What's POTS?

What's POTS?

POTS is a form of dysautonomia — a dysfunction of the autonomic nervous system. This branch of the nervous system regulates features we don’t consciously control, reminiscent of heart rate, blood pressure, sweating and body temperature. The key characteristics of POTS are the precise signs and the exaggerated improve in heart rate when standing.

What does POTS stand for?
Postural: associated to the position of your body

Orthostatic: related to standing upright

Tachycardia: elevated heart rate

Syndrome: a group of signs

Why does heart rate improve excessively with POTS?
In most patients with POTS, the construction of the center itself is normal. POTS symptoms come up from a mixture of the next:

Decrease amount of blood within the circulation

Extreme pooling of blood beneath the level of the guts when upright

Elevated levels of certain hormones reminiscent of epinephrine (also known as adrenaline since it is launched by the adrenal glands) and norepinephrine (primarily released by nerves).

Once we stand, gravity pulls more blood into the decrease half of the body. In a healthy individual, to ensure that a adequate quantity of blood reaches the brain, the body prompts several nervous system responses. One such response is releasing hormones that assist tighten blood vessels and cause a modest improve in heart rate. This leads to better blood flow to the center and brain. Once the brain is receiving enough blood and oxygen, these nervous system responses settle back to normal.

In people with POTS, for unclear reasons that will differ from person to person, the blood vessels don’t reply effectively to the signal to tighten. In consequence, the longer you are upright, the more blood swimming pools in the decrease half of your body. This leads to not sufficient blood returning to the brain, which may be felt as lightheadedness (faintness), brain fog and fatigue. As the nervous system continues to launch epinephrine and norepinephrine to tighten the blood vessels, the guts rate will increase further. This may cause shakiness, forceful or skipped heartbeats, and chest pain.

Some people with POTS can develop hypotension (a drop in blood pressure) with prolonged standing (more than three minutes upright). Others can develop a rise in blood pressure (hypertension) when they stand.

Types and Causes of POTS
The causes of POTS differ from particular person to person. Researchers don’t fully understand the origins of this disorder. The classification of POTS is the subject of discussion, but most writerities acknowledge different characteristics in POTS, which occur in some patients more than others. Importantly, these traits are not mutually unique; person with POTS could experience more than of these at the similar time:

Neuropathic POTS is a term used to describe POTS associated with damage to the small fiber nerves (small-fiber neuropathy). These nerves regulate the constriction of the blood vessels in the limbs and abdomen.

Hyperadrenergic POTS is a term used to explain POTS related with elevated levels of the stress hormone norepinephrine.

Hypovolemic POTS is a time period used to explain POTS related with abnormally low levels of blood (hypovolemia).

Secondary POTS signifies that POTS is associated with another condition known to probably cause autonomic neuropathy, akin to diabetes, Lyme disease, or autoimmune issues comparable to lupus or Sjögren’s syndrome.

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Présentation

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