. Vasovagal syncope is the most common type of syncope. It is caused by a sudden drop in blood pressure, which causes a drop in blood flow to the brain. When you stand up, gravity causes blood to settle in the lower part of your body, below your diaphragm.

Herein, what is a near syncope?

Near syncope, also called presyncope, is the feeling that you may faint (lose consciousness), but you do not. Each time you have this feeling is called a near syncope episode.

What is Presyncope and syncope?

The medical term for reversible brief loss of consciousness (a simple faint) is syncope. Presyncope describes a feeling of lightheadedness as though one might blackout, but consciousness is preserved. The most common cause of both syncope and presyncope is a sudden fall in blood pressure.

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How long can syncope last?

Syncope is more common than you might think. It can happen at any age, including childhood, though fainting happens more frequently to people as they get older. Syncopal episodes usually last only seconds or minutes. They may be accompanied by temporary feelings of confusion when you regain consciousness.

How do you stop syncope?

How is vasovagal syncope treated?
  1. Avoiding triggers, such as standing for a long time or the sight of blood.
  2. Moderate exercise training.
  3. Discontinuing medicines that lower blood pressure, like diuretics.
  4. Eating a higher salt diet, to help keep up blood volume.
  5. Drinking plenty of fluids, to maintain blood volume.

What drugs can cause syncope?

More commonly, drugs may lead to effects on blood pressure or arrhythmias, leading to syncope. Some of the drug effects include the following: Postural hypotension. In this category are drugs such as antihypertensives, diuretics, nitrates, other arterial vasodilators, l-dopa, phenothiazines, or other tranquilizers.

Does syncope cause brain damage?

Fainting, or syncope, is a sudden and temporary loss of consciousness. This usually occurs due to a lack of oxygen reaching the brain. Many things can cause oxygen deprivation to the brain, including low blood pressure. Fainting is not usually serious.

How is syncope diagnosed?


Tests to determine causes of syncope include:
  1. Laboratory testing: Blood work to check for anemia or metabolic changes.
  2. Electrocardiogram (EKG or ECG): A test that records the electrical activity of your heart.
  3. Exercise stress test: A test that uses an ECG to record your heart's electrical activity while you are active.

Is vasovagal syncope a heart condition?

The most common cause is vasovagal syncope, which is a drop in pressure with a sudden slowing of the heart. The other causes of syncope include heart valve disease, cardiomyopathy and pericarditis, high blood pressure medication and cardiac arrhythmia. Vasovagal syncope is more common in young people and women.

Can syncope be cured?

Treatment should address the underlying cause of syncope. Depending on the diagnosis, cardiovascular syncope may be stopped or controlled with one or more of the following therapies: These treatments may include: Medications to control irregular heart rhythms or underlying disease.

Is syncope a disability?

Fainting, or syncope, can be serious if it continues to occur. As such, it is a condition that can qualify you for disability benefits. If you suffer from syncope to the extent that you have limited ability and cannot work, then you can be eligible for social security disability benefits.

What does near syncope feel like?

The following are symptoms of near-fainting: Feeling lightheaded or like you are going to faint. Weak pulse. Nausea.

What does pre syncope feel like?


Presyncope is the sensation that one is about to pass out. It usually is described as a severe lightheaded feeling, often associated with unsteadiness or falling. The sensation arises because the cerebral cortex is temporarily not receiving adequate oxygen, usually because of diminished blood flow.

Can you die from syncope?

A person with sudden cardiac arrest also loses consciousness suddenly but will die without immediate medical attention. In most cases, syncope is not a sign of a life-threatening problem, although some people with syncope have a serious underlying medical condition.

Can you faint lying down?

When that happens, your body cannot deliver the blood your brain needs, and you lose consciousness. Another kind of fainting can happen when you stand up from sitting or lying down, and your blood pressure drops quickly. This causes dizziness, lightheadedness or a brief loss of consciousness.

What should I do after syncope?

Manage syncope:
  1. Keep a record of your syncope episodes. Include your symptoms and your activity before and after the episode.
  2. Sit or lie down when needed.
  3. Take slow, deep breaths if you start to breathe faster with anxiety or fear.
  4. Check your blood pressure often.

How is vasovagal syncope diagnosed?

Diagnosing vasovagal syncope often involves ruling out other possible causes of your fainting — particularly heart-related problems.

These tests may include:
  1. Electrocardiogram. This test records the electrical signals your heart produces.
  2. Echocardiogram.
  3. Exercise stress test.
  4. Blood tests.

How long do you faint for?


You should return to consciousness after about 20 seconds. Call emergency services and ask for an ambulance if someone faints and doesn't regain consciousness within two minutes.

Is vasovagal syncope hereditary?

Vasovagal Syndrome: More Evidence for a Genetic Basis. Researchers from Australia have reported new evidence suggesting that vasovagal syncope can be inherited in an autosomal dominant manner, and the gene or genes affected appear to be located on chromosome 15. We think this is inherited.

Does vasovagal syncope ever go away?

People who have vasovagal syncope usually regain consciousness after a few seconds, once they have fallen (or, if they're lucky, are helped) to the ground. This is because once on the ground, gravity no longer causes the blood to pool in the legs and the blood pressure improves almost immediately.